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REJ09B0338-0200
8
38K2 Group
User's Manual
RENESAS 8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES
All information contained in these materials, including products and product specifications, represents information on the product at the time of publication and is subject to change by Renesas Technology Corp. without notice. Please review the latest information published by Renesas Technology Corp. through various means, including the Renesas Technology Corp. website (http://www.renesas.com).
Rev. 2.00 Revision date: Oct 15, 2006
www.renesas.com
Notes regarding these materials
1. This document is provided for reference purposes only so that Renesas customers may select the appropriate Renesas products for their use. Renesas neither makes warranties or representations with respect to the accuracy or completeness of the information contained in this document nor grants any license to any intellectual property rights or any other rights of Renesas or any third party with respect to the information in this document. 2. Renesas shall have no liability for damages or infringement of any intellectual property or other rights arising out of the use of any information in this document, including, but not limited to, product data, diagrams, charts, programs, algorithms, and application circuit examples. 3. You should not use the products or the technology described in this document for the purpose of military applications such as the development of weapons of mass destruction or for the purpose of any other military use. When exporting the products or technology described herein, you should follow the applicable export control laws and regulations, and procedures required by such laws and regulations. 4. All information included in this document such as product data, diagrams, charts, programs, algorithms, and application circuit examples, is current as of the date this document is issued. Such information, however, is subject to change without any prior notice. Before purchasing or using any Renesas products listed in this document, please confirm the latest product information with a Renesas sales office. Also, please pay regular and careful attention to additional and different information to be disclosed by Renesas such as that disclosed through our website. (http://www.renesas.com ) 5. Renesas has used reasonable care in compiling the information included in this document, but Renesas assumes no liability whatsoever for any damages incurred as a result of errors or omissions in the information included in this document. 6. When using or otherwise relying on the information in this document, you should evaluate the information in light of the total system before deciding about the applicability of such information to the intended application. Renesas makes no representations, warranties or guaranties regarding the suitability of its products for any particular application and specifically disclaims any liability arising out of the application and use of the information in this document or Renesas products. 7. With the exception of products specified by Renesas as suitable for automobile applications, Renesas products are not designed, manufactured or tested for applications or otherwise in systems the failure or malfunction of which may cause a direct threat to human life or create a risk of human injury or which require especially high quality and reliability such as safety systems, or equipment or systems for transportation and traffic, healthcare, combustion control, aerospace and aeronautics, nuclear power, or undersea communication transmission. If you are considering the use of our products for such purposes, please contact a Renesas sales office beforehand. Renesas shall have no liability for damages arising out of the uses set forth above. 8. Notwithstanding the preceding paragraph, you should not use Renesas products for the purposes listed below: (1) artificial life support devices or systems (2) surgical implantations (3) healthcare intervention (e.g., excision, administration of medication, etc.) (4) any other purposes that pose a direct threat to human life Renesas shall have no liability for damages arising out of the uses set forth in the above and purchasers who elect to use Renesas products in any of the foregoing applications shall indemnify and hold harmless Renesas Technology Corp., its affiliated companies and their officers, directors, and employees against any and all damages arising out of such applications. 9. You should use the products described herein within the range specified by Renesas, especially with respect to the maximum rating, operating supply voltage range, movement power voltage range, heat radiation characteristics, installation and other product characteristics. Renesas shall have no liability for malfunctions or damages arising out of the use of Renesas products beyond such specified ranges. 10. Although Renesas endeavors to improve the quality and reliability of its products, IC products have specific characteristics such as the occurrence of failure at a certain rate and malfunctions under certain use conditions. Please be sure to implement safety measures to guard against the possibility of physical injury, and injury or damage caused by fire in the event of the failure of a Renesas product, such as safety design for hardware and software including but not limited to redundancy, fire control and malfunction prevention, appropriate treatment for aging degradation or any other applicable measures. Among others, since the evaluation of microcomputer software alone is very difficult, please evaluate the safety of the final products or system manufactured by you. 11. In case Renesas products listed in this document are detached from the products to which the Renesas products are attached or affixed, the risk of accident such as swallowing by infants and small children is very high. You should implement safety measures so that Renesas products may not be easily detached from your products. Renesas shall have no liability for damages arising out of such detachment. 12. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior written approval from Renesas. 13. Please contact a Renesas sales office if you have any questions regarding the information contained in this document, Renesas semiconductor products, or if you have any other inquiries.
General Precautions in the Handling of MPU/MCU Products
The following usage notes are applicable to all MPU/MCU products from Renesas. For detailed usage notes on the products covered by this manual, refer to the relevant sections of the manual. If the descriptions under General Precautions in the Handling of MPU/MCU Products and in the body of the manual differ from each other, the description in the body of the manual takes precedence. 1. Handling of Unused Pins Handle unused pins in accord with the directions given under Handling of Unused Pins in the manual. The input pins of CMOS products are generally in the high-impedance state. In operation with an unused pin in the open-circuit state, extra electromagnetic noise is induced in the vicinity of LSI, an associated shoot-through current flows internally, and malfunctions occur due to the false recognition of the pin state as an input signal become possible. Unused pins should be handled as described under Handling of Unused Pins in the manual. 2. Processing at Power-on The state of the product is undefined at the moment when power is supplied. The states of internal circuits in the LSI are indeterminate and the states of register settings and pins are undefined at the moment when power is supplied. In a finished product where the reset signal is applied to the external reset pin, the states of pins are not guaranteed from the moment when power is supplied until the reset process is completed. In a similar way, the states of pins in a product that is reset by an on-chip power-on reset function are not guaranteed from the moment when power is supplied until the power reaches the level at which resetting has been specified. 3. Prohibition of Access to Reserved Addresses Access to reserved addresses is prohibited. The reserved addresses are provided for the possible future expansion of functions. Do not access these addresses; the correct operation of LSI is not guaranteed if they are accessed. 4. Clock Signals After applying a reset, only release the reset line after the operating clock signal has become stable. When switching the clock signal during program execution, wait until the target clock signal has stabilized. When the clock signal is generated with an external resonator (or from an external oscillator) during a reset, ensure that the reset line is only released after full stabilization of the clock signal. Moreover, when switching to a clock signal produced with an external resonator (or by an external oscillator) while program execution is in progress, wait until the target clock signal is stable. 5. Differences between Products Before changing from one product to another, i.e. to one with a different type number, confirm that the change will not lead to problems. The characteristics of MPU/MCU in the same group but having different type numbers may differ because of the differences in internal memory capacity and layout pattern. When changing to products of different type numbers, implement a system-evaluation test for each of the products.
BEFORE USING THIS MANUAL
This user's manual consists of the following three chapters. Refer to the chapter appropriate to your conditions, such as hardware design or software development. Chapter 3 also includes necessary information for systems development. You must refer to that chapter.
1. Organization
q CHAPTER 1 HARDWARE This chapter describes features of the microcomputer and operation of each peripheral function. q CHAPTER 2 APPLICATION This chapter describes usage and application examples of peripheral functions, based mainly on setting examples of relevant registers. q CHAPTER 3 APPENDIX This chapter includes necessary information for systems development using the microcomputer, such as the electrical characteristics, the list of registers.
2. Structure of register
The figure of each register structure describes its functions, contents at reset, and attributes as follows :
(Note 2)
Bits
b7 b6 b5 b4 b3 b2 b1 b0 0
Bit attributes
(Note 1)
Contents immediately after reset release
CPU mode register (CPUM) [Address : 3B 16] B 0 1 2 3 4 5 6 7 Stack page selection bit Name Processor mode bits
b1 b0
Function
0 0 : Single-chip mode 01: 10: Not available 11: 0 : 0 page 1 : 1 page
At reset
RW
0 0 0 0 0 1

Nothing arranged for these bits. These are write disabled bits. When these bits are read out, the contents are "0." Fix this bit to "0." Main clock (XIN-XOUT) stop bit Internal system clock selection bit
0 : Operating 1 : Stopped 0 : XIN-XOUT selected 1 : XCIN-XCOUT selected
: Bit in which nothing is arranged
: Bit that is not used for control of the corresponding function
Note 1:. Contents immediately after reset release 0....... "0" at reset release 1....... "1" at reset release ?....... Undefined at reset release .......Contents determined by option at reset release Note 2: Bit attributes......... The attributes of control register bits are classified into 3 bytes : read-only, writeonly and read and write. In the figure, these attributes are represented as follows : R....... Read ...... Read enabled .......Read disabled W......Write ..... Write enabled ...... Write disabled ......."0" write
3. Supplementation
For details of software, refer to the "740 FAMILY SOFTWARE MANUAL." For details of development support tools, refer to the "Renesas Technology" Homepage (http://www.renesas.com).
Table of contents 38K2 Group
Table of contents
CHAPTER 1 HARDWARE
DESCRIPTION ................................................................................................................................... 2 FEATURES ......................................................................................................................................... 2 PIN CONFIGURATION ..................................................................................................................... 2 FUNCTIONAL BLOCK ..................................................................................................................... 3 PIN DESCRIPTION ........................................................................................................................... 4 PART NUMBERING .......................................................................................................................... 5 GROUP EXPANSION ....................................................................................................................... 6 Memory Type ............................................................................................................................... 6 Memory Size ................................................................................................................................ 6 Packages ...................................................................................................................................... 6 FUNCTIONAL DESCRIPTION ......................................................................................................... 7 Central Processing Unit (CPU) ................................................................................................. 7 Memory ....................................................................................................................................... 11 I/O Ports ..................................................................................................................................... 13 Interrupts .................................................................................................................................... 17 Timers ......................................................................................................................................... 20 Serial Interface .......................................................................................................................... 22 USB Function ............................................................................................................................. 26 HUB Function ............................................................................................................................. 58 External Bus Interface (EXB) .................................................................................................. 70 Multichannel RAM ..................................................................................................................... 89 A/D Converter ............................................................................................................................ 91 Watchdog Timer ........................................................................................................................ 93 Reset Circuit .............................................................................................................................. 94 PLL Circuit (Frequency Synthesizer) ...................................................................................... 95 Clock Generating Circuit .......................................................................................................... 97 Flash Memory Mode ............................................................................................................... 100 NOTES ON PROGRAMMING ...................................................................................................... 126 NOTES ON USAGE ...................................................................................................................... 128 DATA REQUIRED FOR MASK ORDERS ................................................................................. 128 FUNCTIONAL DESCRIPTION SUPPLEMENT .......................................................................... 129
CHAPTER 2 APPLICATION
2.1 I/O port ........................................................................................................................................ 2 2.1.1 Memory map ...................................................................................................................... 2 2.1.2 Related registers ............................................................................................................... 3 2.1.3 Handling of unused pins .................................................................................................. 5 2.1.4 Notes on input and output pins ...................................................................................... 6 2.1.5 Termination of unused pins ............................................................................................. 7 2.2 Interrupt ...................................................................................................................................... 8 2.2.1 Memory map ...................................................................................................................... 8 2.2.2 Related registers ............................................................................................................... 8 2.2.3 Interrupt source ............................................................................................................... 11 2.2.4 Interrupt operation ........................................................................................................... 12 2.2.5 Interrupt control ............................................................................................................... 15 2.2.6 INT interrupt ..................................................................................................................... 18
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Table of contents 38K2 Group
2.2.7 Key input interrupt .......................................................................................................... 19 2.2.8 Notes on interrupts ......................................................................................................... 21 2.3 Timer .......................................................................................................................................... 23 2.3.1 Memory map .................................................................................................................... 23 2.3.2 Related registers ............................................................................................................. 23 2.3.3 Timer application examples ........................................................................................... 28 2.3.4 Notes on timer ................................................................................................................. 39 2.4 Serial I/O ................................................................................................................................... 40 2.4.1 Memory map .................................................................................................................... 40 2.4.2 Related registers ............................................................................................................. 41 2.4.3 Serial I/O connection examples .................................................................................... 45 2.4.4 Setting of serial I/O transfer data format .................................................................... 47 2.4.5 Serial I/O application examples .................................................................................... 48 2.4.6 Notes on serial I/O ......................................................................................................... 66 2.5 USB function ........................................................................................................................... 69 2.6 HUB function ........................................................................................................................... 70 2.7 External bus interface(EXB) ................................................................................................. 71 2.8 A/D converter .......................................................................................................................... 72 2.8.1 Memory map .................................................................................................................... 72 2.8.2 Related registers ............................................................................................................. 72 2.8.3 A/D converter application examples ............................................................................. 75 2.8.4 Notes on A/D converter ................................................................................................. 77 2.9 Watchdog timer ....................................................................................................................... 78 2.9.1 Memory map .................................................................................................................... 78 2.9.2 Related registers ............................................................................................................. 78 2.9.3 Watchdog timer application examples ........................................................................ 80 2.9.4 Notes on watchdog timer ............................................................................................... 81 2.10 Reset ....................................................................................................................................... 82 2.10.1 Connection example of reset IC ................................................................................. 82 ____________ 2.10.2 Notes on RESET pin .................................................................................................... 83 2.11 Frequency synthesizer (PLL) ............................................................................................. 84 2.11.1 Memory map .................................................................................................................. 84 2.11.2 Related registers ........................................................................................................... 84 2.11.3 Functional description ................................................................................................... 86 2.11.4 Notes on PLL ................................................................................................................ 89 2.12 Clock generating circuit ..................................................................................................... 90 2.12.1 Memory map .................................................................................................................. 90 2.12.2 Related registers ........................................................................................................... 90 2.12.3 Oscillation control .......................................................................................................... 92 2.13 Standby function .................................................................................................................. 95 2.13.1 Memory map .................................................................................................................. 95 2.13.2 Related registers ........................................................................................................... 95 2.13.3 Stop mode ...................................................................................................................... 96 2.13.4 Wait mode .................................................................................................................... 100 2.13.5 Notes on stand-by function ........................................................................................ 102 2.14 Flash memory ...................................................................................................................... 103 2.14.1 Overview ....................................................................................................................... 103 2.14.2 Memory map ................................................................................................................ 103 2.14.3 Related registers ......................................................................................................... 104 2.14.4 Parallel I/O mode ........................................................................................................ 105 2.14.5 Standard serial I/O mode ........................................................................................... 105 2.14.6 CPU rewrite mode ...................................................................................................... 106
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Table of contents 38K2 Group
2.14.7 Flash memory mode application examples ............................................................. 107 2.14.8 Notes on CPU rewrite mode ..................................................................................... 112
CHAPTER 3 APPENDIX
3.1 Electrical characteristics ........................................................................................................ 2 3.1.1 Absolute maximum ratings ............................................................................................... 2 3.1.2 Recommended operating conditions (L.Ver) ................................................................. 3 3.1.3 Electrical characteristics (L.Ver) ...................................................................................... 5 3.1.4 A/D converter characteristics (L.Ver) ............................................................................. 7 3.1.5 Timing requirements (L.Ver) ............................................................................................ 8 3.1.6 Switching characteristics (L.Ver) ................................................................................... 11 3.2 Notes on use ........................................................................................................................... 20 3.2.1 Notes on input and output ports ................................................................................... 20 3.2.2 Termination of unused pins ........................................................................................... 21 3.2.3 Notes on interrupts ......................................................................................................... 22 3.2.4 Notes on timer ................................................................................................................. 23 3.2.5 Notes on serial I/O ......................................................................................................... 24 3.2.6 Notes on USB function ................................................................................................... 26 3.2.7 Notes on A/D converter ................................................................................................. 27 3.2.8 Notes on _____________ timer ............................................................................................... 27 watchdog 3.2.9 Notes on RESET pin ...................................................................................................... 27 3.2.10 Notes onPLL .................................................................................................................. 27 3.2.11 Notes on stand-by function .......................................................................................... 28 3.2.12 Notes on CPU rewrite mode ....................................................................................... 28 3.2.13 Notes on programming ................................................................................................. 29 3.2.14 Notes on flash memory version .................................................................................. 31 3.2.15 Electric Characteristic Differences Between Mask ROM and Flash Memory Version MCUs .............................................................................................................................. 31 3.3 Countermeasures against noise ......................................................................................... 32 3.3.1 Shortest wiring length ..................................................................................................... 32 3.3.2 Connection of bypass capacitor across VSS line and VCC line .................................. 34 3.3.3 Wiring to analog input pins ........................................................................................... 35 3.3.4 Oscillator concerns .......................................................................................................... 36 3.3.5 Setup for I/O ports .......................................................................................................... 37 3.3.6 Providing of watchdog timer function by software ..................................................... 38 3.4 List of registers ...................................................................................................................... 39 3.5 Package outline ...................................................................................................................... 83 3.6 Machine instructions ............................................................................................................. 86 3.7 List of instruction code ........................................................................................................ 97 3.8 SFR memory map ................................................................................................................... 98 3.9 Pin configurations .................................................................................................................. 99
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List of figures 38K2 Group
List of figures
CHAPTER 1 HARDWARE
Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. 1 Pin configuration of 38K2 group ........................................................................................ 2 2 Functional block diagram .................................................................................................... 3 3 Part numbering ..................................................................................................................... 5 4 Memory expansion plan ...................................................................................................... 6 5 740 Family CPU register structure .................................................................................... 7 6 Register push and pop at interrupt generation and subroutine call ............................. 8 7 Structure of CPU mode register ...................................................................................... 10 8 Memory map diagram ........................................................................................................ 11 9 Memory map of special function register (SFR) ............................................................ 12 10 Port block diagram (1) .................................................................................................... 14 11 Port block diagram (2) .................................................................................................... 15 12 Structure of port I/O-related registers ........................................................................... 16 13 Interrupt control ................................................................................................................ 18 14 Structure of interrupt-related registers .......................................................................... 18 15 Connection example when using key input interrupt and port P0 block diagram .. 19 16 Structure of timer X mode register ............................................................................... 20 17 Timer block diagram ........................................................................................................ 21 18 Block diagram of clock synchronous serial I/O ........................................................... 22 19 Operation of clock synchronous serial I/O function .................................................... 22 20 Block diagram of UART serial I/O ................................................................................. 23 21 Operation of UART serial I/O function .......................................................................... 23 22 Structure of serial I/O control registers ........................................................................ 25 23 USB function overview .................................................................................................... 26 24 USB Function Control Circuit (USBFCC) block diagram ............................................ 27 25 USB port external circuit (D0+, D0-, USBVREF, TrON) block diagram (4.0V VCC 5.25V) ........................................................................................................................... 28 26 USB port external circuit (D0+, D0-, USBVREF, TrON) block diagram (3.0V VCC 4.0V) ............................................................................................................................. 28 27 Example setting of buffer area beginning address ..................................................... 29 28 Examples of interrupt source dependant buffer area offset address ....................... 29 29 USB device interrupt control .......................................................................................... 31 30 USB related registers ...................................................................................................... 32 31 Structure of USB control register .................................................................................. 33 32 Structure of USB function/HUB enable register .......................................................... 33 33 Structure of USB function address register ................................................................. 34 34 Structure of USB HUB address register ....................................................................... 34 35 Structure of Frame number register Low ..................................................................... 34 36 Structure of Frame number register High .................................................................... 34 37 Structure of USB interrupt source enable register ...................................................... 35 38 Structure of USB interrupt source register ................................................................... 36 39 Structure of Endpoint index register ............................................................................. 37 40 Structure of EP00 stage register ................................................................................... 38 41 Structure of EP00 control register 1 ............................................................................. 38 42 Structure of EP00 control register 2 ............................................................................. 38 43 Structure of EP00 control register 3 ............................................................................. 39
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List of figures 38K2 Group
Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig.
44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
Structure of EP00 interrupt source register ................................................................. 39 Structure of EP00 byte number register ....................................................................... 40 Structure of EP00 buffer area set register ................................................................... 40 Structure of EP01 set register ....................................................................................... 41 Structure of EP01 control register 1 ............................................................................. 41 Structure of EP01 control register 2 ............................................................................. 42 Structure of EP01 control register 3 ............................................................................. 42 Structure of EP01 interrupt source register ................................................................. 42 Structure of EP01 byte number register 0 ................................................................... 43 Structure of EP01 byte number register 1 ................................................................... 43 Structure of EP01 MAX. packet size register .............................................................. 43 Structure of EP01 buffer area set register ................................................................... 44 Structure of EP02 set register ....................................................................................... 45 Structure of EP02 control register 1 ............................................................................. 45 Structure of EP02 control register 2 ............................................................................. 46 Structure of EP02 control register 3 ............................................................................. 46 Structure of EP02 interrupt source register ................................................................. 46 Structure of EP02 byte number register 0 ................................................................... 47 Structure of EP02 byte number register 1 ................................................................... 47 Structure of EP02 MAX. packet size register .............................................................. 47 Structure of EP02 buffer area set register ................................................................... 48 Structure of EP03 set register ....................................................................................... 49 Structure of EP03 control register 1 ............................................................................. 49 Structure of EP03 control register 2 ............................................................................. 50 Structure of EP03 control register 3 ............................................................................. 50 Structure of EP03 interrupt source register ................................................................. 50 Structure of EP03 byte number register 0 ................................................................... 51 Structure of EP03 byte number register 1 ................................................................... 51 Structure of EP03 MAX. packet size register .............................................................. 51 Structure of EP03 buffer area set register ................................................................... 52 Structure of EP10 stage register ................................................................................... 53 Structure of EP10 control register 1 ............................................................................. 53 Structure of EP10 control register 2 ............................................................................. 53 Structure of EP10 control register 3 ............................................................................. 54 Structure of EP10 interrupt source register ................................................................. 54 Structure of EP10 byte number register ....................................................................... 55 Structure of EP10 buffer area set register ................................................................... 55 Structure of EP11 set register ....................................................................................... 56 Structure of EP11 control register 1 ............................................................................. 56 Structure of EP11 control register 2 ............................................................................. 56 Structure of EP11 interrupt source register ................................................................. 57 Structure of EP11 byte number register ....................................................................... 57 Structure of EP11 buffer area set register ................................................................... 57 HUB functions ................................................................................................................... 58 HUB function control circuit block diagram .................................................................. 59 Block diagram of USB down-port peripheral circuits (D1+, D1-) .............................. 60 Block diagram of USB down-port peripheral circuits (D2+, D2-) .............................. 60 USB HUB interrupt control ............................................................................................. 61 HUB related registers ...................................................................................................... 62 Structure of HUB interrupt source enable register ..................................................... 63 Structure of HUB interrupt source register .................................................................. 63 Structure of HUB downstream port index register ...................................................... 64
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List of figures 38K2 Group
Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig.
96 Structure of DP1 interrupt source register ................................................................... 65 97 Structure of DP1 control register ................................................................................... 66 98 Structure of DP1 status register .................................................................................... 66 99 Structure of DP2 interrupt source register ................................................................... 67 100 Structure of DP2 control register ................................................................................. 68 101 Structure of DP2 status register .................................................................................. 68 102 Structure of Downstream port control register .......................................................... 69 103 External bus interface ................................................................................................... 70 104 Data transfer timing of memory channel .................................................................... 70 105 External bus interface (EXB) pin assignment ............................................................ 71 106 Block diagram of external bus interface (EXB) ......................................................... 72 107 EXB related registers (1) .............................................................................................. 76 108 EXB related registers (2) .............................................................................................. 76 109 Structure of EXB interrupt source enable register .................................................... 77 110 Structure of EXB interrupt source register ................................................................. 77 111 Structure of EXB index register ................................................................................... 78 112 Structure of Register window 1 ................................................................................... 78 113 Structure of Register window 2 ................................................................................... 78 114 Index00[low]; Structure of External I/O configuration register ................................. 79 115 Index00[high]; Structure of External I/O configuration register .............................. 79 116 Index01[low]; Structure of Transmit/Receive buffer register .................................... 80 117 Index02[low]; Structure of Memory channel operation mode register .................... 80 118 Index03[low]; Structure of Memory address counter ................................................ 80 119 Index03[high]; Structure of Memory address counter ............................................... 81 120 Index04[low]; Structure of End address register ....................................................... 81 121 Index04[high]; Structure of End address register ...................................................... 81 122 CPU channel receiving operation ................................................................................ 82 123 CPU channel tranmitting operation ............................................................................. 83 124 Memory channel receiving operation (1) .................................................................... 84 125 Memory channel receiving operation (2) .................................................................... 85 126 Memory channel receiving operation (3) .................................................................... 86 127 Memory channel tranmitting operation (1) ................................................................. 87 128 Memory channel tranmitting operation (2) ................................................................. 88 129 Multichannel RAM timing diagram (no wait) .............................................................. 89 130 Multichannel RAM timing diagram (one wait) ............................................................ 89 131 Multichannel RAM operation example ......................................................................... 90 132 Structure of AD control register ................................................................................... 91 133 10-bit A/D mode reading .............................................................................................. 91 134 A/D converter block diagram ........................................................................................ 92 135 Block diagram of Watchdog timer ............................................................................... 93 136 Structure of Watchdog timer control register ............................................................. 93 137 Example of reset circuit ................................................................................................ 94 138 Reset sequence ............................................................................................................. 94 139 Block diagram of PLL circuit ........................................................................................ 95 140 Structure of PLL control register ................................................................................. 96 141 Ceramic resonator or quartz-crystal oscilltor circuit ................................................. 98 142 External clock input circuit ........................................................................................... 98 143 Structure of MISRG ....................................................................................................... 98 144 System clock generating circuit block diagram (single-chip mode) ........................ 98 145 State transitions of clock .............................................................................................. 99 146 Block diagram of built-in flash memory .................................................................... 101 147 Structure of flash memory control register ............................................................... 102
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List of figures 38K2 Group
Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig.
148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169
CPU rewrite mode set/release flowchart .................................................................. 103 Program flowchart ........................................................................................................ 105 Erase flowchart ............................................................................................................ 106 Full status check flowchart and remedial procedure for errors ............................ 108 Structure of ROM code protect control register ...................................................... 109 ID code store addresses ............................................................................................ 110 Pin connection diagram in standard serial I/O mode (1) ....................................... 114 Timing for page read ................................................................................................... 116 Timing for reading status register ............................................................................. 116 Timing for clear status register .................................................................................. 117 Timing for page program ............................................................................................ 117 Timing for erase all blocks ......................................................................................... 118 Timing for download .................................................................................................... 119 Timing for version information output ....................................................................... 120 Timing for Boot ROM area output ............................................................................. 120 Timing for ID check ..................................................................................................... 121 ID code storage addresses ........................................................................................ 121 Full status check flowchart and remedial procedure for errors ............................ 124 Example circuit application for standard serial I/O mode ...................................... 125 Definition of A/D conversion accuracy ...................................................................... 127 A/D conversion equivalent circuit .............................................................................. 130 A/D conversion timing chart ....................................................................................... 130
CHAPTER 2 APPLICATION
Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. 2.1.1 Memory map of registers related to I/O port .............................................................. 2 2.1.2 Structure of Port Pi (i = 0 to 6) .................................................................................... 3 2.1.3 Structure of Port Pi direction register (i = 0 to 6) ..................................................... 3 2.1.4 Structure of Port P0 pull-up control register ............................................................... 4 2.1.5 Structure of Port P5 pull-up control register ............................................................... 4 2.2.1 Memory map of registers related to interrupt ............................................................. 8 2.2.2 Structure of Interrupt request register 1 ...................................................................... 8 2.2.3 Structure of Interrupt request register 2 ...................................................................... 9 2.2.4 Structure of Interrupt control register 1 ....................................................................... 9 2.2.5 Structure of Interrupt control register 2 ..................................................................... 10 2.2.6 Structure of Interrupt edge selection register ........................................................... 10 2.2.7 Interrupt operation diagram .......................................................................................... 12 2.2.8 Changes of stack pointer and program counter upon acceptance of interrupt request ........................................................................................................................................ 13 2.2.9 Time up to execution of interrupt processing routine .............................................. 14 2.2.10 Timing chart after acceptance of interrupt request .............................................. 14 2.2.11 Interrupt control diagram ............................................................................................ 15 2.2.12 Example of multiple interrupts ................................................................................... 17 2.2.13 Connection example and port P0 block diagram when using key input interrupt . ...................................................................................................................................... 19 2.2.14 Registers setting related to key input interrupt (corresponding to Figure 2.2.13) . ...................................................................................................................................... 20 2.2.15 Sequence of changing relevant register .................................................................. 21 2.2.16 Sequence of check of interrupt request bit ............................................................. 22 2.3.1 Memory map of registers related to timers ............................................................... 23 2.3.2 Structure of Prescaler 12, Prescaler X ...................................................................... 23 2.3.3 Structure of Timer 1 ..................................................................................................... 24 2.3.4 Structure of Timer 2, Timer X ..................................................................................... 24
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List of figures 38K2 Group
Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig.
2.3.5 Structure of Timer X mode register ............................................................................ 25 2.3.6 Structure of Interrupt request register 1 .................................................................... 26 2.3.7 Structure of Interrupt request register 2 .................................................................... 26 2.3.8 Structure of Interrupt control register 1 ..................................................................... 27 2.3.9 Structure of Interrupt control register 2 ..................................................................... 27 2.3.10 Timers connection and setting of division ratios .................................................... 29 2.3.11 Related registers setting ............................................................................................ 29 2.3.12 Control procedure ........................................................................................................ 30 2.3.13 Peripheral circuit example .......................................................................................... 31 2.3.14 Timers connection and setting of division ratios .................................................... 31 2.3.15 Related registers setting ............................................................................................ 32 2.3.16 Control procedure ........................................................................................................ 32 2.3.17 Judgment method of valid/invalid of input pulses .................................................. 33 2.3.18 Related registers setting ............................................................................................ 34 2.3.19 Control procedure ........................................................................................................ 35 2.3.20 Timers connection and setting of division ratios .................................................... 36 2.3.21 Related registers setting ............................................................................................ 37 2.3.22 Control procedure ........................................................................................................ 38 2.4.1 Memory map of registers related to Serial I/O ......................................................... 40 2.4.2 Structure of Transmit/Receive buffer register ........................................................... 41 2.4.3 Structure of Serial I/O status register ........................................................................ 41 2.4.4 Structure of Serial I/O control register ....................................................................... 42 2.4.5 Structure of UART control register ............................................................................. 42 2.4.6 Structure of Baud rate generator ................................................................................ 43 2.4.7 Structure of Interrupt edge selection register ........................................................... 43 2.4.8 Structure of Interrupt request register 2 .................................................................... 44 2.4.9 Structure of Interrupt control register 2 ..................................................................... 44 2.4.10 Serial I/O connection examples (1) .......................................................................... 45 2.4.11 Serial I/O connection examples (2) .......................................................................... 46 2.4.12 Serial I/O transfer data format .................................................................................. 47 2.4.13 Connection diagram .................................................................................................... 48 2.4.14 Timing chart ................................................................................................................. 48 2.4.15 Registers setting related to transmitting side ......................................................... 49 2.4.16 Registers setting related to receiving side .............................................................. 50 2.4.17 Control procedure of transmitting side ..................................................................... 51 2.4.18 Control procedure of receiving side ......................................................................... 52 2.4.19 Connection diagram .................................................................................................... 53 2.4.20 Timing chart ................................................................................................................. 53 2.4.21 Registers setting related to Serial I/O ..................................................................... 54 2.4.22 Setting of serial I/O transmission data .................................................................... 54 2.4.23 Control procedure of Serial I/O ................................................................................. 55 2.4.24 Connection diagram .................................................................................................... 56 2.4.25 Timing chart ................................................................................................................. 57 2.4.26 Related registers setting ............................................................................................ 57 2.4.27 Control procedure of master unit .............................................................................. 58 2.4.28 Control procedure of slave unit ................................................................................ 59 2.4.29 Connection diagram (Communication using UART) ............................................... 60 2.4.30 Timing chart (using UART) ........................................................................................ 60 2.4.31 Registers setting related to transmitting side ......................................................... 62 2.4.32 Registers setting related to receiving side .............................................................. 63 2.4.33 Control procedure of transmitting side ..................................................................... 64 2.4.34 Control procedure of receiving side ......................................................................... 65 2.4.35 Sequence of setting serial I/O control register again ............................................ 67
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Rev.2.00 Oct 15, 2006 REJ09B0338-0200
List of figures 38K2 Group
Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig.
2.8.1 Memory map of registers related to A/D converter .................................................. 72 2.8.2 Structure of AD control register .................................................................................. 72 2.8.3 Structure of AD conversion register 1 ....................................................................... 73 2.8.4 Structure of AD conversion register 2 ....................................................................... 73 2.8.5 Structure of Interrupt request register 2 .................................................................... 74 2.8.6 Structure of Interrupt control register 2 ..................................................................... 74 2.8.7 Connection diagram ...................................................................................................... 75 2.8.8 Related registers setting .............................................................................................. 75 2.8.9 Control procedure for 8-bit read ................................................................................. 76 2.8.10 Control procedure for 10-bit read ............................................................................. 76 2.9.1 Memory map of registers related to watchdog timer ............................................... 78 2.9.2 Structure of Watchdog timer control register ............................................................ 78 2.9.3 Structure of CPU mode register ................................................................................. 79 2.9.4 Watchdog timer connection and division ratio setting ............................................. 80 2.9.5 Related registers setting .............................................................................................. 81 2.9.6 Control procedure .......................................................................................................... 81 2.10.1 Example of poweron reset circuit ............................................................................. 82 2.10.2 RAM backup system ................................................................................................... 82 2.11.1 Memory map of registers related to PLL ................................................................. 84 2.11.2 Structure of USB control register ............................................................................. 84 2.11.3 Structure of CPU mode register ............................................................................... 85 2.11.4 Structure of PLL control register .............................................................................. 85 2.11.5 Block diagram for frequency synthesizer circuit ..................................................... 86 2.11.6 Related registers setting when hardware reset ...................................................... 87 2.11.7 Related registers setting when stop mode .............................................................. 88 2.11.8 Related registers setting when recovery from stop mode .................................... 89 2.12.1 Memory map of registers related to clock generating circuit ............................... 90 2.12.2 Structure of USB control register ............................................................................. 90 2.12.3 Structure of CPU mode register ............................................................................... 91 2.12.4 Structure of PLL control register .............................................................................. 91 2.12.5 Related registers setting ............................................................................................ 92 2.12.6 Related registers setting ............................................................................................ 94 2.13.1 Memory map of registers related to standby function ........................................... 95 2.13.2 Structure of MISRG .................................................................................................... 95 2.13.3 Oscillation stabilizing time at restoration by reset input ....................................... 97 2.13.4 Execution sequence example at restoration by occurrence of INT0 interrupt request ...................................................................................................................................... 99 2.13.5 Reset input time ........................................................................................................ 101 2.14.1 Memory map of flash memory version for 38K2 Group ...................................... 103 2.14.2 Memory map of registers related to flash memory .............................................. 104 2.14.3 Structure of Flash memory control register ........................................................... 104 2.14.4 Rewrite example of built-in flash memory in standard serial I/O mode ............ 107 2.14.5 Connection example in standard serial I/O mode (1) .......................................... 108 2.14.6 Connection example in standard serial I/O mode (2) .......................................... 108 2.14.7 Connection example in standard serial I/O mode (3) .......................................... 109 2.14.8 Example of rewrite system for built-in flash memory in CPU rewrite mode .... 110 2.14.9 CPU rewrite mode beginning/release flowchart .................................................... 111
CHAPTER 3 APPENDIX
Fig. 3.1.1 Output switching characteristics measurement circuit ............................................. 11 Fig. 3.1.2 USB output switching characteristics measurement circuit (1) for D0-, D1+/D2+ (low-speed), D1-/D2- (full-speed) ....... 13
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List of figures 38K2 Group
Fig. 3.1.3 SB output switching characteristics measurement circuit (2) for D0+, D1+/D2+ (full-speed), D1-/D2- (low-speed) ...... 13 Fig. 3.1.4 Timing chart (1) ............................................................................................................. 14 Fig. 3.1.5 Timing chart (2) ............................................................................................................. 15 Fig. 3.1.6 Timing chart (3) ............................................................................................................. 16 Fig. 3.1.7 Timing chart (4) ............................................................................................................. 17 Fig. 3.1.8 Timing chart (5) ............................................................................................................. 18 Fig. 3.1.9 Timing chart (6) ............................................................................................................. 19 Fig. 3.2.1 Sequence of changing relevant register .................................................................... 22 Fig. 3.2.2 Sequence of check of interrupt request bit ............................................................... 23 Fig. 3.2.3 Sequence of setting serial I/O control register again .............................................. 25 Fig. 3.2.4 Initialization of processor status register ................................................................... 29 Fig. 3.2.5 Sequence of PLP instruction execution ..................................................................... 29 Fig. 3.2.6 Stack memory contents after PHP instruction execution ........................................ 29 Fig. 3.2.7 Status flag at decimal calculations ............................................................................. 30 Fig. 3.3.1 Selection of packages .................................................................................................. 32 _____________ Fig. 3.3.2 Wiring for the RESET pin ............................................................................................ 32 Fig. 3.3.3 Wiring for clock I/O pins .............................................................................................. 33 Fig. 3.3.4 Wiring for CNVSS pin ..................................................................................................... 33 Fig. 3.3.5 Wiring for the VPP pin of the flash memory version ................................................. 34 Fig. 3.3.6 Bypass capacitor across the VSS line and the VCC line ........................................... 34 Fig. 3.3.7 Analog signal line and a resistor and a capacitor ................................................... 35 Fig. 3.3.8 Wiring for ___________ current signal line ......................................................................... 36 a large Fig. 3.3.9 Wiring of RESET pin .................................................................................................... 36 Fig. 3.3.10 VSS pattern on the underside of an oscillator ......................................................... 37 Fig. 3.3.11 Setup for I/O ports ...................................................................................................... 37 Fig. 3.3.12 Watchdog timer by software ...................................................................................... 38 Fig. 3.4.1 Structure of Port Pi ....................................................................................................... 39 Fig. 3.4.2 Structure of Port Pi direction register ........................................................................ 39 Fig. 3.4.3 Structure of USB control register ................................................................................ 40 Fig. 3.4.4 Structure of USB function/HUB enable register ........................................................ 40 Fig. 3.4.5 Structure of USB function address register ............................................................... 40 Fig. 3.4.6 Structure of USB HUB address register .................................................................... 41 Fig. 3.4.7 Structure of Frame number register Low ................................................................... 41 Fig. 3.4.8 Structure of Frame number register High .................................................................. 41 Fig. 3.4.9 Structure of USB interrupt source enable register ................................................... 41 Fig. 3.4.10 Structure of USB interrupt source register .............................................................. 42 Fig. 3.4.11 Structure of Endpoint index register ......................................................................... 42 Fig. 3.4.12 Structure of EP00 stage register .............................................................................. 43 Fig. 3.4.13 Structure of EP01 set register .................................................................................. 43 Fig. 3.4.14 Structure of EP02 set register .................................................................................. 44 Fig. 3.4.15 Structure of EP03 set register .................................................................................. 44 Fig. 3.4.16 Structure of EP10 stage register .............................................................................. 45 Fig. 3.4.17 Structure of EP11 set register .................................................................................. 45 Fig. 3.4.18 Structure of EP00 control register 1 ........................................................................ 45 Fig. 3.4.19 Structure of EP01 control register 1 ........................................................................ 46 Fig. 3.4.20 Structure of EP02 control register 1 ........................................................................ 46 Fig. 3.4.21 Structure of EP03 control register 1 ........................................................................ 46 Fig. 3.4.22 Structure of EP10 control register 1 ........................................................................ 47 Fig. 3.4.23 Structure of EP11 control register 1 ........................................................................ 47 Fig. 3.4.24 Structure of EP00 control register 2 ........................................................................ 47 Fig. 3.4.25 Structure of EP01 control register 2 ........................................................................ 48 Fig. 3.4.26 Structure of EP02 control register 2 ........................................................................ 48
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List of figures 38K2 Group
Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig.
3.4.27 3.4.28 3.4.29 3.4.30 3.4.31 3.4.32 3.4.33 3.4.34 3.4.35 3.4.36 3.4.37 3.4.38 3.4.39 3.4.40 3.4.41 3.4.42 3.4.43 3.4.44 3.4.45 3.4.46 3.4.47 3.4.48 3.4.49 3.4.50 3.4.51 3.4.52 3.4.53 3.4.54 3.4.55 3.4.56 3.4.57 3.4.58 3.4.59 3.4.60 3.4.61 3.4.62 3.4.63 3.4.64 3.4.65 3.4.66 3.4.67 3.4.68 3.4.69 3.4.70 3.4.71 3.4.72 3.4.73 3.4.74 3.4.75 3.4.76 3.4.77 3.4.78 3.4.79
Structure of EP03 control register 2 ........................................................................ 48 Structure of EP10 control register 2 ........................................................................ 49 Structure of EP11 control register 2 ........................................................................ 49 Structure of EP00 control register 3 ........................................................................ 49 Structure of EP01 control register 3 ........................................................................ 50 Structure of EP02 control register 3 ........................................................................ 50 Structure of EP03 control register 3 ........................................................................ 50 Structure of EP10 control register 3 ........................................................................ 51 Structure of EP00 interrupt source register ............................................................ 51 Structure of EP01 interrupt source register ............................................................ 52 Structure of EP02 interrupt source register ............................................................ 52 Structure of EP03 interrupt source register ............................................................ 53 Structure of EP10 interrupt source register ............................................................ 54 Structure of EP11 interrupt source register ............................................................ 54 Structure of EP00 byte number register .................................................................. 55 Structure of EP01 byte number register 0 .............................................................. 55 Structure of EP02 byte number register 0 .............................................................. 55 Structure of EP03 byte number register 0 .............................................................. 56 Structure of EP10 byte number register .................................................................. 56 Structure of EP11 byte number register 0 .............................................................. 56 Structure of EP01 byte number register 1 .............................................................. 57 Structure of EP02 byte number register 1 .............................................................. 57 Structure of EP03 byte number register 1 .............................................................. 57 Structure of Prescaler12, Prescaler X ..................................................................... 58 Structure of Timer 1 ................................................................................................... 58 Structure of Timer 2, Timer X ................................................................................... 59 Structure of Timer X mode register ......................................................................... 59 Structure of Transmit/Receive buffer register ......................................................... 60 Structure of Serial I/O status register ...................................................................... 60 Structure of HUB interrupt source enable register ................................................. 61 Structure of HUB interrupt source register .............................................................. 61 Structure of HUB downstream port index register ................................................. 61 Structure of DP1 interrupt source register .............................................................. 62 Structure of DP2 interrupt source register .............................................................. 63 Structure of DP1 control register .............................................................................. 64 Structure of DP2 control register .............................................................................. 64 Structure of DP1 status register ............................................................................... 65 Structure of DP2 status register ............................................................................... 65 Structure of EXB interrupt source enable register ................................................. 65 Structure of EXB interrupt source register .............................................................. 66 Structure of EXB index register ................................................................................ 66 Structure of Register window 1 ................................................................................. 67 Index00[low]; Structure of External I/O configuration register ............................ 67 Index01[low]; Structure of Transmit/Receive buffer register ................................. 68 Index02[low]; Structure of Memory channel operation mode register ................. 68 Index03[low]; Structure of Memory address counter .............................................. 68 Index04[low]; Structure of End address register .................................................... 69 Structure of Register window 2 ................................................................................. 69 Index00[high]; Structure of External I/O configuration register ........................... 69 Index03[high]; Structure of Memory address counter ............................................ 70 Index04[high]; Structure of End address register ................................................... 70 Structure of AD control register ................................................................................ 70 Structure of AD conversion register 1 ..................................................................... 71
Rev.2.00 Oct 15, 2006 REJ09B0338-0200
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List of figures 38K2 Group
Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig.
3.4.80 Structure of AD conversion register 2 ..................................................................... 71 3.4.81 Structure of Watchdog timer control register .......................................................... 72 3.4.82 Structure of CPU mode register ............................................................................... 72 3.4.83 Structure of Interrupt request register 1 .................................................................. 73 3.4.84 Structure of Interrupt request register 2 .................................................................. 73 3.4.85 Structure of Interrupt control register 1 ................................................................... 74 3.4.86 Structure of Interrupt control register 2 ................................................................... 74 3.4.87 Structure of Serial I/O control register ..................................................................... 75 3.4.88 Structure of UART control register ........................................................................... 75 3.4.89 Structure of Baud rate generator .............................................................................. 76 3.4.90 Structure of EP01 MAX. packet size register ......................................................... 76 3.4.91 Structure of EP02 MAX. packet size register ......................................................... 76 3.4.92 Structure of EP03 MAX. packet size register ......................................................... 77 3.4.93 Structure of EP00 buffer area set register .............................................................. 77 3.4.94 Structure of EP01 buffer area set register .............................................................. 77 3.4.95 Structure of EP02 buffer area set register .............................................................. 78 3.4.96 Structure of EP03 buffer area set register .............................................................. 78 3.4.97 Structure of EP10 buffer area set register .............................................................. 78 3.4.98 Structure of EP11 buffer area set register .............................................................. 79 3.4.99 Structure of Port P0 pull-up control register ........................................................... 79 3.4.100 Structure of Port P5 pull-up control register ......................................................... 80 3.4.101 Structure of Interrupt edge selection register ....................................................... 80 3.4.102 Structure of PLL control register ............................................................................ 81 3.4.103 Structure of Downstream port control register ...................................................... 81 3.4.104 Structure of MISRG .................................................................................................. 82 3.4.105 Structure of Flash memory control register ........................................................... 82
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List of tables 38K2 Group
List of tables
CHAPTER 1 HARDWARE
Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table 1 Pin description ................................................................................................................... 4 2 List of 38K2 group products (L version) ....................................................................... 6 3 Push and pop instructions of accumulator or processor status register .................. 8 4 Set and clear instructions of each bit of processor status register .......................... 9 5 I/O ports functions .......................................................................................................... 13 6 Interrupt vector addresses and priority ........................................................................ 17 7 USB interrupt sources .................................................................................................... 30 8 HUBinterrupt sources ..................................................................................................... 61 9 Summary of 38K2 group's flash memory version .................................................... 100 10 List of software commands (CPU rewrite mode) ................................................... 105 11 Definition of each bit in status register ................................................................... 107 12 Description of pin function (Standard Serial I/O Mode) ........................................ 113 13 Software commands (Standard serial I/O mode) ................................................... 115 14 Status register (SRD) ................................................................................................. 122 15 Status register 1 (SRD1) ........................................................................................... 123 16 Relative formula for a reference voltage VREF of A/D converter and Vref ...... 129 17 Change of AD conversion register during A/D conversion ................................... 129
CHAPTER 2 APPLICATION
2.1.1 Handling of unused pins ............................................................................................. 5 2.2.1 Interrupt sources, vector addresses and priority of 38K2 group ......................... 11 2.2.2 List of interrupt bits according to interrupt source ................................................ 16 2.3.1 CNTR0 active edge selection bit function ............................................................... 25 2.4.1 Setting examples of Baud rate generator values and transfer bit rate values . 61 2.11.1 PLL operation mode selection bits setting example ........................................... 86 2.11.2 USB clock division ratio selection bits setting example ..................................... 87 2.12.1 Example of internal clock f(f) generation using main clock f(XIN) ..................... 92 2.12.2 Example of internal clock f(f) generation using fSYN ........................................ 93 2.13.1 State in stop mode .................................................................................................. 96 2.13.2 State in wait mode ................................................................................................. 100 2.14.1 Setting of programmers when parallel programming ........................................ 105 2.14.2 Connection example to flash programmer when serial programming (4 wires) .. ................................................................................................................................ 105 Table 2.14.3 Setting condition in serial I/O mode .................................................................. 107 Table Table Table Table Table Table Table Table Table Table Table Table Table
CHAPTER 3 APPENDIX
Table 3.1.1 Absolute maximum ratings .......................................................................................... 2 Table 3.1.2 Recommended operating conditions (Vcc = 3.00 to 5.25 V, Vss = 0 V, Ta = -20 to 85C, unless otherwise noted) ............................................................................ 3 Table 3.1.3 Recommended operating conditions (Vcc = 3.00 to 5.25 V, Vss = 0 V, Ta = -20 to 85C, unless otherwise noted) ............................................................................ 4 Table 3.1.4 Electrical characteristics (1) (Vcc = 3.00 to 5.25 V, Vss = 0 V, Ta = -20 to 85C, unless otherwise noted) ............................................................................................ 5 Table 3.1.5 Electrical characteristics (2) (Vcc = 3.00 to 5.25 V, Vss = 0 V, Ta = -20 to 85C, unless otherwise noted) ............................................................................................ 6
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List of tables 38K2 Group
Table 3.1.6 A/D Converter characteristics (VCC = 3.00 to 5.25 V, VSS = 0 V, Ta = -20 to 85C, unless otherwise noted) ............................................................................................ 7 Table 3.1.7 Timing requirements (1) (VCC = 4.00 to 5.25 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) ......................................................................................................... 8 Table 3.1.8 Timing requirements (2) (VCC = 3.00 to 4.00 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) ......................................................................................................... 8 Table 3.1.9 Timing requirements of external bus interface (EXB) (1) (VCC = 4.00 to 5.25 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) ............................................ 9 Table 3.1.10 Timing requirements of external bus interface (EXB) (2) (VCC = 3.00 to 4.00 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) .......................................... 10 Table 3.1.11 Switching characteristics (1) (VCC = 4.00 to 5.25 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) .......................................................................................... 11 Table 3.1.12 Switching characteristics (2) (VCC = 3.00 to 4.00 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) .......................................................................................... 11 Table 3.1.13 Switching characteristics of external bus interface (EXB) (1) (VCC = 4.00 to 5.25 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) .............................. 12 Table 3.1.14 Switching characteristics of external bus interface (EXB) (2) (VCC = 3.00 to 4.00 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) .............................. 12 Table 3.1.15 Switching characteristics (USB ports) (VCC = 3.00 to 5.25 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) ........................................................................ 13
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THIS PAGE IS BLANK FOR REASONS OF LAYOUT.
CHAPTER 1 HARDWARE
DESCRIPTION FEATURES PIN CONFIGURATION FUNCTIONAL BLOCK PIN DESCRIPTION PART NUMBERING GROUP EXPANSION FUNCTIONAL DESCRIPTION NOTES ON PROGRAMMING NOTES ON USAGE DATA REQUIRED FOR MASK ORDERS FUNCTIONAL DESCRIPTION SUPPLEMENT
HARDWARE 38K2 Group DESCRIPTION/FEATURES/PIN CONFIGURATION
DESCRIPTION
The 38K2 group is the 8-bit microcomputer based on the 740 family core technology. The 38K2 group has the USB function, an 8-bit bus interface, a Serial Interface, three 8-bit timers, and an 8-channel 10-bit A/D converter, which are available for the PC peripheral I/O device. The various microcomputers in the 38K2 group include variations of internal memory size and packaging. For details, refer to the section on part numbering.
* Timers ............................................................................. 8-bit 3 *Watchdog timer ............................................................. 16-bit 1 * Serial Interface * * * *
Serial I/O ...................... 8-bit 1 (UART or Clock-synchronized) A/D converter ................................................ 10-bit 8 channels (8-bit reading available) LED direct drive port ................................................................... 4 Clock generating circuit (connect to external ceramic resonator or quartz-crystal oscillator) Power source voltage (L version) System clock/Internal clock division mode At 12 MHz/2-divide mode( = 6 MHz) ................... 4.00 to 5.25 V At 8 MHz/Through mode ( = 8 MHz) ................... 4.00 to 5.25 V At 6 MHz/Through mode ( = 6 MHz) ................... 3.00 to 5.25 V
FEATURES
* Basic machine-language instructions ....................................... 71 * The minimum instruction execution time .......................... 0.25 s
* * * * * * *
(at 8 MHz system clock) System clock: Reference frequency to internal circuit except USB function Memory size ROM ................................................................ 16 K to 32 K bytes RAM ............................................................... 1024 to 2048 bytes Programmable input/output ports ............................................. 44 Software pull-up resistors Interrupts .................................................. 16 sources, 16 vectors USB function (Full-Speed USB2.0 specification) ...... 4 endpoints USB HUB function (Full-Speed USB2.0 specification) .... 2 down ports External bus interface ....................................... 8-bit 1 channel
* Power dissipation
At 5 V power source voltage .................................. 125 mW (typ.) (at 8 MHz system clock, in through mode) At 3.3 V power source voltage ................................ 30 mW (typ.) (at 6 MHz system clock, in through mode) Operating temperature range .................................... -20 to 85C Packages FP ............................ PLQP0064GA-A (64-pin 14 14 mm LQFP) HP ............................ PLQP0064KB-A (64-pin 10 10 mm LQFP)
* *
PIN CONFIGURATION (TOP VIEW)
P05 P04 P03 P02 P01 P00 P57 P56 P55 P54 P53 P52/INT1 P51/CNTR0 P50/INT0 P27 P26
47 45 44 43 35 34 48 46 41 42
P06 P07 P40/EXDREQ/RXD P41/EXDACK/TXD P42/EXTC/SCLK P43/EXA1/SRDY P30 P31 P32 P33/EXINT P34/EXCS P35/EXWR P36/EXRD P37/EXA0 P10/DQ0/AN0 P11/DQ1/AN1
40
39
38
37
36
33
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
M38K27M4L-XXXFP/HP
M38K29F8LFP/HP
P25 P24 D2+ D2D1+ D1D0D0+ TrON USBVREF DVCC PVCC PVSS P63(LED3) P62(LED2) P61(LED1)
10
11
12
13
P12/DQ2/AN2 P13/DQ3/AN3 P14/DQ4/AN4 P15/DQ5/AN5 P16/DQ6/AN6 P17/DQ7/AN7 CNVSS RESET
VCCE VREF VSS
XIN XOUT
14
15
Package type : PLQP0064GA-A (64P6U-A)/PLQP0064KB-A (64P6Q-A)
Fig. 1 Pin configuration of 38K2 group
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P60(LED0)
VCC CNVSS2
16
2
3
4
5
6
7
8
1
9
38K2 Group
FUNCTIONAL BLOCK DIAGRAM (Package : PLQP0064GA-A/PLQP0064KB-A)
PVSS PVCC XIN XOUT VCCE VSS VCC RESET CNVSS CNVSS2
15 7 8 14 11 9
Rev.2.00 Oct 15, 2006 REJ09B0338-0200
20
21
12
13
Fig. 2 Functional block diagram
Data bus
page 3 of 130
Clock generating circuit
RAM ROM CPU
RAM I/F
Timer 1 (8) Timer 2 (8) Timer X (8)
Watchdog timer
CNTR0
INT1 INT0
SI/O EXTBUS (8)
USB
USB HUB
10-bit A/D converter (8)
P6 (4) P3 (8)
P5 (8)
P4 (4)
P2 (4)
P1 (8)
P0(8)
16 17 18 19 51 52 53 54
35 36 37 38 39 4041 42
55 56 57 58 59 60 61 62
22
23
24
25
26
27
28
29
30
3132 33 34
10
63 64 1 2 3 4 5 6
43 44 45 46 47 4849 50
FUNCTIONAL BLOCK
D0DVCC TrON USBVREF D0+
D1-D1+D2- D2+
VREF
HARDWARE
HARDWARE 38K2 Group PIN DESCRIPTION
PIN DESCRIPTION
Table 1. Pin description Pin VCC, VSS VCCE CNVSS CNVSS2 VREF DVCC PVCC, PVSS RESET XIN XOUT USBVREF Name Power source Analog power source CNVSS CNVSS2 Analog reference voltage input Analog power source Reset input Clock input Clock output USB reference power source Function Function except a port function * Apply voltage of 3.0 V - 5.25 V (L version) to VCC, and 0 V to VSS. * Power source pin for ports P1, P3, P4 and analog circuit. Connect this pin to VCC. * This pin controls the operation mode of the chip. Connect this pin to VSS. In the flash memory mode, this pin becoems VPP power source input pin. * This pin controls the operation mode of the chip. Connect this pin to VSS. * Reference voltage input pin for A/D converter. * Power source pin for analog circuit. * Connect the DVCC and PVCC pins to VCC, and the PVSS pin to VSS. * Reset input pin for active "L" * Input and output pins for the main clock generating circuit. * Connect a ceramic resonator or a quartz-crystal oscillator between the XIN and XOUT pins to set the oscillation frequency. *If an external clock is used, connect the clock source to the XIN pin and leave the XOUT pin open. * Power source pin for USB port circuit. In Vcc = 4.00 to 5.25 V use the built-in USB reference voltage circuit. In Vcc = 3.60 to 4.00 V apply 3.3 V power supply from the external because use of the built-in USB reference voltage circuit is prohibited in this voltage range. In Vcc = 3.00 to 3.60 V connect this pin to VCC because use of the built-in USB reference voltage circuit is prohibited in this voltage range. * Output pin to pull-up D0+ by 1.5 k external resistor. * USB upstream I/O port * USB input level * USB output level output structure * USB downstream I/O port * USB input level * USB output level output structure * Key input pins (key-on wake up interrupt) * 8-bit I/O port * I/O direction register allows each pin to be individually programmed as either input or output. * CMOS compatible input level * CMOS 3-state output structure * Pull-up control is enabled. * A/D converter input pins * 8-bit I/O port * External bus interface function pins * I/O direction register allows each pin to be individually programmed as either input or output. * CMOS compatible input level * CMOS 3-state output structure * 4-bit I/O port * I/O direction register allows each pin to be individually programmed as either input or output. * CMOS compatible input level * CMOS 3-state output structure * 8-bit I/O port * I/O direction register allows each pin to be individually * External bus interface function pins programmed as either input or output. * CMOS compatible input level * CMOS 3-state output structure * Serial I/O function pins * 4-bit I/O port * External bus interface function pins * I/O direction register allows each pin to be individually programmed as either input or output. * CMOS compatible input level * CMOS 3-state output structure * Interrupt input pin * 8-bit I/O port * I/O direction register allows each pin to be individually * Timer X funciton pin programmed as either input or output. * Interrupt input pin * CMOS compatible input level * CMOS 3-state output structure * 4-bit I/O port; * I/O direction register allows each pin to be individually programmed as either input or output.; * CMOS compatible input level* CMOS 3-state output structure; * Output large current for LED drive is enabled.
TrON D0+, D0-
USB reference voltage output USB upstream I/O USB downstream I/O I/O port P0
D1+, D1-, D2+, D2P00-P07
P10/DQ0/AN0- I/O port P1 P17/DQ7/AN7
P24-P27
I/O port P2
P30-P32 I/O port P3 P33/ExINT P34/ExCS P35/ExWR P36/ExRD P37/ExA0 P40/ExDREQ/RxD I/O port P4 P41/ExDACK/TxD P42/ExTC/SCLK P43/ExA1/SRDY P50/INT0 P51/CNTR0 P52/INT1 P53-P57 P60-P63 I/O port P5
I/O port P6
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HARDWARE 38K2 Group PART NUMBERING
PART NUMBERING
Product M38K2 7 M 4 L - XXX FP Package type FP : PLQP0064GA-A package HP : PLQP0064KB-A package ROM number Omitted in the flash memory version. Omitted in the flash memory version. L : L version ROM/PROM size 1 : 4096 bytes 2 : 8192 bytes 3 : 12288 bytes 4 : 16384 bytes 5 : 20480 bytes 6 : 24576 bytes 7 : 28672 bytes 8 : 32768 bytes
9 : 36864 bytes A : 40960 bytes B : 45056 bytes C : 49152 bytes D : 53248 bytes E : 57344 bytes F : 61440 bytes
The first 128 bytes and the last 2 bytes of ROM are reserved areas ; they cannot be used as a user's ROM area. However, they can be programmed or erased in the flash memory version, so that users can use them. Memory type M : Mask ROM version F : Flash memory version RAM size 0 : 192 bytes 1 : 256 bytes 2 : 384 bytes 3 : 512 bytes 4 : 640 bytes 5 : 768 bytes 6 : 896 bytes 7 : 1024 bytes 8 : 1536 bytes 9 : 2048 bytes
Fig. 3 Part numbering
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HARDWARE 38K2 Group GROUP EXPANSION
GROUP EXPANSION
Mitsubishi plans to expand the 38K2 group as follows.
Packages
PLQP0064GA-A ...................... 0.8 mm-pitch plastic molded LQFP PLQP0064KB-A ....................... 0.5 mm-pitch plastic molded LQFP 100D0M ........................... 0.65 mm-pitch metal seal PIGGY BACK
Memory Type
Support for mask ROM and flash memory versions.
Memory Size
Flash memory size .......................................................... 32 Kbytes Mask ROM size ............................................................... 16 Kbytes RAM size .......................................................... 1024 to 2048 bytes
Memory Expansion Plan
ROM size (bytes) : Mass Production 60K
32K
M38K29F8L
16K
M38K27M4L
8K
256
512
1,024 RAM size (bytes)
2,048
Fig. 4 Memory expansion plan Currently products are listed below. Table 2. List of 38K2 group products (L version) Product M38K27M4L-XXXFP M38K27M4L-XXXHP M38K29F8LFP M38K29F8LHP M38K29RFS ROM size (bytes) ROM size for User in ( ) 16384 (16254) 32768 (32638) -- RAM size (bytes) 1024 2048 2048 Package PLQP0064GA-A PLQP0064KB-A PLQP0064GA-A PLQP0064KB-A 100D0M As of October 2006 Remarks Mask ROM version Flash memory version
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTION CENTRAL PROCESSING UNIT (CPU)
The 38K2 group uses the standard 740 family instruction set. Refer to the table of 740 family addressing modes and machine instructions or the 740 Family Software Manual for details on the instruction set. Machine-resident 740 family instructions are as follows: The FST and SLW instruction cannot be used. The STP, WIT, MUL, and DIV instruction can be used. The CPU has the 6 registers. The register structure is shown in Figure 5.
[Stack Pointer (S)]
The stack pointer is an 8-bit register used during subroutine calls and interrupts. This register indicates start address of stored area (stack) for storing registers during subroutine calls and interrupts. The low-order 8 bits of the stack address are determined by the contents of the stack pointer. The high-order 8 bits of the stack address are determined by the stack page selection bit. If the stack page selection bit is "0" , the high-order 8 bits becomes "0016". If the stack page selection bit is "1", the high-order 8 bits becomes "0116". Figure 6 shows the store and the return movement into the stack. If there are registers other than those described in Figure 5, the users need to store them with the program.
[Accumulator (A)]
The accumulator is an 8-bit register. Data operations such as data transfer, etc., are executed mainly through the accumulator.
[Program Counter (PC)]
The program counter is a 16-bit counter consisting of two 8-bit registers PCH and PCL. It is used to indicate the address of the next instruction to be executed.
[Index Register X (X)]
The index register X is an 8-bit register. In the index addressing modes, the value of the OPERAND is added to the contents of register X and specifies the real address.
[Index Register Y (Y)]
The index register Y is an 8-bit register. In partial instruction, the value of the OPERAND is added to the contents of register Y and specifies the real address.
b7 A b7 X b7 Y b7 S b15 PCH b7 b7 PCL
b0 Accumulator b0 Index register X b0 Index register Y b0 Stack pointer b0 Program counter b0 Processor status register (PS) Carry flag Zero flag Interrupt disable flag Decimal mode flag Break flag Index X mode flag Overflow flag Negative flag
NVTBD I ZC
Fig. 5 740 Family CPU register structure
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
On-going Routine
Interrupt request (Note) Execute JSR M (S) Push return address on stack (S) M (S) (S) (PCH) (S) - 1 (PCL) (S)- 1
M (S) (S) M (S) (S) M (S) (S)
(PCH) (S) - 1 (PCL) (S) - 1 (PS) (S) - 1 Push contents of processor status register on stack Push return address on stack
Subroutine Execute RTS POP return address from stack (S) (PCL) (S) (PCH) (S) + 1 M (S) (S) + 1 M (S)
Interrupt Service Routine
Execute RTI (S) (PS) (S) (PCL) (S) (PCH) (S) + 1 M (S) (S) + 1 M (S) (S) + 1 M (S)
I Flag is set from "0" to "1" Fetch the jump vector POP contents of processor status register from stack
POP return address from stack
Note: Condition for acceptance of an interrupt
Interrupt enable flag is "1" Interrupt disable flag is "0"
Fig. 6 Register push and pop at interrupt generation and subroutine call Table 3 Push and pop instructions of accumulator or processor status register Push instruction to stack Accumulator Processor status register PHA PHP Pop instruction from stack PLA PLP
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
[Processor status register (PS)]
The processor status register is an 8-bit register consisting of 5 flags which indicate the status of the processor after an arithmetic operation and 3 flags which decide MCU operation. Branch operations can be performed by testing the Carry (C) flag , Zero (Z) flag, Overflow (V) flag, or the Negative (N) flag. In decimal mode, the Z, V, N flags are not valid. *Bit 0: Carry flag (C) The C flag contains a carry or borrow generated by the arithmetic logic unit (ALU) immediately after an arithmetic operation. It can also be changed by a shift or rotate instruction. *Bit 1: Zero flag (Z) The Z flag is set if the result of an immediate arithmetic operation or a data transfer is "0", and cleared if the result is anything other than "0". *Bit 2: Interrupt disable flag (I) The I flag disables all interrupts except for the interrupt generated by the BRK instruction. Interrupts are disabled when the I flag is "1". *Bit 3: Decimal mode flag (D) The D flag determines whether additions and subtractions are executed in binary or decimal. Binary arithmetic is executed when this flag is "0"; decimal arithmetic is executed when it is "1". Decimal correction is automatic in decimal mode. Only the ADC and SBC instructions can execute decimal arithmetic.
*Bit 4: Break flag (B) The B flag is used to indicate that the current interrupt was generated by the BRK instruction. The BRK flag in the processor status register is always "0". When the BRK instruction is used to generate an interrupt, the processor status register is pushed onto the stack with the break flag set to "1". *Bit 5: Index X mode flag (T) When the T flag is "0", arithmetic operations are performed between accumulator and memory. When the T flag is "1", direct arithmetic operations and direct data transfers are enabled between memory locations. *Bit 6: Overflow flag (V) The V flag is used during the addition or subtraction of one byte of signed data. It is set if the result exceeds +127 to -128. When the BIT instruction is executed, bit 6 of the memory location operated on by the BIT instruction is stored in the overflow flag. *Bit 7: Negative flag (N) The N flag is set if the result of an arithmetic operation or data transfer is negative. When the BIT instruction is executed, bit 7 of the memory location operated on by the BIT instruction is stored in the negative flag.
Table 4 Set and clear instructions of each bit of processor status register C flag Set instruction Clear instruction SEC CLC Z flag - - I flag SEI CLI D flag SED CLD B flag - - T flag SET CLT V flag - CLV N flag - -
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
[CPU Mode Register (CPUM)] 003B16
The CPU mode register contains the stack page selection bit and the internal system clock selection bit. The CPU mode register is allocated at address 003B16.
b7
b0
0
1
CPU mode register (CPUM : address 003B16) Processor mode bits b1 b0 0 0 : Single-chip mode 0 1: 1 0: Not available 1 1: Stack page selection bit 0 : 0 page 1 : 1 page Not used (returns "1" when read) (Do not write "0" to this bit) Not used (returns "0" when read) (Do not write "1" to this bit) System clock selection bit 0 : Main clock (XIN) 1 : fSYN System clock division ratio selection bits b7 b6 0 0 : = f(system clock)/8 (8-divide mode) 0 1 : = f(system clock)/4 (4-divide mode) 1 0 : = f(system clock)/2 (2-divide mode) 1 1 : = f(system clock) (Through mode)
Fig. 7 Structure of CPU mode register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
MEMORY Special Function Register (SFR) Area
The Special Function Register area in the zero page contains control registers such as I/O ports and timers.
Interrupt Vector Area
The interrupt vector area contains reset and interrupt vectors.
Zero Page
The 256 bytes from addresses 000016 to 00FF16 are called the zero page area. The internal RAM and the special function registers (SFR) are allocated to this area. The zero page addressing mode can be used to specify memory and register addresses in the zero page area. Access to this area with only 2 bytes is possible in the zero page addressing mode.
RAM
RAM is used for data storage and for stack area of subroutine calls and interrupts.
ROM
The first 128 bytes and the last 2 bytes of ROM are reserved for device testing and the rest is user area for storing programs. In the flash memory version, program and erase can be performed in the reserved area.
Special Page
The 256 bytes from addresses FF0016 to FFFF16 are called the special page area. The special page addressing mode can be used to specify memory addresses in the special page area. Access to this area with only 2 bytes is possible in the special page addressing mode.
RAM area RAM size (bytes) 192 256 384 512 640 768 896 1024 1536 2048 ROM area ROM size (bytes) 4096 8192 12288 16384 20480 24576 28672 32768 36864 40960 45056 49152 53248 57344 61440 Address YYYY16 F00016 E00016 D00016 C00016 B00016 A00016 900016 800016 700016 600016 500016 400016 300016 200016 100016 Address ZZZZ16 F08016 E08016 D08016 C08016 B08016 A08016 908016 808016 708016 608016 508016 408016 308016 208016 108016 FFFE16 Reserved ROM area FFFF16 Interrupt vector area Special page ROM FF0016 FFDC16 ZZZZ16 YYYY16 Reserved ROM area (128 bytes) Address XXXX16 00FF16 013F16 01BF16 023F16 02BF16 033F16 03BF16 043F16 063F16 083F16 0FE016 0FFF16 SFR area Not used XXXX16 RAM 010016 000016 SFR area 004016 Zero page
Fig. 8 Memory map diagram
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
000016 Port P0 (P0) 000116 Port P0 direction register (P0D) 000216 Port P1 (P1) 000316 Port P1 direction register (P1D) 000416 Port P2 (P2) 000516 Port P2 direction register (P2D) 000616 Port P3 (P3) 000716 Port P3 direction register (P3D) 000816 Port P4 (P4) 000916 Port P4 direction register (P4D) 000A16 Port P5 (P5) 000B16 Port P5 direction register (P5D) 000C16 Port P6 (P6) 000D16 Port P6 direction register (P6D) 000E16 Reserved (Note) 000F16 Reserved (Note) 001016 USB control register (USBCON) 001116 USB function/Hub enable register (USBAE) 001216 USB function address register (USBA0) 001316 USB HUB address register (USBA1) 001416 Frame number register Low (FNUML) 001516 Frame number register High (FNUMH) 001616 USB interrupt source enable register (USBICON) 001716 USB interrupt source register (USBIREQ) 001816 Endpoint index register (USBINDEX) 001916 Endpoint field register 1 (EPXXREG1) 001A16 Endpoint field register 2 (EPXXREG2) 001B16 Endpoint field register 3 (EPXXREG3) 001C16 Endpoint field register 4 (EPXXREG4) 001D16 Endpoint field register 5 (EPXXREG5) 001E16 Endpoint field register 6 (EPXXREG6) 001F16 Endpoint field register 7 (EPXXREG7)
002016 Prescaler 12 (PRE12) 002116 Timer 1 (T1) 002216 Timer 2 (T2) 002316 Timer X mode register (TM) 002416 Prescaler X (PREX) 002516 Timer X (TX) 002616 Transmit/Receive buffer register (TB/RB) 002716 Serial I/O status register (SIOSTS) 002816 HUB interrupt source enable register (HUBICON) 002916 HUB interrupt source register (HUBIREQ) 002A16 HUB down stream port index register (HUBINDEX) 002B16 HUB port field register 1 (DPXREG1) 002C16 HUB port field register 2 (DPXREG2) 002D16 HUB port field register 3 (DPXREG3) 002E16 Reserved (Note) 002F16 Reserved (Note) 003016 EXB interrupt source enable register (EXBICON) 003116 EXB interrupt source register (EXBIREQ) 003216 Reserved (Note) 003316 EXB index register (EXBINDEX) 003416 Register window 1 (EXBREG1) 003516 Register window 2 (EXBREG2) 003616 AD control register (ADCON) 003716 AD conversion register 1 (AD1) 003816 AD conversion register 2 (AD2) 003916 Watchdog timer control register (WDTCON) 003A16 Reserved (Note) 003B16 CPU mode register (CPUM) 003C16 Interrupt request register 1(IREQ1) 003D16 Interrupt request register 2(IREQ2) 003E16 Interrupt control register 1(ICON1) 003F16 Interrupt control register 2(ICON2)
0FE016 Serial I/O control register (SIOCON) 0FE116 UART control register (UARTCON) 0FE216 Baud rate generator (BRG) 0FE316 Reserved (Note) 0FE416 Reserved (Note) 0FE516 Reserved (Note) 0FE616 Reserved (Note) 0FE716 Reserved (Note) 0FE816 Reserved (Note) 0FE916 Reserved (Note) 0FEA16 Reserved (Note) 0FEB16 Reserved (Note) 0FEC16 Endpoint field register 8 (EPXXREG8) 0FED16 Endpoint field register 9 (EPXXREG9) 0FEE16 Reserved (Note) 0FEF16 Reserved (Note)
0FF016 Port P0 pull-up control register (PULL0) 0FF116 Reserved (Note) 0FF216 Port P5 pull-up control register (PULL5) 0FF316 Interrupt edge selection register (INTEDGE) 0FF416 Reserved (Note) 0FF516 Reserved (Note) 0FF616 Reserved (Note) 0FF716 Reserved (Note) 0FF816 PLL control register (PLLCON) 0FF916 Downstream port control register (DPCTL) 0FFA16 Reserved (Note) 0FFB16 MISRG 0FFC16 Reserved (Note) 0FFD16 Reserved (Note) 0FFE16 Flash memory control register (FMCR) 0FFF16 Reserved (Note)
Note: Do not write any data to these addresses, because these areas are reserved.
Fig. 9 Memory map of special function register (SFR)
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
I/O PORTS
The I/O ports have direction registers which determine the input/ output direction of each individual pin. Each bit in a direction register corresponds to one pin, and each pin can be set to be input port or output port. When "0" is written to the bit corresponding to a pin, that pin becomes an input pin. When "1" is written to that bit, that pin becomes an output pin. If data is read from a pin set to output, the value of the port output latch is read, not the value of the pin itself. Pins set to input are floating. If a pin set to input is written to, only the port output latch is written to and the pin remains floating. Table 5 I/O ports functions Pin P00-P07 Name Port P0 Input/Output Input/output, individual bits I/O Format CMOS compatible input level CMOS 3-state output CMOS compatible input level CMOS 3-state output (Power source is VCCE) CMOS compatible input level CMOS 3-state output CMOS compatible input level CMOS 3-state output (Power source is VccE) Non-Port Function Key-on wake up Related SFRs Port P0 pull-up control register AD control register EXB control register Diagram No. (1)
P10-P17
Port P1
A/D conversion input External bus interface funciton I/O
(2)
P24-P27
Port P2
(3)
P30-P32 P33/ExINT P34/ExCS P35/ExWR P36/ExRD P37/ExA0 P40/RxD/ ExDREQ P41/TxD/ ExDACK P42/SCLK/ ExTC P43/SRDY/ ExA1 P50/INT0 P52/INT1
Port P3
External bus interface funciton output External bus interface funciton input
EXB control register EXB control register
(4) (5) (6)
Port P4
Port P5
CMOS compatible input level CMOS 3-state output
Serial I/O input External bus interface funciton output Serial I/O output External bus interface funciton input Serial I/O I/O External bus interface funciton input Serial I/O output External bus interface funciton input External interrupt input
P51/CNTR0 P53-P57 P60-P63
Timer X function I/O Port P6
Serial I/O control register EXB control register Serial I/O control register EXB control register Serial I/O control register EXB control register Serial I/O control register EXB control register Port P5 pull-up control register Interrupt edge selection register Timer X mode register
(7)
(8)
(9)
(10)
(11)
(12) (13) (14)
Note: Make sure that the input level at each pin is either 0 V or VCC during execution of the STP instruction. When an input level is at an intermediate potential, a current will flow from VCC to VSS through the input-stage gate.
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(1) Port P0
Pull-up control bit
(4) Ports P30-P32
VCCE
Direction register
Direction register
Data bus
Port latch
Data bus
Port latch
Key-on wake-up input
(2) Port P1
EXOE External bus interface enable bit
Direction register
(5) Port P33
VCCE External bus interface enable bit
Direction register
VCCE
Data bus Data bus Port latch
Port latch
EXINT output EXB data output EXB data input Output buffer Input buffer
(6) Ports P34, P35, P36, P37
VCCE External bus interface enable bit A/D conversion input Analog input pin selection bit Data bus
Direction register
Port latch
(3) Port P2
Direction register
Data bus
Port latch
EXCS(P34) EXWR(P35) EXRD(P36) EXA0(P37)
External bus interface enable bit
Fig. 10 Port block diagram (1)
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(7) Port P40
Serial I/O enable bit Receive enable bit External bus interface enable bit
Direction register
(11) Ports P50, P52
Pull-up control bit VCCE
Direction register
Data bus
Port latch
Data bus
Port latch
INT0 (P50), INT1 (P52) interrupt input EXDreq output Serial I/O input
(8) Port P41
Serial I/O enable bit Receive enable bit External bus interface enable bit
Direction register
(12) Port P51
VCCE
Direction register
Data bus
Port latch
Data bus
Port latch
Pulse output mode Timer output Serial I/O output EXDack External bus interface enable bit CNTR0 interrupt input
(9) Port P42
Serial I/O enable bit Serial I/O mode selection bit Serial I/O synchronous clock selection bit Serial I/O enable bit External bus interface enable bit
Direction register
(13) Ports P53-P57
VCCE
Direction register
Data bus
Port latch
Data bus
Port latch
Serial I/O clock output Serial I/O external clock input
(14) Port P6
EXTC
Serial I/O synchronous clock selection bit External bus interface enable bit
Data bus
Direction register
(10) Port P43
Serial I/O mode selection bit Serial I/O enable bit SRDY output enable bit External bus interface enable bit
Direction register
Port latch
VCCE
Data bus
Port latch
Serial I/O output EXA1 External bus interface enable bit
Fig. 11 Port block diagram (2)
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
Port P0 pull-up control register (PULL0 : address 0FF016) P00 pull-up control bit 0 : No pull-up 1 : Pull-up P01 pull-up control bit 0 : No pull-up 1 : Pull-up P02 pull-up control bit 0 : No pull-up 1 : Pull-up P03 pull-up control bit 0 : No pull-up 1 : Pull-up P04 pull-up control bit 0 : No pull-up 1 : Pull-up P05 pull-up control bit 0 : No pull-up 1 : Pull-up P06 pull-up control bit 0 : No pull-up 1 : Pull-up P07 pull-up control bit 0 : No pull-up 1 : Pull-up
b7
b0 Port P5 pull-up control register (PULL5 : address 0FF216) P50 pull-up control bit 0 : No pull-up 1 : Pull-up Nothing is arranged for this bit. This is a write disabled bit. When this bit is read out, the contents are "0". P52 pull-up control bit 0 : No pull-up 1 : Pull-up Nothing is arranged for these bits. These are write disabled bits. When these bits are read out, the contents are "0".
Fig. 12 Structure of port I/O-related registers
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
INTERRUPTS
Interrupts occur by sixteen sources: four external, eleven internal, and one software.
Interrupt Control
Each interrupt is controlled by an interrupt request bit, an interrupt enable bit, and the interrupt disable flag except for the software interrupt set by the BRK instruction. An interrupt occurs if the corresponding interrupt request and enable bits are "1" and the interrupt disable flag is "0". Interrupt enable bits can be set or cleared by software. Interrupt request bits can be cleared by software, but cannot be set by software. The BRK instruction cannot be disabled with any flag or bit. The I flag disables all interrupts except the BRK instruction interrupt. When several interrupts occur at the same time, the interrupts are received according to priority.
sNotes on interrupts When setting the followings, the interrupt request bit may be set to "1". *When switching external interrupt active edge Related register: Interrupt edge selection register (address 0FF316), Timer X mode register (address 002316) When not requiring for the interrupt occurrence synchronized with these setting, take the following sequence. Set the corresponding interrupt enable bit to "0" (disabled). Set the interrupt edge select bit (active edge switch bit). Set the corresponding interrupt request bit to "0" after 1 or more instructions have been executed. Set the corresponding interrupt enable bit to "1" (enabled).
Interrupt Operation
By acceptance of an interrupt, the following operations are automatically performed: 1. The contents of the program counter and the processor status register are automatically pushed onto the stack. 2. The interrupt disable flag is set and the corresponding interrupt request bit is cleared. 3. The interrupt jump destination address is read from the vector table into the program counter. Table 6 Interrupt vector addresses and priority Interrupt Source Reset (Note 2) USB bus reset USB SOF USB device External bus INT0 Timer X Timer 1 Timer 2 INT1 USB HUB Serial I/O reception Serial I/O transmission CNTR0 Key-on wake up A/D conversion BRK instruction Priority 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Vector Addresses (Note 1) High Low FFFD16 FFFC16 FFFB16 FFF916 FFF716 FFF516 FFF316 FFF116 FFEF16 FFED16 FFEB16 FFE916 FFE716 FFE516 FFE316 FFE116 FFDF16 FFDD16 FFFA16 FFF816 FFF616 FFF416 FFF216 FFF016 FFEE16 FFEC16 FFEA16 FFE816 FFE616 FFE416 FFE216 FFE016 FFDE16 FFDC16 Interrupt Request Generating Conditions At reset At detection of USB bus reset signal (2.5 s interval SE0) At detection of USB SOF signal At detection of resume signal (K state or SE0) or suspend signal (3 ms interval bus idle), or at completion of transaction At completion of reception or transmission or at completion of DMA transmission At detection of either rising or falling edge of INT0 input At timer X underflow At timer 1 underflow At timer 2 underflow At detection of either rising or falling edge of INT1 input At detection of USB HUB downport's state switch At completion of serial I/O data reception At completion of serial I/O data transmission At detection of either rising or falling edge of CNTR0 input At falling of conjunction of input level for port P0 (at input mode) At completion of A/D conversion At BRK instruction execution
Notes 1: Vector addresses contain interrupt jump destination addresses. 2: Reset function in the same way as an interrupt with the highest priority.
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Interrupt request bit Interrupt enable bit
Interrupt disable flag (I)
BRK instruction Reset
Interrupt request
Fig. 13 Interrupt control
b7
b0
Interrupt edge selection register (INTEDGE : address 0FF316) INT0 interrupt edge selection bit Not used (return "0" when read) INT1 interrupt edge selection bit Not used (return "0" when read) 0 : Falling edge active 1 : Rising edge active b7 b0
b7
b0
Interrupt request register 1 (IREQ1 : address 003C16) USB bus reset interrupt request bit USB SOF interrupt request bit USB device interrupt request bit EXB interrupt request bit INT0 interrupt request bit Timer X interrupt request bit Timer 1 interrupt request bit Timer 2 interrupt request bit
Interrupt request register 2 (IREQ2 : address 003D16) INT1 interrupt request bit USB HUB interrupt request bit Serial I/O receive interrupt request bit Serial I/O transmit interrupt request bit CNTR0 interrupt request bit Key-on wake-up interrupt request bit A/D conversion interrupt request bit Nothing is arranged for this bit. This is a write disabled bit. When this bit is read out, the contents are "0".
"0" can be set by software, but "1" cannot be set.
0 : No interrupt request issued 1 : Interrupt request issued
b7
b0
Interrupt control register 1 (ICON1 : address 003E16) USB bus reset interrupt enable bit USB SOF interrupt enable bit USB device interrupt enable bit EXB interrupt enable bit INT0 interrupt enable bit Timer X interrupt enable bit Timer 1 interrupt enable bit Timer 2 interrupt enable bit
b7
b0
Interrupt control register 2 (ICON2 : address 003F16) INT1 interrupt enable bit USB HUB interrupt enable bit Serial I/O receive interrupt enable bit Serial I/O transmit interrupt enable bit CNTR0 interrupt enable bit Key-on wake-up interrupt enable bit A/D conversion interrupt enable bit Fix this bit to "0".
"0" can be set by software, but "1" cannot be set.
0 : Interrupts disabled 1 : Interrupts enabled
Fig. 14 Structure of interrupt-related registers
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Key Input Interrupt (Key-on Wake Up)
A Key-on wake up interrupt request is generated by applying a falling edge to any pin of port P0 that have been set to input mode. In other words, it is generated when AND of input level goes from
"1" to "0". An example of using a key input interrupt is shown in Figure 15, where an interrupt request is generated by pressing one of the keys consisted as an active-low key matrix which inputs to ports P00-P03.
Port PXx "L" level output
PULL 0 register Bit 7 = "0"
Port P07 direction register = "1" Port P07 latch
Key input interrupt request
P07 output PULL 0 register Bit 6 = "0"

Port P06 direction register = "1" Port P06 latch
P06 output
PULL 0 register Bit 5 = "0"

Port P05 direction register = "1" Port P05 latch
P05 output PULL 0 register Bit 4 = "0"

Port P04 direction register = "1" Port P04 latch
P04 output PULL 0 register Bit 3 = "1"

Port P03 direction register = "0" Port P03 latch
P03 input
Port P0 Input reading circuit
PULL 0 register Bit 2 = "1"

Port P02 direction register = "0" Port P02 latch
P02 input
PULL 0 register Bit 1 = "1"

Port P01 direction register = "0"
P01 input
Port P01 latch
PULL 0 register Bit 0 = "1"

P00 input
Port P00 latch
Port P00 direction register = "0"
P-channel transistor for pull-up CMOS output buffer
Fig. 15 Connection example when using key input interrupt and port P0 block diagram
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
TIMERS
The 38K2 group has three timers: timer X, timer 1, and timer 2. The division ratio of each timer or prescaler is given by 1/(n + 1), where n is the value in the corresponding timer or prescaler latch. All timers are down count timers. When the timer reaches "0016", an underflow occurs at the next count pulse and the corresponding timer latch is reloaded into the timer and the count is continued. When a timer underflows, the interrupt request bit corresponding to that timer is set to "1".
Timer 1 and Timer 2
The count source of prescaler 12 is the system clock divided by 16. The output of prescaler 12 is counted by timer 1 and timer 2, and a timer underflow periodically sets the interrupt request bit.
Timer X
Timer X can each select in one of four operating modes by setting the timer X mode register.
(1) Timer Mode
b7 b0 Timer X mode register (TM : address 002316) Timer X operating mode bits b1 b0 0 0 : Timer mode 0 1 : Pulse output mode 1 0 : Event counter mode 1 1 : Pulse width measurement mode CNT R0 active edge switch bit 0 : Falling edge active for CNTR0 interrupt Count at rising edge in event counter mode 1 : Rising edge active for CNTR0 interrupt Count at falling edge in event counter mode Timer X count stop bit 0 : Count start 1 : Count stop Not used (return "0" when read)
The timer counts the count source selected by timer count source selection bit.
(2) Pulse Output Mode
The timer counts the system clock divided by 16. Whenever the contents of the timer reach "0016", the signal output from the CNTR0 pin is inverted. If the CNTR0 active edge selection bit is "0", output begins at " H". If it is "1", output starts at "L". When using a timer in this mode, set the corresponding port P51 direction register to output mode.
(3) Event Counter Mode
Operation in event counter mode is the same as in timer mode, except that the timer counts signals input through the CNTR0 pin. When the CNTR0 active edge selection bit is "0", the rising edge of the CNTR0 pin is counted. When the CNTR0 active edge selection bit is "1", the falling edge of the CNTR0 pin is counted.
Fig. 16 Structure of timer X mode register
(4) Pulse Width Measurement Mode
If the CNTR0 active edge selection bit is "0", the timer counts the system clock divided by 16 while the CNTR0 pin is at "H". If the CNTR0 active edge selection bit is "1", the timer counts it while the CNTR0 pin is at "L". The count can be stopped by setting "1" to the timer X count stop bit in any mode. The corresponding interrupt request bit is set each time a timer underflows.
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Data bus
Divider System clock 1/16 Pulse width measurement mode Event counter mode Prescaler X latch (8) Timer mode Pulse output mode Prescaler X (8) Timer X count stop bit CNTR0 interrupt request bit "1" Q Q Toggle flip-flop R Timer X latch (8)
Timer X (8)
P51/CNTR0
CNTR0 active edge selection bit "0" "1"
Timer X interrupt request bit
CNTR0 active edge selection bit
T Timer X latch write Pulse output mode
Port P51 direction register
Port P51 latch Pulse output mode
"0"
Data bus
Prescaler 12 latch (8) Divider System clock 1/16 Prescaler 12 (8)
Timer 1 latch (8)
Timer 2 latch (8)
Timer 1 (8)
Timer 2 (8)
Timer 2 interrupt request bit Timer 1 interrupt request bit
Fig. 17 Timer block diagram
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
SERIAL INTERFACE Serial I/O
Serial I/O can be used as either clock synchronous or asynchronous (UART) serial I/O. A dedicated timer (baud rate generator) is also provided for baud rate generation.
(1) Clock Synchronous Serial I/O Mode
Clock synchronous serial I/O mode can be selected by setting the mode selection bit of the serial I/O control register (bit 6 of address 0FE016) to "1". For clock synchronous serial I/O, the transmitter and the receiver must use the same clock. If an internal clock is used, transfer is started by a write signal to the Trancemit/Receive buffer register.
Data bus Address 002616
Receive buffer register Serial I/O control register
Address 0FE016
Receive buffer full flag (RBF) Receive interrupt request (RI)
Clock control circuit
P40/EXDREQ/RxD
Receive shift register
Shift clock
P42/EXTC/SCLK Serial I/O synchronous clock selection bit Frequency division ratio 1/(n+1)
Baud rate generator
BRG count source selection bit System clock 1/4 P43/EXA1/SRDY F/F
Falling-edge detector
1/4
Address 0FE216
Clock control circuit
Shift clock P41/EXDACK/TxD
Transmit shift register Transmit buffer register
Transmit shift register shift completion flag (TSC) Transmit interrupt source selection bit Transmit interrupt request (TI) Transmit buffer empty flag (TBE) Address 002716
Address 002616 Data bus
Serial I/O status register
Fig. 18 Block diagram of clock synchronous serial I/O
Transfer shift clock (1/2 to 1/2048 of the internal clock, or an external clock) Serial output TXD Serial input RXD Receive enable signal SRDY Write signal to receive/transmit buffer register (address 002616) TBE = 0 RBF = 1 TSC = 1 Overrun error (OE) detection D0 D0 D1 D1 D2 D2 D3 D3 D4 D4 D5 D5 D6 D6 D7 D7
TBE = 1 TSC = 0
Notes 1 : The transmit interrupt (TI) can be generated either when the transmit buffer register has emptied (TBE = 1) or after the transmit shift operation has ended (TSC=1), by setting the transmit interrupt source selection bit (TIC) of the serial I/O1 control register. 2 : If data is written to the transmit buffer register when TSC=0, the transmit clock is generated continuously and serial data is output continuously from the TXD pin. 3 : The receive interrupt (RI) is set when the receive buffer full flag (RBF) becomes "1" .
Fig. 19 Operation of clock synchronous serial I/O function
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(2) Asynchronous Serial I/O (UART) Mode
Clock asynchronous serial I/O mode (UART) can be selected by setting the serial I/O mode selection bit of the serial I/O control register to "0". Eight serial data transfer formats can be selected, and the transfer formats used by a transmitter and receiver must be identical. The transmit and receive shift registers each have a buffer regis-
ter, but the two buffers have the same address in memory. Since the shift register cannot be written to or read from directly, transmit data is written to the transmit buffer, and receive data is read from the receive buffer. The transmit buffer can also hold the next data to be transmitted, and the receive buffer register can hold a character while the next character is being received.
Data bus Address 002616 Serial I/O1 control register Address 0FE016 Receive buffer full flag (RBF) Receive interrupt request (RI) 1/16 PE FE SP detector Clock control circuit Serial I/O synchronous clock selection bit P42/EXTC/SCLK BRG count source selection bit System clock 1/4 Frequency division ratio 1/(n+1) Baud rate generator Address 0FE216
ST/SP/PA generator
P40/EXDREQ/RxD
OE Receive buffer register Character length selection bit STdetector 7 bits Receive shift register
8 bits
UART control register Address 0FE116
1/16 P41/EXDACK/TxD Character length selection bit
Transmit buffer register
Transmit shift register shift completion flag (TSC) Transmit interrupt source selection bit Transmit interrupt request (TI) Transmit buffer empty flag (TBE) Serial I/O status register Address 002716
Transmit shift register
Address 002616 Data bus
Fig. 20 Block diagram of UART serial I/O
Transmit or receive clock Transmit buffer write signal TBE=0 TSC=0 TBE=1 Serial output TXD ST D0 TBE=0 TBE=1 D1 1 start bit 7 or 8 data bits 1 or 0 parity bit 1 or 2 stop bit (s) SP ST D0 D1
Generated
TSC=1 SP at 2nd bit in 2-stop-bit mode
Receive buffer read signal
RBF=1 Serial input RXD ST D0 D1 SP ST D0
RBF=0
RBF=1
D1
SP
Notes 1 : Error flag detection occurs at the same time that the RBF flag becomes "1" (at 1st stop bit, during reception). 2 : T he transmit interrupt (TI) can be generated to occur when either the TBE or TSC flag becomes "1", depending on the setting of the transmit interrupt source selection bit (TIC) of the serial I/O1 control register. 3 : T he receive interrupt (RI) is set when the RBF flag becomes "1". 4 : After data is written to the transmit buffer register when TSC=1, 0.5 to 1.5 cycles of the data shift cycle is necessary until changing to TSC=0.
Fig. 21 Operation of UART serial I/O function
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
[Serial I/O Control Register (SIOCON)] 0FE016
The serial I/O control register contains eight control bits for the serial I/O function.
[UART Control Register (UARTCON)] 0FE116
The UART control register consists of four control bits (bits 0 to 3) which are valid when asynchronous serial I/O is selected and set the data format of an data transfer.
[Serial I/O Status Register (SIOSTS)] 002716
The read-only serial I/O status register consists of seven flags (bits 0 to 6) which indicate the operating status of the serial I/O function and various errors. Three of the flags (bits 4 to 6) are valid only in UART mode. The receive buffer full flag (bit 1) is cleared to "0" when the receive buffer is read. If there is an error, it is detected at the same time that data is transferred from the receive shift register to the receive buffer register, and the receive buffer full flag is set. A write to the serial I/O status register clears all the error flags OE, PE, FE, and SE (bit 3 to bit 6, respectively). Writing "0" to the serial I/O enable bit SIOE (bit 7 of the serial I/O control register) also clears all the status flags, including the error flags. All bits of the serial I/O status register are initialized to "0" at reset, but if the transmit enable bit (bit 4) of the serial I/O control register has been set to "1", the transmit shift register shift completion flag (bit 2) and the transmit buffer empty flag (bit 0) become "1".
[Transmit Buffer/Receive Buffer Register (TB/ RB)] 002616
The transmit buffer register and the receive buffer register are located at the same address. The transmit buffer register is writeonly and the receive buffer register is read-only. If a character bit length is 7 bits, the MSB of data stored in the receive buffer register is "0".
[Baud Rate Generator (BRG)] 0FE216
The baud rate generator determines the baud rate for serial transfer. The baud rate generator divides the frequency of the count source by 1/(n + 1), where n is the value written to the baud rate generator.
sNotes on serial I/O
When setting the transmit enable bit to "1", the serial I/O transmit interrupt request bit is automatically set to "1". When not requiring the interrupt occurrence synchronized with the transmission enalbed, take the following sequence. Set the serial I/O transmit interrupt enable bit to "0" (disabled). Set the transmit enable bit to "1". Set the serial I/O transmit interrupt request bit to "0" after 1 or more instructions have been executed. Set the serial I/O transmit interrupt enable bit to "1" (enabled).
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
Serial I/O status register (SIOSTS : address 002716) Transmit buffer empty flag (TBE) 0: Buffer full 1: Buffer empty Receive buffer full flag (RBF) 0: Buffer empty 1: Buffer full Transmit shift register shift completion flag (TSC) 0: Transmit shift in progress 1: Transmit shift completed Overrun error flag (OE) 0: No error 1: Overrun error Parity error flag (PE) 0: No error 1: Parity error Framing error flag (FE) 0: No error 1: Framing error Summing error flag (SE) 0: (OE) U (PE) U (FE) =0 1: (OE) U (PE) U (FE) =1 Not used (returns "1" when read)
b7
b0
Serial I/O control register (SIOCON : address 0FE016) BRG count source selection bit (CSS) 0: System clock 1: System clock/4 Serial I/O synchronous clock selection bit (SCS) 0: BRG output divided by 4 when clock synchronous serial I/O is selected. BRG output divided by 16 when UART is selected. 1: External clock input when clock synchronous serial I/O is selected. External clock input divided by 16 when UART is selected. SRDY output enable bit (SRDY) 0: P43 pin operates as ordinary I/O pin 1: P43 pin operates as SRDY output pin Transmit interrupt source selection bit (TIC) 0: Interrupt when transmit buffer has emptied 1: Interrupt when transmit shift operation is completed Transmit enable bit (TE) 0: Transmit disabled 1: Transmit enabled Receive enable bit (RE) 0: Receive disabled 1: Receive enabled Serial I/O mode selection bit (SIOM) 0: Asynchronous serial I/O (UART) 1: Clock synchronous serial I/O Serial I/O enable bit (SIOE) 0: Serial I/O disabled (pins P40-P43 operate as ordinary I/O pins) 1: Serial I/O enabled (pins P40-P43 can operate as serial I/O pins)
b7
b0 UART control regi ster
(UART CON : address 0FE116) Character length selection bit (CHAS) 0: 8 bits 1: 7 bits Parity enable bit (PARE) 0: Parity checking disabled 1: Parity checking enabled Parity selection bit (PARS) 0: Even parity 1: Odd parity Stop bit length selection bit (STPS) 0: 1 stop bit 1: 2 stop bits Not used (return "0" when read) (This is a write disabled bit.) Not used (return "1" when read)
Fig. 22 Structure of serial I/O control registers
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
USB FUNCTION
38K2 Group is equipped with a USB function control circuit (USBFCC) that enables effective interfacing with the host-PC. This circuit is in compliance with USB2.0's Full-Speed Transfer Mode (12 Mbps, equivalent to USB1.1). This circuit also supports all four transfer-types specified in the standard USB specification. The USBFCC has two USB addresses and 6 endpoints, enabling separate control of the HUB functions and peripheral functions. The USB address for HUB functions is equipped with two endpoints. Each endpoint is fixed to a specified transfer type: Endpoint 0 is fixed to Control Transfer and Endpoint 1 is fixed to Interrupt Transfer. The USB address for peripheral functions is equipped with four endpoints that can select its transfer type. Although Endpoint 0 is fixed to Control Transfer, the Endpoints 1 to 3 can be set to Interrupt Transfer, Bulk Transfer, or Isochronous Transfer. A dedicated circuit automatically performs stage management for Control Transfer and packet management for transactions, which are necessary for matching of data transmit/receive timing, error detection, and retry after error. This dedicated control circuit enables the user to develop a program or timing design very easily. Each endpoint can be programmed for data transfer conditions so that the endpoints are adaptive for all USB device class transfer systems.
The data buffer of each endpoint can be assigned to any area in the multi-channel RAM. This feature offers highly efficient memory usage by avoiding re-buffering and enabling simple data modification. The transmit/receive data is directly transferred to the data buffer via the control circuit (direct RAM access type) without disturbing the CPU operation. This mechanism enables the CPU to transfer data smoothly with no drop in performance. In addition to this buffer function, a double-buffer setting will keep a re-buffering stall at a minimum and increase the overall data throughput (max. 64 bytes X 2 channels). As other special signals control, the endpoints have detection functions for the USB bus reset signal, resume signal, suspend signal, and SOF signal, and also have a remote wake-up signal transmit function. When completing data transfer or receiving a special signal, the endpoint generates the corresponding interrupt to the CPU (3 vectors/24 factors). With all this essential yet comprehensive built-in hardware, your system using the 38K2 group will be ready for any USB application that comes its way.
38K2 Group MCU
Built-in Peripheral Functions
Program ROM
CPU Interrupt request
External MCU
External Bus Interface (EXB)
Multi-channel RAM
USB Data transmit/Receive path [Direct RAM Access Type]
USB Bus (USB-Host)
Fig. 23 USB function overview
USB Data Transfer
The USB specification promises 12 Mbps data transfer in the fullspeed mode, that is equivalent to 1.5 M bytes per second of data transactions. However, in USB data transfer, bit-stuffing may be executed depending on the bit patterns of the transfer data, possibly resulting in 1-byte data (normally 8 bits) handled as up to 10 bits. Because USB uses asynchronous transfers, the clock cycle of the USB internal reference clock may change to adjust to the clock phase. Therefore, the access timing of the USBFCC for the multichannel RAM will change owing to the frequency of internal clock : When the USBFCC is operating at =8 MHZ, access for a normal
transfer is performed every 5 to 6 cycles and access for a bit-stuffing transfer is performed in up to 7 cycles. If the EXB function is enabled in the above conditions, this function generates a maximum wait of 1 clock cycle, so that the access is performed every 4 to 8 cycles. When operating at = 6MHZ, a normal access is performed every 4 cycles. If the clock-phase correction of the reference clock occurs, access is performed every 3 to 5 cycles. If bit stuffing occurs at this clock rate, the access cycle will be extended to up to 6 cycles. When the EXB function that generates a maximum 1-wait cycle is used in this condition, the access cycle will be 2 (min.) to 7 (max.) cycles.
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
USB Function Control Circuit (USBFCC) Block Diagram
The following diagram shows the USBFCC block diagram. The circuit comprises: (1) Serial Interface Engine (SIE) (2) Device Control Unit (DCU) (3) Internal Memory Interface (MIF) (4) CPU Interface (CIF)
USB Function Control Circuit
DCU control
SIE control
DCU
DCU status
SIE status
USB Transceiver
CPU
CIF
MIF control
SIE
D0+ D0-
MIF
Transmit/Receive data
Multi-Channel RAM
Fig. 24 USB Function Control Circuit (USBFCC) block diagram
(1) Serial Interface Engine (SIE) The SIE performs the following USB lower-layer protocols (packets, transactions): *Sampling of receive data and clock, generation of transmit clock *Serial-to-parallel conversion of transmit/receive data *NRZI (Non Return Zero Invert) encode/decode *Bit stuffing/unstuffing *SYNC (Synchronization Pattern) detection, EOP (End of Packet) detection *USB address detection, endpoint detection *CRC (Cyclic Redundancy Check) generation and checking (2) Device Control Unit (DCU) The DCU manages the following USB upper-layer protocols (address/endpoint and control-transfer sequence): *Status control for each endpoint *Control-transfer sequence control *Memory interface status control
(3) Memory Interface (MIF) The MIF controls the flow of data transfer between the SIE and the multi-channel RAM under the management of the DCU. (4) CPU Interface (CIF) The CIF performs the following functions: *Mode setting via registers, DCU control signal generation, DCU status signal reading *Interrupt signal generation *Internal bus interface control.
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
USB Port External Circuit Configuration
The operation mode of the USB port driver circuit can be configured by USB control register (address 001016). Figure 25 and Figure 26 show the USB port external circuit block diagram.
VREFCON 0 1 Hiz
3.3V output Low-power mode
VREFE
DVCC
0 1
Hiz
3.3V output Normal mode
VREFE
USBVREF status
VREFCON
USB Reference Voltage Circuit
USBVREF
2.2 F 0.1 F
TRONCON
TRON
TRONE
Full Speed
1.5 k D0+ 27
XOUT
PLL
fVCO "1"
fUSB
"0" UCLKCON
USB Module
USBE
+ USBDIFE
USBE
Full Speed
D0-
27
USBE
Fig. 25 USB port external circuit (D0+, D0-, USBVREF, TrON) block diagram (4.0V VCC 5.25V)
3.0V to 3.6V
(Note)
USBVREF
0.1 F
TRON TRONCON
TRONE
Full Speed
1.5 k D0+ 27
XOUT
PLL
fVCO "1"
fUSB
"0" UCLKCON
USB Module
USBE
+ USBDIFE
USBE
Full Speed
D0-
27
USBE
Note: In Vcc = 3.0 V to 3.6 V connect this pin to Vcc.
Fig. 26 USB port external circuit (D0+, D0-, USBVREF, TrON) block diagram (3.0V VCC 4.0V)
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Endpoint Buffer Area Setting
The buffer area used in data transfer can be assigned to any area of the multi-channel RAM for each endpoint. qBuffer area beginning address The buffer area configuration register (address 0FED16) defines the beginning address of the buffer area (every 32 bytes) for each Endpoint. However, the only RAM area is configurable. *00h [Address 000016], 01h [Address 002016]: Not configurable *02h [Address 004016] to 1Fh [Address 03E016]: Configurable qInterrupt-source dependant buffer area offset address An offset value is added to the beginning address of each source, which is specified by the interrupt source register (address 001D16), for each endpoint. This section describes in detail the beginning address specified by the buffer area set register as offset address 00h, according to each endpoint. (1) Endpoint 00 Endpoint 00 has two kinds of interrupt sources for accessing the buffer. The respective address offsets are: *BSRDY00 (SETUP Buffer Ready Interrupt): Offset address = 00h *BRDY00 (OUT or IN Buffer Ready Interrupt): Offset address = 08h (2) Endpoint 01 The buffer area offset address for each interrupt source for of Endpoint 01 varies according to the contents of the EP01 set register (address 001916). *In single buffer mode (DBLB01 = "0"): Endpoint 01 has only one interrupt source for accessing the buffer. B0RDY01 (Buffer 0 Ready Interrupt): Offset address = 00h *In double buffer mode (DBLB01 = "1"): Endpoint 01 has two kinds of interrupt sources for accessing the buffer. B0RDY01 (Buffer 0 Ready Interrupt): Offset address = 00h
Memory
0FED16
00
0FED16 = 15h
000016 002016
SFR
Disabled to be used
01 02 03
0000 0010 1010 0000 004016 006016
RAM
02A016 15
03E016
1F
Fig. 27 Example setting of buffer area beginning address
B1RDY01 (Buffer 1 Ready Interrupt): The offset address varies according to the double buffer beginning address set bit (BSIZ01). -Offset address = 08h when BSIZ01 = 00 -Offset address = 10h when BSIZ01 = 01 -Offset address = 40h when BSIZ01 = 10 -Offset address = 80h when BSIZ01 = 11 (3) Endpoints 02 and 03 Same as Endpoint 01. (4) Endpoint 10 Same as Endpoint 00. (5) Endpoint 11 Endpoint 11 has only one interrupt source for accessing the buffer. B0RDY11 (Buffer 0 Ready Interrupt): Offset address = 00h
Notes
The selected RAM area must be within addresses 004016 to 03FF16. Make sure the buffer area beginning address is set in agreement with the offset address and the number of transmit/receive data bytes. This is particularly important when in the double buffer mode or when handling 64-byte data.
(a) When selecting Endpoint 00
(b) When selecting Single Buffer Mode
(c) When selecting Double Buffer Mode (when BSIZ01 = 11) Memory 02A016 B0RDY01 Offset 00h
(d) When selecting Endpoint 11
Memory 02A016 BSRDY00 02A816 BRDY00
Offset 00h
Memory 02A016
Offset 00h
Memory 02A016
Offset 00h
08h
B0RDY01 032016 B1RDY01 80h
B0RDY11
Fig. 28 Examples of interrupt source dependant buffer area offset address
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
USB Interrupt Function
USB Interrupt Control Circuit (USBINTCON) has 3 requests and 22 USB-device interrupt request sources. Each interrupt source register enables the user to easily determine which interrupt has occurred. Table 7 shows the list of USB interrupt sources. Table 7 USB interrupt sources Interrupt request bit (IREQ1: Address 003C16) USB bus reset USB interrupt bit (USBIREQ: Address 001716) -- Interrupt source At USB bus reset signal detection: After enabling the USB module (USBE = "1"), an interrupt request occurs when 2.5 s SE0 state is detected in D0+/D0- port. (Equivalent to 120-clock length when fUSB = 48 MHz) At SOF packet receive: After enabling the USB module (USBE = "1"), an interrupt request occurs when SOF packet is detected in D0+/D0- port. Its occurrence does not depend on frame-time or CRC value after SOF packet is transferred. (Normally, SOF packet detection occurs only when fUSB = 48 MHz) At Endpoint 00 data transfer complete: *Buffer ready (read/write enabled state) *Control transfer completed *Status stage transition *SETUP buffer ready (read enabled state) *Control transfer error At Endpoint 01 data transfer complete: *Buffer 0 ready (read/write enabled state) *Buffer 1 ready (read/write enabled state) *Transfer error At Endpoint 02 data transfer complete: *Buffer 0 ready (read/write enabled state) *Buffer 1 ready (read/write enabled state) *Transfer error At Endpoint 03 data transfer complete: *Buffer 0 ready (read/write enabled state) *Buffer 1 ready (read/write enabled state) *Transfer error At Endpoint 10 data transfer complete: *Buffer ready (read/write enabled state) *Control transfer completed *Status stage transition *SETUP buffer ready (read enabled state) *Control transfer error At Endpoin 11 data transfer complete: *Buffer 0 ready (write enabled state) At suspend signal detection: After enabling the USB module (USBE = "1"), an interrupt request occurs when 3 ms J state is detected in D0+/D0- port. (Equivalent to 144,000 clock-length when fUSB = 48MHz) At resume signal detection: After enabling the USB module (USBE = "1") and resume interrupt (RSME = "1"), an interrupt request occurs when a bus state change (J state to SE0 or K state) is detected in D0- port.
USB SOF
--
USB device
EP00
EP01
EP02
EP03
EP10
EP11 SUS
RSM
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
[EPXXREG5]
[USBIREQ]
[USBICON]
[EP00REQ] BRDY00 CTEND00 CTSTS00 BSYDY00 ERR00 [EP01REQ] B0RDY01 B1RDY01 ERR01 EP01 EP01E EP00 EP00E USB device interrupt request
[EP02REQ] B0RDY02 B1RDY02 ERR02 [EP03REQ] B0RDY03 B1RDY03 ERR03 EP03 EP03E EP02 EP02E
[EP10REQ] BRDY10 CTEND10 CTSTS10 BSYDY10 ERR10 EP10 EP10E
[EP11REQ] B0RDY11 EP11
EP11E
SUSE SUS RSME RSM
Fig. 29 USB device interrupt control
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
USB Register List
The USB register list is shown below.
Address
Register Name
SYMBOL
USB SFR bit 7 USBE bit 6 UCLKCON bit 5 USBDIFE bit 4 VREFE bit 3 VREFCON bit 2 TRONE bit 1 TRONCON AD1E bit 0 WKUP AD0E
001016 001116 001216 001316 001416 001516 001616 001716 001816 001916 001A16 001B16 001C16 001D16 001E16 001F16 0FEC16 0FED16 (1) Endpoint 00 001916 001A16 001B16 001C16 001D16 001E16 001F16 0FEC16 0FED16 (2) Endpoint 01 001916 001A16 001B16 001C16 001D16 001E16 001F16 0FEC16 0FED16 (3) Endpoint 02 001916 001A16 001B16 001C16 001D16 001E16 001F16 0FEC16 0FED16 (4) Endpoint 03 001916 001A16 001B16 001C16 001D16 001E16 001F16 0FEC16 0FED16 (5) Endpoint 10 001916 001A16 001B16 001C16 001D16 001E16 001F16 0FEC16 0FED16 (6) Endpoint 11 001916 001A16 001B16 001C16 001D16 001E16 001F16 0FEC16 0FED16
USB control register USB Function/Hub enable register USB function address register USB HUB address register Frame number register Low Frame number register High USB interrupt source enable register USB interrupt source register Endpoint index register Endpoint field register 1 Endpoint field register 2 Endpoint field register 3 Endpoint field register 4 Endpoint field register 5 Endpoint field register 6 Endpoint field register 7 Endpoint field register 8 Endpoint field register 9
USBCON USBAE USBA0 USBA1 FNUML FNUMH USBICON USBIREQ USBINDEX EPXXREG1 EPXXREG2 EPXXREG3 EPXXREG4 EPXXREG5 EPXXREG6 EPXXREG7 EPXXREG8 EPXXREG9
USBADD0[6:0] USBADD1[6:0] FNUM[7:0] RSME RSM SUSE SUS EP11E EP11 EP10E EP10 EP03E EP03 EP02E EP02 ADIDX FNUM[10:8] EP01E EP00E EP01 EP00 EPIDX[1:0]
EP00 stage register EP00 control register 1 EP00 control register 2 EP00 control register 3 EP00 interrupt source register EP00 byte number register
EP00STG EP00CON1 EP00CON2 EP00CON3 EP00REQ EP00BYT
ERR00
BSRDY00
SETUP00 PID00[1:0] BVAL00 CTENDE00 CTSTS00 CTEND00 BRDY00 BBYT00[3:0]
EP00 buffer area set register
EP00BUF
BADD00[4:0]
EP01 set register EP01 control register 1 EP01 control register 2 EP01 control register 3 EP01 interrupt source register EP01 byte number register 0 EP01 byte number register 1 EP01 MAX. packet size register EP01 buffer area set register
EP01CFG EP01CON1 EP01CON2 EP01CON3 EP01REQ EP01BYT0 EP01BYT1 EP01MAX EP01BUF
TYP01[1:0]
DIR01
ITMD01
SQCL01
DBLB01
ERR01 B0BYT01[6:0] B1BYT01[6:0] MXPS01[6:0] BADD01[4:0]
BSIZ01[1:0] PID01[1:0] B0VAL01 B1VAL01 B1RDY01 B0RDY01
EP02 set register EP02 control register 1 EP02 control register 2 EP02 control register 3 EP02 interrupt source register EP02 byte number register 0 EP02 byte number register 1 EP02 MAX. packet size register EP02 buffer area set register
EP02CFG EP02CON1 EP02CON2 EP02CON3 EP02REQ EP02BYT0 EP02BYT1 EP02MAX EP02BUF
TYP02[1:0]
DIR02
ITMD02
SQCL02
DBLB02
ERR02 B0BYT02[6:0] B1BYT02[6:0] MXPS02[6:0] BADD02[4:0]
BSIZ02[1:0] PID02[1:0] B0VAL02 B1VAL02 B1RDY02 B0RDY02
EP03 set register EP03 control register 1 EP03 control register 2 EP03 control register 3 EP03 interrupt source register EP03 byte number register 0 EP03 byte number register 1 EP03 MAX. packet size register EP03 buffer area set register
EP03CFG EP03CON1 EP03CON2 EP03CON3 EP03REQ EP03BYT0 EP03BYT1 EP03MAX EP03BUF
TYP03[1:0]
DIR03
ITMD03
SQCL03
DBLB03
ERR03 B0BYT03[6:0] B1BYT03[6:0] MXPS03[6:0] BADD03[4:0]
BSIZ03[1:0] PID03[1:0] B0VAL03 B1VAL03 B1RDY03 B0RDY03
EP10 set register EP10 control register 1 EP10 control register 2 EP10 control register 3 EP10 interrupt source register EP10 byte number register
EP10STG EP10CON1 EP10CON2 EP10CON3 EP10REQ EP10BYT
ERR10
BSRDY10
SETUP10 PID10[1:0] BVAL10 CTENDE10 CTSTS10 CTEND10 BRDY10 BBYT10[3:0]
EP10 buffer area set register
EP10BUF
BADD10[4:0]
EP11 set register EP11 control register 1 EP11 control register 2 EP11 interrupt source register EP11 byte number register
EP11CFG EP11CON1 EP11CON2 EP11REQ EP11BYT0
TYP11
DIR11
SQCL11 PID11[1:0] B0VAL11 B0RDY11 B0BYT11
EP11 buffer area set register
EP11BUF
BADD11[4:0]
: Not used
Fig. 30 USB related registers
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
USB Related Registers
The USB related registers are shown below.
b7
b0
USB control register (USBCON) [address 001016]
Bit symbol WKUP
TRONCON TRONE VREFCON VREFE USBDIFE UCLKCON USBE
At reset RW H/W S/W 0 : Returning to BUS idle state by writing "1" first and 0 Remote wakeup bit - OO then "0". (Remote wakeup signal) 1 : K-state output 0 : "L" output mode (valid in TRONE = "1") TrON output control bit 0 - OO 1 : "H" output mode (valid in TRONE = "1") 0 : TrON port output disabled (Hi-Z state) TrON output enable bit 0 - OO 1 : TrON port output enabled USB reference voltage control bit 0 : Normal mode (valid in VREFE = "1") 0 - OO 1 : Low current mode (valid in VREFE = "1") USB reference voltage enable bit 0 : USB reference voltage circuit operation disabled 0 - OO 1 : USB reference voltage circuit operation enabled USB difference input enable bit 0 : Upstream-port difference input circuit operation disabled 0 - OO 1 : Upstream--port difference input circuit operation enabled 0 : External oscillating clock f(XIN) USB clock select bit 0 - OO 1 : PLL circuit output clock (fVCO) USB module operation enable bit 0 : USB module reset 0 - OO 1 : USB module operation enabled Bit name Function -: State remaining
Fig. 31 Structure of USB control register
b7
b0
0
00
000
USB function/HUB enable register (USBAE) [address 001116]
Bit symbol AD0E AD1E b7:b2
Bit name USB function enable bit USB HUB enable bit Not used
Function 0: USB function address register invalidated 1: USB function address register validated 0: USB HUB address register invalidated 1: USB HUB address register validated Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO 0 - - - OO OO
-: State remaining
Fig. 32 Structure of USB function/HUB enable register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
USB function address register (USBA0) [address 001216]
Bit symbol USBADD0 [6:0] b7
Bit name USB function address bit
Function In AD0E = "0", this value changes after writing. In AD0E = "1", this value changes after completion of SET_ADDRESS control transferring. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 OO
Not used
-
-
OO
-: State remaining
Fig. 33 Structure of USB function address register
b7
b0
0
USB HUB address register (USBA1) [address 001316]
Bit symbol USBADD1 [6:0] b7
Bit name USB HUB address bit
Function In AD1E = "0", this value changes after writing. In AD1E = "1", this value changes after completion of SET_ADDRESS control transferring. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 OO
Not used
-
-
OO
-: State remaining
Fig. 34 Structure of USB HUB address register
b7
b0
Frame number register Low (FNUML) [address 001416]
Bit symbol FNUM [7:0]
Bit name Frame number low bit
Function The frame number is updated at SOF reception.
At reset RW H/W S/W InIn- O
definite definite
Fig. 35 Structure of Frame number register Low
b7
b0
0
00
0
0
Frame number register High (FNUMH) [address 001516]
Bit symbol FNUM [10:8] b7:b3
Bit name Frame number high bit Not used
Function The frame number is updated at SOF reception. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W InIn- O
definite definite - -
OO
-: State remaining
Fig. 36 Structure of Frame number register High
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
USB interrupt source enable register (USBICON) [address 001616]
Bit symbol EP00E EP01E EP02E EP03E EP10E EP11E SUSE RSME
Bit name USB function/Endpoint 0 interrupt enable bit USB function/Endpoint 1 interrupt enable bit USB function/Endpoint 2 interrupt enable bit USB function/Endpoint 3 interrupt enable bit USB HUB/Endpoint 0 interrupt enable bit USB HUB/Endpoint 1 interrupt enable bit Suspend interrupt enable bit Resume interrupt enable bit 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled
Function
At reset RW H/W S/W 0 0 OO 0 0 0 0 0 0 0 0 0 0 0 0 0 0 OO OO OO OO OO OO OO
Fig. 37 Structure of USB interrupt source enable register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
USB interrupt source register (USBIREQ) [address 001716]
Bit symbol EP00
Bit name USB function/Endpoint 0 interrupt bit
EP01
USB function/Endpoint 1 interrupt bit
EP02
USB function/Endpoint 2 interrupt bit
EP03
USB function/Endpoint 3 interrupt bit
EP10
USB HUB/Endpoint 0 interrupt bit
EP11
USB HUB/Endpoint 1 interrupt bit
SUS
Suspend interrupt bit
RSM
Resume interrupt bit
At reset RW H/W S/W This bit is set to "1" when any one of EP00 interrupt 0 0 O source register's bits at least is set to "1". This bit is cleared to "0" by clearing EP00 interrupt source register to "0016". Writing to this bit causes no state change. This bit is set to "1" when any one of EP01 interrupt 0 0 O source register's bits at least is set to "1". This bit is cleared to "0" by clearing EP01 interrupt source register to "0016". Writing to this bit causes no state change. This bit is set to "1" when any one of EP02 interrupt 0 0 O source register's bits at least is set to "1". This bit is cleared to "0" by clearing EP02 interrupt source register to "0016". Writing to this bit causes no state change. This bit is set to "1" when any one of EP03 interrupt 0 0 O source register's bits at least is set to "1". This bit is cleared to "0" by clearing EP03 interrupt source register to "0016". Writing to this bit causes no state change. This bit is set to "1" when any one of EP10 interrupt 0 0 O source register's bits at least is set to "1". This bit is cleared to "0" by clearing EP10 interrupt source register to "0016". Writing to this bit causes no state change. This bit is set to "1" when any one of EP11 interrupt 0 0 O source register's bits at least is set to "1". This bit is cleared to "0" by clearing EP11 interrupt source register to "0016". Writing to this bit causes no state change. 0 : No interrupt request issued 0 0 OO 1 : Interrupt request issued This bit is set to "1" when detecting 3 ms or more of Jstate, using USB clock (fUSB) at 48 MHz. "0" can be set by software, but "1" cannot be set. This bit is set to "1" when the USB bus state changes 0 0 O from J-state to K-state or SE0 in the resume interrupt enable bit = "1". It is also "1" in the condition of internal clock stopped. This bit is cleared to "0" by clearing the resume interrupt enable bit. Writing to this bit causes no state change. Function
Fig.38 Structure of USB interrupt source register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
00
00
Endpoint index register (USBINDEX) [address 001816]
Bit symbol
Bit name
Function b1 b0 0 0 : Endpoint 0 0 1 : Endpoint 1 1 0 : Endpoint 2 1 1 : Endpoint 3 0 : USB function 1 : USB HUB Write "0" when writing. "0" is read when reading.
EPIDX [1:0] Endpoint index bit
At reset RW H/W S/W 0 - OO
ADIDX b7:b3
Address index bit Not used
0 -
- -
OO OO
-: State remaining
Fig. 39 Structure of Endpoint index register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(1) Endpoint 00
b7 b0
0
0
0
00
00
EP00 stage register (EP00STG) [address 001916]
Bit symbol SETUP00
Bit name SETUP packet detection bit
Function This bit is set to "1" at reception of SETUP packet. Writing "0" to this bit clears this bit if the next SETUP token does not occur. Writing "1" to this bit causes no state change of the status flags. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 1 1 OO
b7:b1
Not used
-
-
OO
-: State remaining
Fig. 40 Structure of EP00 stage register
b7
b0
0
0
0
00
0
EP00 control register 1 (EP00CON1) [address 001A16]
Bit symbol PID00 [1:0]
Bit name Response PID bit
Function b1 b0 0 0 : NAK 0 1 : Automatic response (ACK, NAK, DATA0, DATA1) 1 X : STALL At occurrence of control transfer error: B1 is set to "1" by the hardware. At reception of SETUP token: B1 and b0 are cleared to "0" by the hardware. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b2
Not used
-
-
OO
-: State remaining
Fig. 41 Structure of EP00 control register 1
b7
b0
0
0
00
00
0
EP00 control register 2 (EP00CON2) [address 001B16]
Bit symbol BVAL00
Bit name Buffer enable bit
Function 0 : NAK transmission (SIE is disabled to read a buffer.) 1 : Transmitting/receiving data set state (SIE is possible to read from/write to a buffer.) At reception of SETUP token: This bit is cleared to "0" by the hardware. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b1
Not used
-
-
OO
-: State remaining
Fig. 42 Structure of EP00 control register 2
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
0
00
00
0
EP00 control register 3 (EP00CON3) [address 001C16]
Bit symbol
Bit name
Function 0 : NAK transmission in the status stage 1 : Control transfer completion enabled (SIE transmits NULL/ACK.) (valid in PID00 = "012") At reception of SETUP token: This bit is cleared to "0" by the hardware. Write "0" when writing. "0" is read when reading.
CTENDE00 Control transfer completion enable bit
At reset RW H/W S/W 0 - OO
b7:b1
Not used
-
-
OO
-: State remaining
Fig. 43 Structure of EP00 control register 3
b7
b0
000
EP00 interrupt source register (EP00REQ) [address 001D16]
Bit symbol BRDY00
Bit name USB function/Endpoint 0 buffer ready interrupt bit
Function
CTEND00
CTSTS00
BSRDY00
ERR00
b7:b5
0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when the buffer is ready state (enabled to be read/written) on USB function/Endpoint 0. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 0 control 0: No interrupt request issued transfer completion interrupt bit 1: Interrupt request issued This bit is set to "1" when control transfer is completed (NULL/ACK transmission in the status stage) on USB function/Endpoint 0. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 0 status 0: No interrupt request issued 1: Interrupt request issued stage transition interrupt bit This bit is set to "1" when transition to status stage occurs in CTENDE00 = "0" (control transfer completion disabled) on USB function/Endpoint 0. "0" can be set by software, but "1" cannot be set. At transfer of control write: When receiving IN-token in data stage (OUT) At transfer of control read: When receiving OUT-token in data stage (IN) At no data transfer: Nothing occurs. USB function/Endpoint 0 SETUP 0: No interrupt request issued 1: Interrupt request issued buffer ready interrupt bit This bit is set to "1" when the exclusive buffer for SETUP is ready state (enabled to be read) on USB function/Endpoint 0. "0" can be set by software, but "1" cannot be set. 0: No interrupt request issued USB function/Endpoint 0 error 1: Interrupt request issued interrupt bit This bit is set to "1" when control transfer error occurs on USB function/Endpoint 0. This bit is cleared to "0" by the hardware when receiving SETUP token. "0" can be set by software, but "1" cannot be set. Write "0" when writing. Not used "0" is read when reading.
At reset RW H/W S/W 0 0 OO
0
0
OO
0
0
OO
0
0
OO
0
0
OO
-
-
OO
-: State remaining
Fig. 44 Structure of EP00 interrupt source register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
0
0
0
EP00 byte number register (EP00BYT) [address 001E16]
Bit symbol BBYT00 [3:0] b7:b4
Bit name
Function
Transmit/receive byte number bit OUT : The received byte number is automatically set. IN : Set the transmitting byte number. Write 0 when writing. Not used 0 is read when reading.
At reset RW H/W S/W 0 -- OO -- -- OO
--: State remaining
Fig. 45 Structure of EP00 byte number register
b7
b0
0
00
EP00 buffer area set register (EP00BUF) [address 0FED16]
Bit symbol BADD00 [4:0]
Bit name EP00 beginning address set bit
Function Set the beginning address of EP00's buffer area. (32-byte unit) b4b3b2b1b0 0 0 0 1 0 : 004016 0 0 0 1 1 : 006016 .............. 1 1 1 1 0 : 03C016 1 1 1 1 1 : 03E016 Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b5
Not used
-
-
OO
-: State remaining
Fig. 46 Structure of EP00 buffer area set register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(2) Endpoint 01
b7 b0
EP01 set register (EP01CFG) [address 001916]
Bit symbol BSIZ01 [1:0]
DBLB01 SQCL01
ITMD01 DIR01 TYP01 [1:0]
At reset RW H/W S/W Double buffer beginning address set In double buffer mode set the beginning address of 0 - OO buffer 1 area, using a relative value for the beginning bit address of buffer 0. b1b0 0 0 = 8 bytes 0 1 = 16 bytes 1 0 = 64 bytes 1 1 = 128 bytes 0 : Single buffer mode Buffer mode select bit 0 - OO 1 : Double buffer mode 0 : Toggle bit clear disabled Sequence toggle bit clear bit 0 - OO 1 : Writing "1" clears the toggle bit and DATA0 is used as the next data PID. "0" is always read when reading. Interrupt toggle mode select bit 0 : Normal mode 0 - OO 1 : Continuous toggle mode (valid at Interrupt IN transfer) 0 : OUT (Data is received from the host.) Transfer direction bit 0 - OO 1 : IN (Data is transmitted to the host.) b7b6 Transfer type bite 0 - OO 0 0 : Transfer disabled 0 1 : Bulk transfer 1 0 : Interrupt transfer 1 1 : Isochronous transfer Bit name Function -: State remaining
Fig. 47 Structure of EP01 set register
b7
b0
000
0
0
0
EP01 control register 1 (EP01CON1) [address 001A16]
Bit symbol PID01 [1:0]
Bit name Response PID bit
Function b1 b0 0 0 : NAK 0 1 : Automatic response (ACK, NAK, DATA0, DATA1) 1 X : STALL At occurrence of over-max. packet size : B1 is set to "1" by the hardware. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b2
Not used
-
-
OO
-: State remaining
Fig. 48 Structure of EP01 control register 1
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
0
00
0
0
0
EP01 control register 2 (EP01CON2) [address 001B16]
Bit symbol B0VAL01
Bit name Buffer 0 enable bit
b7:b1
Not used
At reset RW H/W S/W - OO When the selected endpoint is IN, writing "1" to this bit 0 makes the transmitting data a set state (SIE is possible to read). When the selected endpoint is OUT, writing "1" to this bit makes data reception possible (SIE is possible to write). - - OO Write "0" when writing. Function "0" is read when reading. -: State remaining
Fig. 49 Structure of EP01 control register 2
b7 b0
0000
000
EP01 control register 3 (EP01CON3) [address 001C16]
Bit symbol B1VAL01
Bit name Buffer 1 enable bit
b7:b1
Not used
At reset RW H/W S/W - OO When the selected endpoint is IN, writing "1" to this bit 0 makes the transmitting data a set state (SIE is possible to read). When the selected endpoint is OUT, writing "1" to this bit makes data reception possible (SIE is possible to write). In double buffer mode this bit is valid. - - OO Write "0" when writing. "0" is read when reading. Function -: State remaining
Fig.50 Structure of EP01 control register 3
b7
b0
0
0
0
0
0
EP01 interrupt source register (EP01REQ) [address 001D16]
Bit symbol B0RDY01
Bit name
Function
B1RDY01
ERR01
b7:b3
USB function/Endpoint 1 buffer 0 0: No interrupt request issued ready interrupt bit 1: Interrupt request issued This bit is set to "1" when the buffer 0 is ready state (enabled to be read/written) on USB function/Endpoint 1. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 1 buffer 1 0: No interrupt request issued ready interrupt bit 1: Interrupt request issued In single buffer mode this bit is invalid. This bit is set to "1" when the buffer 1 is ready state (enabled to be read/written) on USB function/Endpoint 1 in double buffer mode. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 1 error 0: No interrupt request issued interrupt bit 1: Interrupt request issued This bit is set to "1" when STALL response occurs on USB function/Endpoint 1. "0" can be set by software, but "1" cannot be set. Not used Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 OO
0
0
OO
0
0
OO
-
-
OO
Fig. 51 Structure of EP01 interrupt source register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
EP01 byte number register 0 (EP01BYT0) [address 001E16]
Bit symbol B0BYT01 [6:0]
Bit name IN : Transmit byte number bit
Function Single buffer mode: Set the transmitting byte number. Double buffer mode : Set the transmitting byte number of buffer 0. Single buffer mode : The received byte number is automatically set. Double buffer mode : The received byte number of buffer 0 is automatically set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
OUT : Receive byte number bit
0
-
O
b7
Not used
-
-
OO
-: State remaining
Fig. 52 Structure of EP01 byte number register 0
b7
b0
0
EP01 byte number register 1 (EP01BYT1) [address 001F16]
Bit symbol B1BYT01 [6:0]
Bit name IN : Transmit byte number bit
Function Single buffer mode: These bits are invalid. Double buffer mode : Set the transmitting byte number of buffer 1. Single buffer mode: These bits are invalid. Double buffer mode : The received byte number of buffer 1 is automatically set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
OUT : Receive byte number bit
0
-
O
b7
Not used
-
-
OO
-: State remaining
Fig. 53 Structure of EP01 byte number register 1
b7
b0
0
EP01 MAX. packet size register (EP01MAX) [address 0FEC16]
Bit symbol MXPS01 [6:0] b7
Bit name Max. packet size bit Not used
Function IN : These bits are invalid. OUT : Set the maximum packet size. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO - - OO
-: State remaining
Fig. 54 Structure of EP01 MAX. packet size register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
00
0
EP01 buffer area set register (EP01BUF) [address 0FED16]
Bit symbol BADD01 [4:0]
Bit name EP01 beginning address set bit
Function Set the beginning address of EP01's buffer area. (32-byte unit) b4b3b2b1b0 0 0 0 1 0 : 004016 0 0 0 1 1 : 006016 .............. 1 1 1 1 0 : 03C016 1 1 1 1 1 : 03E016 Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b5
Not used
-
-
OO
-: State remaining
Fig. 55 Structure of EP01 buffer area set register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(3) Endpoint 02
b7 b0
EP02 set register (EP02CFG) [address 001916]
Bit symbol BSIZ02 [1:0]
DBLB02 SQCL02
ITMD02 DIR02 TYP02 [1:0]
At reset RW H/W S/W Double buffer beginning address set In double buffer mode set the beginning address of buffer 1 0 - OO area, using a relative value for the beginning address of bit buffer 0. b1b0 0 0 = 8 bytes 0 1 = 16 bytes 1 0 = 64 bytes 1 1 = 128 bytes 0 : Single buffer mode Buffer mode select bit 0 - OO 1 : Double buffer mode 0 : Toggle bit clear disabled Sequence toggle bit clear bit 0 - OO 1 : Writing "1" clears the toggle bit and DATA0 is used as the next data PID. "0" is always read when reading. Interrupt toggle mode select bit 0 : Normal mode 0 - OO 1 : Continuous toggle mode (valid at Interrupt IN transfer) 0 : OUT (Data is received from the host.) Transfer direction bit 0 - OO 1 : IN (Data is transmitted to the host.) b7b6 Transfer type bite 0 - OO 0 0 : Transfer disabled 0 1 : Bulk transfer 1 0 : Interrupt transfer 1 1 : Isochronous transfer Bit name Function -: State remaining
Fig. 56 Structure of EP02 set register
b7
b0
00
0
0
00
EP02 control register 1 (EP02CON1) [address 001A16]
Bit symbol PID02 [1: 0]
Bit name Response PID bit
Function b1 b0 0 0 : NAK 0 1 : Automatic response (ACK, NAK, DATA0, DATA1) 1 X : STALL At occurrence of over-max. packet size : B1 is set to "1" by the hardware. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b2
Not used
-
-
OO
-: State remaining
Fig. 57 Structure of EP02 control register 1
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
0
0
00
0
0
EP02 control register 2 (EP02CON2) [address 001B16]
Bit symbol B0VAL02
Bit name Buffer 0 enable bit
b7:b1
Not used
At reset RW H/W S/W - OO When the selected endpoint is IN, writing "1" to this bit 0 makes the transmitting data a set state (SIE is possible to read). When the selected endpoint is OUT, writing "1" to this bit makes data reception possible (SIE is possible to write). - - OO Write "0" when writing. Function "0" is read when reading. -: State remaining
Fig. 58 Structure of EP02 control register 2
b7 b0
0
0
0
00
0
0
EP02 control register 3 (EP02CON3) [address 001C16]
Bit symbol B1VAL02
Bit name Buffer 1 enable bit
b7:b1
Not used
At reset RW H/W S/W - OO When the selected endpoint is IN, writing "1" to this bit 0 makes the transmitting data a set state (SIE is possible to read). When the selected endpoint is OUT, writing "1" to this bit makes data reception possible (SIE is possible to write). In double buffer mode this bit is valid. - - OO Write "0" when writing. Function "0" is read when reading. -: State remaining
Fig. 59 Structure of EP02 control register 3
b7
b0
0
0
0
0
0
EP02 interrupt source register (EP02REQ) [address 001D16]
Bit symbol B0RDY02
Bit name
Function
B1RDY02
ERR02
b7 to b3
USB function/Endpoint 2 buffer 0 0 : No interrupt request issued ready interrupt bit 1 : Interrupt request issued This bit is set to "1" when the buffer 0 is ready state (enabled to be read/written) on USB function/Endpoint 2. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 2 buffer 1 0 : No interrupt request issued ready interrupt bit 1 : Interrupt request issued In single buffer mode this bit is invalid. This bit is set to "1" when the buffer 1 is ready state (enabled to be read/written) on USB function/Endpoint 2 in double buffer mode. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 2 error 0 : No interrupt request issued interrupt bit 1 : Interrupt request issued This bit is set to "1" when STALL response occurs on USB function/Endpoint 2. "0" can be set by software, but "1" cannot be set. Not used Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 OO
0
0
OO
0
0
OO
-
-
OO
Fig. 60 Structure of EP02 interrupt source register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
EP02 byte number register 0 (EP02BYT0) [address 001E16]
Bit symbol B0BYT02 [6:0]
Bit name IN : Transmit byte number bit
Function Single buffer mode: Set the transmitting byte number. Double buffer mode : Set the transmitting byte number of buffer 0. Single buffer mode: The received byte number is automatically set. Double buffer mode : The received byte number of buffer 0 is automatically set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
OUT : Receive byte number bit
0
-
O
b7
Not used
-
-
OO
-: State remaining
Fig. 61 Structure of EP02 byte number register 0
b7
b0
0
EP02 byte number register 1 (EP02BYT1) [address 001F16]
Bit symbol B1BYT02 [6:0]
Bit name IN : Transmit byte number bit
Function Single buffer mode: These bits are invalid. Double buffer mode : Set the transmitting byte number of buffer 1. Single buffer mode: These bits are invalid. Double buffer mode : The received byte number of buffer 1 is automatically set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
OUT : Receive byte number bit
0
-
O
b7
Not used
-
-
OO
-: State remaining
Fig. 62 Structure of EP02 byte number register 1
b7
b0
0
EP02 MAX. packet size register (EP02MAX) [address 0FEC16]
Bit symbol MXPS02 [6:0] b7
Bit name Max. packet size bit Not used
Function IN : These bits are invalid. OUT : Set the maximum packet size. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO - - OO
-: State remaining
Fig. 63 Structure of EP02 MAX. packet size register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
00
0
EP02 buffer area set register (EP02BUF) [address 0FED16]
Bit symbol BADD02 [4:0]
Bit name EP02 beginning address set bit
Function Set the beginning address of EP02's buffer area. (32-byte unit) b4b3b2b1b0 0 0 0 1 0 : 004016 0 0 0 1 1 : 006016 .............. 1 1 1 1 0 : 03C016 1 1 1 1 1 : 03E016 Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b5
Not used
-
-
OO
-: State remaining
Fig. 64 Structure of EP02 buffer area set register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(4) Endpoint 03
b7 b0
EP03 set register (EP03CFG) [address 001916]
Bit symbol BSIZ03 [1:0]
DBLB03 SQCL03
ITMD03 DIR03 TYP03 [1:0]
At reset RW H/W S/W Double buffer beginning address set In double buffer mode set the beginning address of buffer 1 0 - OO area, using a relative value for the beginning address of bit buffer 0. b1b0 0 0 = 8 bytes 0 1 = 16 bytes 1 0 = 64 bytes 1 1 = 128 bytes 0 : Single buffer mode Buffer mode select bit 0 - OO 1 : Double buffer mode 0 : Toggle bit clear disabled Sequence toggle bit clear bit 0 - OO 1 : Writing "1" clears the toggle bit and DATA0 is used as the next data PID. "0" is always read when reading. Interrupt toggle mode select bit 0 : Normal mode 0 - OO 1 : Continuous toggle mode (valid at Interrupt IN transfer) 0 : OUT (Data is received from the host.) Transfer direction bit 0 - OO 1 : IN (Data is transmitted to the host.) b7b6 Transfer type bit 0 - OO 0 0 : Transfer disabled 0 1 : Bulk transfer 1 0 : Interrupt transfer 1 1 : Isochronous transfer Bit name Function -: State remaining
Fig. 65 Structure of EP03 set register
b7
b0
000
0
0
0
EP03 control register 1 (EP03CON1) [address 001A16]
Bit symbol PID03 [1:0]
Bit name Response PID bit
Function b1 b0 0 0 : NAK 0 1 : Automatic response (ACK, NAK, DATA0, DATA1) 1 X : STALL At occurrence of over-max. packet size : B1 is set to "1" by the hardware. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b2
Not used
-
-
OO
-: State remaining
Fig. 66 Structure of EP03 control register 1
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
0
0
00
0
0
EP03 control register 2 (EP03CON2) [address 001B16]
Bit symbol B0VAL03
Bit name Buffer 0 enable bit
b7:b1
Not used
At reset RW H/W S/W - OO When the selected endpoint is IN, writing "1" to this bit 0 makes the transmitting data a set state (SIE is possible to read). When the selected endpoint is OUT, writing "1" to this bit makes data reception possible (SIE is possible to write). - - OO Write "0" when writing. Function "0" is read when reading. -: State remaining
Fig. 67 Structure of EP03 control register 2
b7 b0
0000
000
EP03 control register 3 (EP03CON3) [address 001C16]
Bit symbol B1VAL03
Bit name Buffer 1 enable bit
b7:b1
Not used
At reset RW H/W S/W 0 - OO When the selected endpoint is IN, writing "1" to this bit makes the transmitting data a set state (SIE is possible to read). When the selected endpoint is OUT, writing "1" to this bit makes data reception possible (SIE is possible to write). In double buffer mode this bit is valid. - - OO Write "0" when writing. Function "0" is read when reading. -: State remaining
Fig. 68 Structure of EP03 control register 3
b7
b0
0
0
0
0
0
EP03 interrupt source register (EP03REQ) [address 001D16]
Bit symbol B0RDY03
Bit name
Function
B1RDY03
ERR03
b7:b3
USB function/Endpoint 3 buffer 0 0 : No interrupt request issued ready interrupt bit 1 : Interrupt request issued This bit is set to "1" when the buffer 0 is ready state (enabled to be read/written) on USB function/Endpoint 3. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 3 buffer 1 0 : No interrupt request issued ready interrupt bit 1 : Interrupt request issued In single buffer mode this bit is invalid. This bit is set to "1" when the buffer 1 is ready state (enabled to be read/written) on USB function/Endpoint 3 in double buffer mode. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 3 error 0 : No interrupt request issued interrupt bit 1 : Interrupt request issued This bit is set to "1" when STALL response occurs on USB function/Endpoint 3. "0" can be set by software, but "1" cannot be set. Not used Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 OO
0
0
OO
0
0
OO
-
-
OO
Fig. 69 Structure of EP03 interrupt source register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
EP03 byte number register 0 (EP03BYT0) [address 001E16]
Bit symbol B0BYT03 [6:0]
Bit name IN : Transmit byte number bit
Function Single buffer mode: Set the transmitting byte number. Double buffer mode : Set the transmitting byte number of buffer 0. Single buffer mode: The received byte number is automatically set. Double buffer mode : The received byte number of buffer 0 is automatically set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
OUT : Receive byte number bit
0
-
O
b7
Not used
-
-
OO
-: State remaining
Fig. 70 Structure of EP03 byte number register 0
b7
b0
0
EP03 byte number register 1 (EP03BYT1) [address 001F16]
Bit symbol B1BYT03 [6:0]
Bit name IN : Transmit byte number bit
Function Single buffer mode: These bits are invalid. Double buffer mode : Set the transmitting byte number of buffer 1. Single buffer mode: These bits are invalid. Double buffer mode : The received byte number of buffer 1 is automatically set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
OUT : Receive byte number bit
0
-
O
b7
Not used
-
-
OO
-: State remaining
Fig. 71 Structure of EP03 byte number register 1
b7
b0
0
EP03 MAX. packet size register (EP03MAX) [address 0FEC16]
Bit symbol MXPS03 [6:0] b7
Bit name Max. packet size bit Not used
Function IN : These bits are invalid. OUT : Set the maximum packet size. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO - - OO
-: State remaining
Fig. 72 Structure of EP03 MAX. packet size register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
00
0
EP03 buffer area set register (EP03BUF) [address 0FED16]
Bit symbol BADD03 [4:0]
Bit name EP03 beginning address set bit
Function Set the beginning address of EP03's buffer area. (32-byte unit) b4b3b2b1b0 0 0 0 1 0 : 004016 0 0 0 1 1 : 006016 .............. 1 1 1 1 0 : 03C016 1 1 1 1 1 : 03E016 Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b5
Not used
-
-
OO
-: State remaining
Fig. 73 Structure of EP03 buffer area set register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(5) Endpoint 10
b7 b0
0
0
0
00
0
0
EP10 stage register (EP10STG) [address 001916]
Bit symbol SETUP10
Bit name SETUP packet detection bit
Function This bit is set to "1" at reception of SETUP packet. Writing "0" clears this bit if the next SETUP token does not occur. Writing "1" causes no state change of the status flags. This bit change is not for an interrupt source. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 1 1 OO
b7:b1
Not used
-
-
OO
-: State remaining
Fig. 74 Structure of EP10 stage register
b7
b0
0
0
0
00
0
EP10 control register 1 (EP10CON1) [address 001A16]
Bit symbol PID10 [1:0]
Bit name Response PID bit
Function b1 b0 0 0 : NAK 0 1 : Automatic response (ACK, NAK, DATA0, DATA1) 1 X : STALL At occurrence of control transfer error: B1 is set to "1" by the hardware. At reception of SETUP token: B1 and b0 are cleared to "0" by the hardware. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b2
Not used
-
-
OO
-: State remaining
Fig. 75 Structure of EP10 control register 1
b7
b0
0
0
00
00
0
EP10 control register 2 (EP10CON2) [address 001B16]
Bit symbol BVAL10
Bit name Buffer enable bit
Function 0 : NAK transmission (SIE is disabled to read a buffer.) 1 : Transmitting/receiving data set state (SIE is possible to read from/write to a buffer.) (Valid in PID10 = "012") At reception of SETUP token: This bit is cleared to "0" by the hardware. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b1
Not used
-
-
OO
-: State remaining
Fig. 76 Structure of EP10 control register 2
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
0
00
00
0
EP10 control register 3 (EP10CON3) [address 001C16]
Bit symbol
Bit name
Function 0 : NAK transmission in the status stage 1 : Control transfer completion enabled (SIE transmits NULL/ACK.) (Valid in PID10 = "012") At reception of SETUP token: This bit is cleared to "0" by the hardware. Write "0" when writing. "0" is read when reading.
CTENDE10 Control transfer completion enable bit
At reset RW H/W S/W 0 - OO
b7:b1
Not used
-
-
OO
-: State remaining
Fig. 77 Structure of EP10 control register 3
b7
b0
000
EP10 interrupt source register (EP10REQ) [address 001D16]
Bit symbol BRDY10
Bit name USB HUB/Endpoint 10 buffer ready interrupt bit
Function 0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when the buffer is ready state (enabled to be read/written) on USB HUB/Endpoint 10. "0" can be set by software, but "1" cannot be set. 0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when control transfer is completed (NULL/ACK transmission in the status stage) on USB HUB/Endpoint 10. "0" can be set by software, but "1" cannot be set. 0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when transition to status stage occurs in CTENDE10 = "0" (control transfer completion disabled) on USB HUB/Endpoint 10. "0" can be set by software, but "1" cannot be set. At transfer of control write: When receiving IN-token in data stage (OUT) At transfer of control read: When receiving OUT-token in data stage (IN) At no data transfer: Nothing occurs. 0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when the exclusive buffer for SETUP is ready state (enabled to be read) on USB HUB/Endpoint 10. "0" can be set by software, but "1" cannot be set. 0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when control transfer error occurs on USB HUB/Endpoint 10. This bit is cleared to "0" by the hardware when receiving SETUP token. "0" can be set by software, but "1" cannot be set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 OO
CTEND10
USB HUB/Endpoint 10 control transfer completion interrupt bit
0
0
OO
CTSTS10
USB HUB/Endpoint 10 status stage transition interrupt bit
0
0
OO
BSRDY10
USB HUB/Endpoint 10 SETUP buffer ready interrupt bit
0
0
OO
ERR10
USB HUB/Endpoint 10 error interrupt bit
0
0
OO
b7:b5
Not used
-
-
OO
-: State remaining
Fig. 78 Structure of EP10 interrupt source register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
00
0
EP10 byte number register (EP10BYT) [address 001E16]
Bit symbol BBYT10 [3:0] b7:b4
Bit name
Function
Transmit/receive byte number bit OUT : The received byte number is automatically set. IN : Set the transmitting byte number. Write 0 when writing. Not used 0 is read when reading.
At reset RW H/W S/W 0 -- OO -- -- OO
--: State remaining
Fig. 79 Structure of EP10 byte number register
b7
b0
0
00
EP10 buffer area set register (EP10BUF) [address 0FED16]
Bit symbol BADD10 [4:0]
Bit name EP10 beginning address set bit
Function Set the beginning address of EP10's buffer area. (32-byte unit) b4b3b2b1b0 0 0 0 1 0 : 004016 0 0 0 1 1 : 006016 .............. 1 1 1 1 0 : 03C016 1 1 1 1 1 : 03E016 Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b5
Not used
-
-
OO
-: State remaining
Fig. 80 Structure of EP10 buffer area set register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(6) Endpoint 11
b7 b0
0
0
0
0
0 EP11 set register (EP11CFG) [address 001916]
Bit symbol b2:b0 SQCL11 Not used
Bit name
Function Write "0" when writing. "0" is read when reading. 0 : Toggle bit clear disabled 1 : Writing "1" clears the toggle bit and DATA0 is used as the next data PID. "0" is always read when reading. Write "0" when writing. "0" is read when reading. 0 : IN transfer disabled 1 : IN (Data is transmitted to the host.) Write "0" when writing. "0" is read when reading. 0 : Transfer disabled 1 : Interrupt transfer
At reset RW H/W S/W - - OO 0 -
Sequence toggle bit clear bit
b4 DIR11 b6 TYP11
Not used Transfer direction bit Not used Transfer type bite
- 0 - 0
- - - -
OO OO OO OO
-: State remaining
Fig. 81 Structure of EP11 set register
b7
b0
000
0
0
0
EP11 control register 1 (EP11CON1) [address 001A16]
Bit symbol PID11 [1:0]
Bit name Response PID bit
Function b1 b0 0 0 : NAK 0 1 : Automatic response (NAK, DATA0, DATA1) 1 X : STALL Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b2
Not used
-
-
OO
-: State remaining
Fig. 82 Structure of EP11 control register 1
b7
b0
0
0
0
00
0
0
EP11 control register 2 (EP11CON2) [address 001B16]
Bit symbol B0VAL11 b7:b1
Bit name Buffer 0 status bit Not used
At reset RW H/W S/W - OO This bit set to "1" shows the transmitting data is in a set 0 state (SIE is possible to read). - - OO Write "0" when writing. "0" is read when reading. Function -: State remaining
Fig. 83 Structure of EP11 control register 2
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
000
0000
EP11 interrupt source register (EP11REQ) [address 001D16]
Bit symbol B0RDY11
Bit name USB HUB/Endpoint 1 buffer 0 ready interrupt bit
Function 0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when the buffer is ready state (enabled to be read/written) on USB HUB/Endpoint 1. "0" can be set by software, but "1" cannot be set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W OO 0 0
b7:b1
Not used
-
-
OO
-: State remaining
Fig. 84 Structure of EP11 interrupt source register
b7
b0
0
00
000
0
EP11 byte number register (EP11BYT0) [address 001E16]
Bit symbol B0BYT11 b7:b1
Bit name Transmit byte number bit Not used
Function IN : Set the transmitting byte number. Write 0 when writing. 0 is read when reading.
At reset RW H/W S/W 0 -- OO -- -- OO
--: State remaining
Fig. 85 Structure of EP11 byte number register
b7
b0
0
00
EP11 buffer area set register (EP11BUF) [address 0FED16]
Bit symbol BADD11 [4:0]
Bit name EP11 beginning address set bit
Function Set the beginning address of EP11's buffer area. (32-byte unit) b4b3b2b1b0 0 0 0 1 0 : 004016 0 0 0 1 1 : 006016 .............. 1 1 1 1 0 : 03C016 1 1 1 1 1 : 03E016 Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b5
Not used
-
-
OO
-: State remaining
Fig. 86 Structure of EP11 buffer area set register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
HUB FUNCTION
The 38K2 Group has a HUB Function Control Circuit (HUBFCC) that offers easy implementation of USB-hub functions (signal repeat and bus state detection). This circuit is in compliance with USB Specification Version 2.0 Full-Speed/Low-Speed Transfer Modes (12 Mbps/1.5 Mbps, equivalent to Version 1.1). The HUBFCC operates with two external down-ports and one internal down-port, which is utilized by the USB addresses of the built-in peripherals, enabling management of a total of three downports independently. A dedicated circuit automatically performs the bus state change detection and error detection needed for the sequence management of the hub repeater circuit, data repeat function, and down-port status management. This dedicated control circuit ensures the user easy development of a program or timing design.
Each down-port register can be controlled by USB commands using USB addresses for HUB functions or detecting changes in the bus state of down-ports. The HUBFCC is also equipped with a remote wakeup signal transfer function for use during global resume as other special signals management. The HUBFCC generates an interrupt to the CPU when detecting a down-port state change (1 vector, 10 sources). The flexibility of the indispensable yet wide-ranging HUBFCC structure and an external interrupt function and I/O ports implemented in the standard features of this MCU enable the power supply management essential for USB-HUB functions and also allow users to easily and effortlessly configure their optimum system.
38K2 Group
CPU
USB
Up-port (USB host)
HUB
Internal downport
External down-port (USB device)
External down-port (USB device)
Fig. 87 HUB functions
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
HUB Function Control Circuit Block Diagram
The HUB function control circuit, as show in the diagram below, consists of the following blocks. (1) HUB repeater block (2) Down-port control block (3) CPU interface block (CIF)
HUB Function Control Circuit
HUB repeater block
USB transceiver
D2-
D0+ D0-
CPU
CIF
Down-port control block
USB down-port 1 transceiver D1+ D1-
USB Down-port 2 transceiver D2+
Fig. 88 HUB function control circuit block diagram
(1) HUB repeater block The HUB repeater block, consisting of the circuits listed below, processes the HUB repeater function sequence. The HUB repeater is ready for operation after enabling the USB module (USBE = "1"). *Repeater circuit (detects SOP/EOP signal) *Frame-time circuit (synchronizes to SOF signal and manages frames in 1 ms) *Receiver circuit (manages up-port states) *Transmitter circuit (controls up-port outputs) (2) Down-port control block The down-port control block, consisting of the circuits listed below, performs down-port controls under supervision of the HUB repeater state operation. *Down-port sequencer circuit *Down-port state change detect circuit
(3) CPU interface block (CIF) The CPU interface block performs the following processes. *Control of repeater/down-port states through registers. *Generates interrupt signal *Controls internal bus interface
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
USB Down-port Peripheral Circuit Setting
The USB down-port peripheral circuits can be set with the downstream port control register (address 0FF916). Figures 89 and 90 show the circuit block diagrams.
Low Speed
PCON11 PCON10
Full Speed
D1+
27
PCON11 PCON10
PCON11 PCON10
15 k
HUB Module
PCON11
+ -
PCON11 PCON10
Full Speed
D1-
27
PCON11 PCON10
Low Speed
15 k
PCON11 PCON10
Fig. 89 Block diagram of USB down-port peripheral circuits (D1+, D1-)
Low Speed
PCON21 PCON20
Full Speed
D2+
27
PCON21 PCON20
PCON21 PCON20
15 k
HUB Module
PCON21
+ -
PCON21 PCON20
Full Speed
D2-
27
PCON21 PCON20
Low Speed
15 k
PCON21 PCON20
Fig. 90 Block diagram of USB down-port peripheral circuits (D2+, D2-)
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
HUB Interrupt Function
The HUB function control circuit has one interrupt request consisting of 10 interrupt sources each of which can be determined through the interrupt source register. Table 8 shows the HUB interrupt sources.
Table 8 HUB interrupt sources Interrupt request bit (IREQ2: Address 003D16) USB HUB HUB interrupt bit (HUBIREQ: Address 002916) DP1 Interrupt source At HUB down-port 1 state change detected: *Disconnected state detected *Connected state detected *Port error state detected *Resume signal detected *Bus state change detected At HUB down-port 2 state change detected: *Disconnected state detected *Connected state detected *Port error state detected *Resume signal detected *Bus state change detected
DP2
[DPXREG1]
[HUBIREQ]
[HUBICON]
[DP1REQ] PTDIS1 PTCON1 PTERR1 PTRSM1 PTCHG1 DP1E DP1 USB HUB interrupt request
[DP2REQ] PTDIS2 PTCON2 PTERR2 PTRSM2 PTCHG2 DP2 DP2E
Fig. 91 USB HUB interrupt control
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
HUB Register List
The HUB register list is shown below.
Address
Register Name
SYMBOL
USB SFR bit7 HRWUE HRWU bit6 bit5 bit4 bit3 bit2 bit1 DP2E DP2 bit0 DP1E DP1 DPIDX
002816 002916 002A16 002B16 002C16 002D16 (1) HUB port 1 002B16 002C16 002D16 (2) HUB port 2 002B16 002C16 002D16
HUB interrupt source enable register HUB interrupt source register HUB downstream port index register HUB port field register 1 HUB port field register 2 HUB port field register 3
HUBICON HUBIREQ HUBINDEX DPXREG1 DPXREG2 DPXREG3
DP1 interrupt source register DP1 control register DP1 status register
DP1REQ DP1CON DP1STS
DSLSPD1
DSRMOD1
DSRSMO1
PTCHG1 DSRSTO1
PTRSM1 DSDETE1
PTERR1 DSSUSP1
PTCON1 DSPTEN1 D1PLUS
PTDIS1 DSCONN1 D1MINUS
DP2 interrupt source register DP2 control register DP2 status register
DP2REQ DP2CON DP2STS
DSLSPD2
DSRMOD2
DSRSMO2
PTCHG2 DSRSTO2
PTRSM2 DSDETE2
PTERR2 DSSUSP2
PTCON2 DSPTEN2 D2PLUS
PTDIS2 DSCONN2 D2MINUS
0FF916
Downstream port control register
DPCTL
PCON2[1:0]
PCON1[1:0]
: Not used
Fig. 92 HUB related registers
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
HUB Related Registers
The HUB related registers are shown below.
b7
b0
0
00
00
HUB interrupt source enable register (HUBICON) [address 002816]
Bit symbol DP1E DP2E b6:b2 HRWUE
Bit name HUB downstream port 1 interrupt enable bit HUB downstream port 2 interrupt enable bit Not used HUB upstream port remotewakeup output enable bit
Function 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled Write "0" when writing. "0" is read when reading. 0 : Disabled 1 : Enabled
At reset RW H/W S/W 0 - OO 0 - 0 - - - OO OO OO
-: State remaining
Fig. 93 Structure of HUB interrupt source enable register
b7
b0
0
000
0
HUB interrupt source register (HUBIREQ) [address 002916]
Bit symbol DP1
Bit name HUB downstream port 1 interrupt bit
DP2
HUB downstream port 1 interrupt bit
b6:b2 HRWU
Not used HUB upstream port remote -wakeup output enable bit
At reset RW H/W S/W - O This bit is set to "1" when any one of DP1 interrupt 0 source register's bits at least is set to "1". This bit is cleared to "0" by clearing DP1 interrupt source register to "0016". Writing to this bit causes no state change. - O This bit is set to "1" when any one of DP2 interrupt 0 source register's bits at least is set to "1". This bit is cleared to "0" by clearing DP2 interrupt source register to "0016". Writing to this bit causes no state change. - - OO Write "0" when writing. "0" is read when reading. 0 - OO 0 : Remote-wakeup being not output 1 : Remote-wakeup being output This bit change is not for a interrupt source. When detecting 2.5 s or more of K-signal on a downstream port in Hub-suspended state, K-signal is output on from a upstream port and this bit is simultaneously set to "1". "0" can be set by software, but "1" cannot be set. Function -: State remaining
Fig. 94 Structure of HUB interrupt source register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
0
00
00
0
HUB downstream port index register (HUBINDEX) [address 002A16]
Bit symbol DPIDX b7:b1
Bit name HUB downstream port index bit Not used
Function 0 : HUB downstream port 1 1 : HUB downstream port 2 Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO - - OO
-: State remaining
Fig. 95 Structure of HUB downstream port index register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(1) Downstream port 1
b0
b7
0
00
DP1 interrupt source register (DP1REQ) [address 002B16]
Bit symbol PTDIS1
Bit name Downstream port 1 disconnect detection interrupt bit
Function
PTCON1
PTERR1
PTRSM1
PTCHG1
b7:b5
0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when detecting a bus-disconnect state (2.5 s or more of SE0) on a downstream port 1 in DSCONN1 = "1". "0" can be set by software, but "1" cannot be set. Downstream port 1 connect 0: No interrupt request issued detection interrupt bit 1: Interrupt request issued This bit is set to "1" when detecting a bus-connect state (2.5 s or more of J- or K- state) on a downstream port 1 in DSCONN1 = "0". "0" can be set by software, but "1" cannot be set. Downstream port 1 port error 0: No interrupt request issued interrupt bit 1: Interrupt request issued This bit is set to "1" when an error occurs on a downstream port 1. "0" can be set by software, but "1" cannot be set. Downstream port 1 resume 0: No interrupt request issued interrupt bit 1: Interrupt request issued This bit is set to "1" when detecting a resume signal on a downstream port 1 in the condition of HUB suspended or port suspended state. "0" can be set by software, but "1" cannot be set. Downstream port 1 bus-change 0: No interrupt request issued detection interrupt bit 1: Interrupt request issued This bit is set to "1" when detecting a bus-change of a downstream port 1 in the condition of HUB suspended state. It is also "1" in the internal clock halted. "0" can be set by software, but "1" cannot be set. Not used Write "0" when writing. "0" is read when reading.
At reset R W H/W S/W 0 - OO
0
-
OO
0
-
OO
0
-
OO
0
-
OO
-
-
OO
-: State remaining
Fig. 96 Structure of DP1 interrupt source register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
DP1 control register (DP1CON) [address 002C16]
Bit symbol DSCONN1 DSPTEN1
Bit name Downstream port 1 connect bit
Function
DSSUSP1
DSDETE1
DSRSTO1 DSRSMO1
DSRMOD1
DSLSPD1
0 : Disconnect ; PTCON1 interrupt enabled 1 : Connect ; PTDIS1 interrupt enabled Downstream port 1 enable bit 0 : Downstream port 1 disabled 1 : Downstream port 1 enabled ; This bit is cleared when an interrupt of PTDIS1 or PTERR1 is generated. Downstream port 1 suspend bit 0 : No port suspended 1 : Port suspended; This bit is cleared when an interrupt of PTDIS1 or PTRSM1 is generated. Downstream port 1 connect0 : Connect/disconnect-state detection disabled ; PTCON1 state detection enable bit and PTDIS1 interrupts disabled 1 : Connect/disconnect-state detection enabled ; This bit is cleared when an interrupt of PTCON1, PTDIS1 or PTERR1 is generated. Downstream port 1 SE0 signal 0 : Being not output transmit bit 1 : SE0 signal being output Downstream port 1 resume 0 : Being not output signal transmit bit 1 : K-signal being output ; When writing "0", a low-speed EOP is output and then a transition to being not output occurs. Downstream port 1 bus-state 0 : Mode where a downstream port 1 bus-state is read, read mode control bit using RD signal 1 : Mode where a downstream port 1 bus-state is read, using EOF2 signal (internal signal) Downstream port 1 USB transfer 0 : Full-speed mode (12MHz) 1 : Low-speed mode (1.5 MHz)
At reset RW H/W S/W - OO 0 0 - OO
0
-
OO
0
-
OO
0 0
- -
OO OO
0
-
OO
0
-
OO
-: State remaining
Fig. 97 Structure of DP1 control register
b7
b0
0
0
00
00
DP1 status register (DP1STS) [address 002D16]
Bit symbol D1MINUS
Bit name D1- signal bit
D1PLUS
D1+ signal bit
b7:b2
Not used
At reset RW H/W S/W In- O In DSRMOD1 = "0", a downstream port 1 bus-state is Indefinite definite read, using RD signal. In DSRMOD1 = "1", a downstream port 1 bus-state is read, using EOF2 signal (internal signal). In- O In DSRMOD1 = "0", a downstream port 1 bus-state is Indefinite definite read, using RD signal. In DSRMOD1 = "1", a downstream port 1 bus-state is read, using EOF2 signal (internal signal). - - OO Write "0" when writing. "0" is read when reading. Function -: State remaining
Fig. 98 Structure of DP1 status register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(2) Downstream port 2
b7 b0
0
00
DP2 interrupt source register (DP2REQ) [address 002B16]
Bit symbol PTDIS2
Bit name Downstream port 2 disconnect detection interrupt bit
Function
PTCON2
PTERR2
PTRSM2
PTCHG2
b7:b5
0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when detecting a bus-disconnect state (2.5 s or more of SE0) on a downstream port 2 in DSCONN2 = "1". "0" can be set by software, but "1" cannot be set. Downstream port 2 connect 0: No interrupt request issued detection interrupt bit 1: Interrupt request issued This bit is set to "1" when detecting a bus-connect state (2.5 s or more of J- or K- state) on a downstream port 2 in DSCONN2 = "0". "0" can be set by software, but "1" cannot be set. Downstream port 2 port error 0: No interrupt request issued interrupt bit 1: Interrupt request issued This bit is set to "1" when an error occurs on a downstream port 2. "0" can be set by software, but "1" cannot be set. Downstream port 2 resume 0: No interrupt request issued interrupt bit 1: Interrupt request issued This bit is set to "1" when detecting a resume signal on a downstream port 2 in the condition of HUB suspended or port suspended state. "0" can be set by software, but "1" cannot be set. Downstream port 2 bus-change 0: No interrupt request issued detection interrupt bit 1: Interrupt request issued This bit is set to "1" when detecting a bus-change of a downstream port 2 in the condition of HUB suspended state. It is also "1" in the internal clock halted. "0" can be set by software, but "1" cannot be set. Not used Write "0" when writing. "0" is read when reading.
At reset R W H/W S/W 0 - OO
0
-
OO
0
-
OO
0
-
OO
0
-
OO
-
-
OO
-: State remaining
Fig. 99 Structure of DP2 interrupt source register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
DP2 control register (DP2CON) [address 002C16]
Bit symbol DSCONN2 DSPTEN2
Bit name Downstream port 2 connect bit
Function
DSSUSP2
DSDETE2
DSRSTO2 DSRSMO2
DSRMOD2
DSLSPD2
0 : Disconnect ; PTCON2 interrupt enabled 1 : Connect ; PTDIS2 interrupt enabled Downstream port 2 enable bit 0 : Downstream port 2 disabled 1 : Downstream port 2 enabled ; This bit is cleared when an interrupt of PTDIS2 or PTERR2 is generated. Downstream port 2 suspend bit 0 : No port suspended 1 : Port suspended; This bit is cleared when an interrupt of PTDIS2 or PTRSM2 is generated. Downstream port 2 connect0 : Connect-state detection disabled ; PTCON2 and PTDIS2 state detection enable bit interrupts disabled 1 : Connect-state detection enabled ; This bit is cleared when an interrupt of PTCON2, PTDIS2 or PTERR2 is generated. Downstream port 2 SE0 signal 0 : Being not output transmit bit 1 : SE0 signal being output Downstream port 2 resume 0 : Being not output signal transmit bit 1 : K-signal being output ; When writing "0", a low-speed EOP is output and then a transition to being not output occurs. Downstream port 2 bus-state 0 : Mode where a downstream port 2 bus-state is read, read mode control bit using RD signal 1 : Mode where a downstream port 2 bus-state is read, using EOF2 signal (internal signal) Downstream port 2 USB transfer 0 : Full-speed mode (12MHz) speed select bit 1 : Low-speed mode (1.5 MHz)
At reset RW H/W S/W - OO 0 0 - OO
0
-
OO
0
-
OO
0 0
- -
OO OO
0
-
OO
0
-
OO
-: State remaining
Fig. 100 Structure of DP2 control register
b7
b0
0
0
00
00
DP2 status register (DP2STS) [address 002D16]
Bit symbol D2MINUS
Bit name D2- signal bit
D2PLUS
D2+ signal bit
b7:b2
Not used
At reset RW H/W S/W InIn- O In DSRMOD2 = "0", a downstream port 2 bus-state is definite definite read, using RD signal. In DSRMOD2 = "1", a downstream port 2 bus-state is read, using EOF2 signal (internal signal). In- O In DSRMOD2 = "0", a downstream port 2 bus-state is Indefinite definite read, using RD signal. In DSRMOD2 = "1", a downstream port 2 bus-state is read, using EOF2 signal (internal signal). - - OO Write "0" when writing. "0" is read when reading. Function -: State remaining
Fig. 101 Structure of DP2 status register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
0
00
Downstream port control register (DPCTL) [address 0FF916]
Bit symbol PCON1 [1:0]
Bit name Downstream port 1 function select bit
Function b1b0 0 0 : USB port (D1-, D1+) OFF, USB difference amplifier OFF 0 1 : USB exclusive input port (D1-, D1+), USB difference amplifier OFF 1 0 : Full-speed port (D1-, D1+), USB difference amplifier ON 1 1 : Low-speed port (D1-, D1+), USB difference amplifier ON b3b2 0 0 : USB port (D2-, D2+) OFF, USB difference amplifier OFF 0 1 : USB exclusive input port (D2-, D2+), USB difference amplifier OFF 1 0 : Full-speed port (D2-, D2+), USB difference amplifier ON 1 1 : Low-speed port (D2-, D2+), USB difference amplifier ON Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W - OO 0
PCON2 [1:0]
Downstream port 2 function select bit
0
-
OO
b7:b4
Not used
-
-
OO
-: State remaining
Fig. 102 Structure of Downstream port control register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
EXTERNAL BUS INTERFACE (EXB)
The external bus interface (EXB) controls the data transfer between the external MCU and the 38K2 group's CPU or its
memory (multichannel RAM). The external bus interface is shown below.
38K2 group
CPU CPU channel
External MCU
Program ROM
Peripheral functions
[Interrupt type] External bus interface (EXB) Memory channel [Direct RAM access type] Multichannel RAM USB USB bus (USB host)
Fig. 103 External bus interface qCPU channel It is a data transfer course by the interrupt processing between the external MCU and the 38K2 group's CPU. qMemory channel It is a data transfer course by direct RAM access of the memory channel controller between the external MCU and the 38K2 group's memory (multichannel RAM)
qData transfer of memory channel When the burst mode is selected with the burst bit of the memory channel operation mode register, data transfer can be carried out at the highest speed. After the external bus interface detects a rise of external read signal/write signal and synchronizes it with the internal clock , it completes the data transfer between the transmit/ receive buffer and the multichannel RAM in two clocks. However, the waiting time of two clocks at a maximum is generated to access the multichannel RAM in USB being operating because the USB has priority to access. Therefore, it is necessary to set up the access interval which fills the following timing with the external MCU bus side. In = 8 MHz, data transfer at about 2 Mbytes/second is possible at a maximum. When there is access simultaneously from the USB, it is about 1.3 Mbytes/second. In = 6 MHz, data transfer at about 1.5 Mbytes/second is possible at a maximum. When there is access simultaneously from the USB, it is about 1 Mbytes/second.
Address CS, RD, WR, DMA acknowledge Access cycle time from externals: *3 clocks or more of + Signal delay time + Data setup time of external MCU in USB inactive *5 clocks or more of + Signal delay time + Data setup time of external MCU in USB active
Fig. 104 Data transfer timing of memory channel
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
EXB Pin Assignment
The external bus interface (EXB) pins are shown bellow. The 38K2 group can transmit/receive a data to/from an external MCU, using the following signals: *Control input signal ................ 4 (ExCS, ExA0, ExRD, ExWR) *Data input/output pin .............. 8 (DQ0 to DQ7) *Interrupt output signal ............ 1 (ExINT) Additionally, the DMA interface signal and the buffer status read select signal of 38K2 group can be set up per one by the program. *Control input signal ................ 3 (ExTC, ExDACK, ExRD, ExA1) *Interrupt output signal ............ 1 (ExDREQ)
38K2 group
External bus interface (EXB)
P34/ExCS [ L ] P37/ExA0 [address] P36/ExRD [ L ] P35/ExWR [ L ] P10/DQ0/AN0--P17/DQ7/AN7 [data] P33/ExINT [ L ]
External pins External chip select External address External read External write External data External interrupt
CPU
8
DMA request Terminal count DMA acknowledge Status read select
P40/ExDREQ/RxD [ L ] P42/ExTC/SCLK [ L ] P41/ExDACK/TxD [ L ] P43/ExA1/SRDY [ H ]
Multichannel RAM
: Functions as normal ports just after reset.
Fig. 105 External bus interface (EXB) pin assignment
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
EXB Block Diagram
The block diagram of external bus interface (EXB) is shown below. The external bus interface (EXB) consists of: (1) External I/O interface part (2) CPU interface part (3) Internal memory interface part (4) Transmit/Receive data buffer part
External I/O interface
Configuration signal External I/O configuration register
CPU interface
Index register EXB interrupt source enable register Decoder data selector
Cch_WR
External MCU bus P34/ExCS
Cch_RD TxB_RDY RxB_RDY
CPU channel controller
Command decoder
P37/ExA0 P36/ExRD P35/ExWR
Memory channel control
Mch_RD Mch_WR Mch_TC mRX_enb mTX_enb
Memory channel status
Internal memory interface
Memory channel operation mode register Memory address counter Memory address
P41/ExDACK/TxD P42/ExTC/SCLK P43/ExA1/SRDY
P33/ExINT
Output selector
End address register
Mch_req FIFO_stt
P40/ExDREQ/RxD
Memory channel controller
Request acknowledge
MRDsel
Memory channel transmit buffer control
stt_sel ExOE Buf_WR
Transmit/Receive data buffer
Memory read data Transmit buffer register
P10/DQ0/AN0- P17/DQ7/AN7
Memory write data Receive buffer register
: Functions as normal ports just after reset.
Fig. 106 Block diagram of external bus interface (EXB)
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Multichannel RAM
HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(1) External I/O Interface Part
The external I/O interface part consists of a command decoder and an output selector. A command decoder generates the following signals to each unit. qCPU interface part *CPU channel read (Cch_RD) *CPU channel write (Cch_WR) qInternal memory interface part *Memory channel read (Mch_RD) *Memory channel write (Mch_WR) *Memory channel terminal count (Mch_TC) qTransmit/receive data buffer part *Buffer write (Buf_WR) qExternal I/O interface part *Status selection (stt_sel) *Output enable (ExOE) Access to the CPU channel can be controlled only by setup of external signals. Access to the memory channel can be controlled by the value of the external I/O configuration register and the state (mRX_enb, mTX_enb signals) of the internal memory interface part. The output selector has the function which selects from the state of CPU channel (TxB_RDY and RxD_RDY) and the state of memory channel (Mch_req) as the signal assigned to P33/ ExINT pin and P40/ExDREQ/RxD pin.
(2) CPU Interface Part
The CPU interface part consists of the decoder/data selector of the CPU channel, the CPU write register and CPU channel controller qDecoder/data selector of CPU channel A write operation to the CPU register is performed by generating a write signal for each register with an address decode signal and a write signal. A read operation from the CPU register is performed by generating an output enable signal of the internal data bus with an module select signal and a read signal and generating a select signal for each register with an address decode signal. qCPU write register There are three CPU write registers as follows: *EXB interrupt source enable register *Index register *External I/O configuration register The EXB interrupt source register is a read-only register. A status signal of the CPU channel controller and a status signal of the memory channel controller in the internal memory interface part are generated. qCPU channel controller The CPU channel controller generates the following signals, using bits 0 and 1 (RXB_ENB, TXB_ENB) of EXB interrupt source enable register. *Memory channel transmitting buffer control signal (MRD_sel), generated in the internal memory interface part *CPU channel command signal (Cch_RD, Cch_WR), generated in the external I/O interface part *Signals RxB_RDY/RxB_full and TxB_RDY/TxB_empty, generated with read/write signals from the CPU channel
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(3) Internal Memory Interface Part
The internal memory interface part consists of the CPU register and the memory channel controller. qCPU register The CPU register consists of the follows: *Memory channel operation mode register *Memory address counter *End address register The CPU can set the beginning address into the memory address counter when the memory channel operation enable bit (MC_ENB) of EXB interrupt source enable register is "0". When this bit is "1", the write operation from the CPU is invalid and each access from the external bus causes count-up operation. qMemory channel controller The CPU register consists of the follows: *Main sequencer *Internal memory request signal generating circuit *External memory channel request signal generating circuit *Address end detection circuit *Terminal end input processing circuit
(5) External Pin
The external bus interface has the following pins to connect with an external MCU bus. *Chip select ........................... P34/ExCS *Address ................................ P37/ExA0 *Data ...................................... P10/DQ0/AN0 to P17/DQ7/AN7 *Read .................................... P36/ExRD *Write ..................................... P35/ExWR *Interrupt request .................. P33/ExINT It also has the following pins to connect with an external DMAC. Each pin can be programmed for an ordinary port function or a DMA interface pin function. *DMA request ........................ P40/ExDREQ/RxD *DMA acknowledgment ......... P41/ExDACK/TxD *Terminal count ..................... P42/ExTC/SCLK It also has the status read select pin (P43/ExA1/SRDY pin) to confirm a ready status of the data buffer from an external MCU bus This pin functions as a port just after reset. The status read select function can be set by a program. *Status read select ................ P43/ExA1/SRDY qCPU channel: Communication with 38K2 group CPU When a read/write operation is performed from an external MCU bus in address signal ExA0 = "H", the interrupt is generated and the 38K2 group CPU can confirm its access. The 38K2 group CPU judges the interrupt source and it starts a data transmission/reception with an external MCU bus. qMemory channel: Communication with 38K2 group memory multichannel RAM When a read/write operation is performed from an external MCU bus in address signal ExA0 = "L", access to the multichannel RAM is performed. Then an address of the multichannel RAM is made by the external bus interface and it is increased at each access completion. Consequently, FIFO access is performed. Even if a read/write operation is performed in DACK = "L" instead of ExCS = "L" and ExA0 = "L", FIFO access to the multichannel RAM is performed. The beginning address and the end address must be set by the CPU in advance.
(4) Transmit/Receive Data Buffer Part
The transmit/receive data buffer part consists of the 8-bit transmit buffer register (TXBUF) and the 8-bit receive buffer register (RXBUF). Both CPU channel and memory channel use the same transmit buffer register/receive buffer register to transfer a data to an external MCU bus.
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
qP33/ExINT pin Any one of the following signals for this pin can be selected: *TxB_RDY (transmit buffer ready) output *RxB_RDY (receive buffer ready) output *Mch_req (memory channel request) output Either TxB_RDY or RxB_RDY is normally selected. The memory channel request is for an access request signal to the memory channel. In a small system, a data transfer processing to the internal memory is performed in the interrupt routine. According to that situation, the 38K2 group has the function automatically to switch an interrupt factor attached on the interrupt pin by program. qP40/ExDREQ/RxD pin This pin is a port at the initial state. Which signal can be set by program. *RxB_RDY (receive buffer ready) output *Mch_req (memory channel request) output Mch_req of DMAC is normally selected. The output method of the memory channel request signal depends on the burst bit (BURST) of memory channel operation mode register. When the burst bit is "0", this signal is periodically output at each 1-byte transfer. (See Figures 124 and 127.) When the burst bit is "1", this signal is continuously output while the memory address counter is counting from the beginning address to the end address (See Figures 125 and 128.) qP41/ExDACK/TxD pin This pin is a port at the initial state. The DMA acknowledge signal can be set by program. The DMA acknowledge signal DACK = "L" is the same state as that of CS = "L" and A0 = "L". Access to multichannel RAM is started by a rise of read signal or write signal which is set during this term. Note: If the DMA acknowledge signal and the chip select signal are simultaneously active (DACK = "L" and CS = "L"), also set the address signal A0 to "L". If A0 is "H", the memory channel and the CPU channel are activated simultaneously and it might cause some error.
qP42/ExTC/SCLK pin This pin is a port at the initial state. The terminal count signal can be set by program. If the terminal count signal is set at one bus cycle while a memory channel operation write is being performed, the 38K2 group confirms that its bus cycle is the write cycle of the last data and sets the memory channel status bits to "112", and the interrupt is generated and the memory channel operation ends even if the memory address counter has not reached the end address. The CPU can obtain the last address where the data is written by reading out the value of memory address counter. (See Figure 126.)
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
EXB Register List
The EXB register list is shown below.
Address
Register Name
SYMBOL
EXB SFR bit7 bit6 bit5 bit4 bit3 bit2 MC_ENB MC_STS[1:0] 0 0 0 0 LOW_WIN[7:0] HIGH_WIN[7:0] 0 bit1 TXB_ENB TXB_EMPTY INDEX[2:0] bit0 RXB_EMB RXB_FULL
003016 003116 003316 003416 003516
EXB interrupt source enable register EXB interrupt source register EXB index register Register window 1 (low) Register window 2 (high)
EXBICON EXBIREQ EXBINDEX EXBREG1 EXBREG2
: Not used 0 : "0" fixed
Fig. 107 EXB related registers (1) *EXB interrupt source enable register This register enables/disables access from an external bus and an internal interrupt. *EXB interrupt source register This register indicates the state of CPU channel's transmit/receive buffer register and the memory channel. The same value can be read out from the external MCU bus by using the buffer status read select signal (A1 pin = "H"). *EXB index register/Register windows 1, 2 The accessible register is switched by treating addresses 003416 and 003516 as a register window depending on the value of EXB index register at address 003316.
Index 0016
low high low high
Register Name External I/O configuration register
SYMBOL EXBCFGL EXBCFGH
EXB SFR bit7 bit6 bit5 bit4 A1_CTR TC_CTR bit3 bit2 INT_CTR[2:0] DAK_CTR[1:0] bit1 bit0 EXB_CTR DRQ_CTR[1:0]
0116
low high
Transmit/Receive buffer register
RXBUF/TXBUF --
At CPU read : RXBUF[7:0] At CPU write : TXBUF[7:0]
0216
low high
Memory channel ope- MCHMOD ration mode register -- Memory address counter MEMADL MEMADH End address register ENDADL ENDADH 0 0 0 0 0 0 0 0 END_A[7:0] 0 IM_A[7:0] 0
BURST
MC_DIR[1:0]
0316
low high
IM_A[10:8]
0416
low high
END_A[10:8]
: Not used 0 : "0" fixed
Fig. 108 EXB related registers (2) *External I/O configuration register This register selects the function of each pin. *Transmit/Receive buffer register This register consists of the receive buffer register (RXBUF) and the transmit buffer register (TXBUF) *Memory channel operation mode register This register sets the operation mode of the memory channel. *Memory address counter This is a counter to set the beginning address which FIFO accesses. This register is increased by access from the external MCU bus. *End address register This register is to set the end address which FIFO accesses.
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
EXB Related Registers
The EXB related registers are shown below.
b7
b0
00
0
0
0
EXB interrupt source enable register (EXBICON) [address 003016] (Note)
Bit symbol RXB_ENB TXB_ENB MC_ENB Bit name Function At reset RW H/W S/W 0 - OO 0 0 - - OO OO
b7:b3
CPU channel receive enable bit 0 : Operation disabled (Interrupt disabled) 1 : Operation enabled (Receive buffer full interrupt enabled) CPU channel transmit enable bit 0 : Operation disabled (Interrupt disabled) 1 : Operation enabled (Transmit buffer empty interrupt enabled) 0 : Operation disabled (Memory channel operation end Memory channel operation interrupt disabled) enable bit 1 : Operation enabled (Memory channel operation end interrupt disabled) Write "0" when writing. Not used "0" is read when reading.
-
-
OO
-: State remaining Note: Do not set each bit simultaneously.
Fig. 109 Structure of EXB interrupt source enable register
b7
b0
0
0
0
0
EXB interrupt source register (EXBIREQ) [address 003116] (Note 1)
Bit symbol RXB_FULL
Bit name Receive buffer full bit
Function 0 : Receive buffer empty 1 : Receive buffer full 0 : Transmit buffer full 1 : Transmit buffer empty b3b2 0 0 : Memory channel operation stopped 0 1 : Memory channel being operating; No external access 1 0 : Memory channel being operating; External accessing 1 1 : Memory channel operation end; Memory channel operation end interrupt generated Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 O-
(Note 3)
TXB_EMPTY Transmit buffer empty bit MC_STS [1:0] (Note 2) Memory channel status bits
0 0
0
(Note 4)
O- O-
0
b7:b4
Not used
-
-
OO
-: State remaining Notes 1: When the the ExA1 pin control bit of external I/O configuration register is "1", the external MCU bus can read this register contents by setting the ExA1 pin to "H". 2: The memory channel status bits indicate the status of memory channel. In MC_ENB = "0" these bits are always "002". When the memory channel operation ends, these bits are set to "112" and the memory channel operation end interrupt is generated. These bits can be read out during operation, so that it will show that whether the external MCU bus is accessing or not. 3: This bit is cleared to "0" when reading the transmit/receive buffer register in the CPU channel receive enable bit = "1" or when the CPU channel receive enable bit is "0". 4: This bit is cleared to "0" when writing to the transmit/receive buffer register in the CPU channel transmit enable bit = "1" or when the CPU channel transmit enable bit is "0".
Fig. 110 Structure of EXB interrupt source register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
0
0
00
EXB index register (EXBINDEX) [address 003316]
Bit symbol INDEX [2:0] Index bits
Bit name
b7:b3
Not used
At reset RW H/W S/W - OO The accessible register, using the register window, 0 depends on these index bits contents as follows: b2b1b0 0 0 0 : External I/O configuration register 0 0 1 : Transmit/Receive buffer register 0 1 0 : Memory channel operation mode register 0 1 1 : Memory address counter 1 0 0 : End address register 1 0 1 : Do not set. 1 1 0 : Do not set. 1 1 1 : Do not set. - - OO Write "0" when writing. "0" is read when reading. Function -: State remaining
Fig. 111 Structure of EXB index register
b7
b0
Register window 1 (EXBREG1) [address 003416]
Bit symbol LOW_WIN [7:0] -
Bit name
At reset RW H/W S/W In- O O The accessible register, using this register window, Independs on the EXB index register contents as definite definite follows: Index value "0016" : External I/O configuration register "0116" : Transmit/Receive buffer register "0216" : Memory channel operation mode register "0316" : Memory address counter "0416" : End address register Function
Fig. 112 Structure of Register window 1
b7
b0
Register window 2 (EXBREG2) [address 003516]
Bit symbol HIGH_WIN [7:0] -
Bit name
At reset RW H/W S/W In- O O The accessible register, using this register window, Independs on the EXB index register contents as definite definite follows: Index value : External I/O configuration register "0016" "0116" : Transmit/Receive buffer register : Memory channel operation mode register "0216" : Memory address counter "0316" : End address register "0416" Function
Fig. 113 Structure of Register window 2
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
0
0
Index = 0016 : External I/O configuration register (EXBCFGL) [address 003416]
Bit symbol EXB_CTR INT_CTR [2:0]
Bit name EXB pin control bit (Pins P10 to P17, P30 to P34) P33/ExINT pin control bit
Function 0 : Port 1 : EXB function pin Selects a signal of P33/ExINT pin. ON/OFF is programmed by each bit. An output logical sum of P33/ExINT pins set for ON are performed and it is output as an "L" active signal. b3b2b1 0 0 1 : RxB_RDY (RxBuf ready) output 0 1 0 : TxB_RDY (TxBuf ready) output 1 0 0 : Mch_req (Memory channel request) output Others : Do not set. 0 : Port 1 : A1 input (used to read status) Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO 0 - OO
A1_CTR b7:b5
P43/ExA1 pin control bit Not used
0 -
- -
OO OO
-: State remaining
Fig. 114 Index00[low]; Structure of External I/O configuration register
b7
b0
0
0
0
Index = 0016 : External I/O configuration register (EXBCFGH) [address 003516]
Bit symbol DRQ_CTR [1:0]
Bit name P40/ExDREQ/RxD pin control bit
Function b1b0 0 0 : Port 0 1 : Do not set. 1 0 : ExDREQ function; RxB_RDY (RxBuf ready) output 1 1 : ExDREQ function; Mch_req (Memory channel request) output Specifies P41/ExDACK/TxD pin function. Selects which mode; requiring read or write signal, or not requiring it for use of DMA acknowledge function. b3b2 0 0 : Port 0 1 : Do not set. 1 0 : ExDACK function; DMA acknowledge input (Mode for read and write signals used together) 1 1 :ExDACK function; DMA acknowledge input (Mode for read and write signals not required) 0 : Port 1 : ExTC (terminal count) input Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
DAK_CTR [1:0]
P41/ExDACK/TxD pin control bit
0
-
OO
TC_CTR b7:b5
P42/ExTC/SCLK pin control bit Not used
0 -
- -
OO OO
-: State remaining
Fig. 115 Index00[high]; Structure of External I/O configuration register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
Index =0116 : Transmit/Receive buffer register (RXBUF/TXBUF) [address 003416]
Bit symbol RXBUF/ TXBUF -
Bit name
At reset RW H/W S/W 0 - OO The data received from an external bus is written here at the rise timing of external write signal. The data transmitted to an external bus is written here at the timing of internal CPU write or memory write. Function
The receive buffer register (RXBUF) contents can be read out by reading to this address with the CPU. The data which the CPU has written to this address is stored in the transmit buffer register (TXBUF). However, do not perform write operation with the CPU to this address if the memory channel direction control bits of memory channel operation mode register is "102" (transmit mode) and the memory channel status bits of EXB interrupt source register are "012" or "102" (memory channel being operating).
Fig. 116 Index01[low]; Structure of Transmit/Receive buffer register
b7
b0
0
0
0
0
0
Index =0216 : Memory channel operation mode register (MCHMOD) [address 003416]
Bit symbol MC_DIR [1:0]
Bit name Memory channel direction control bit
Function b1b0 0 0 : Operation disabled 0 1 : Receive mode 1 0 : Transmit mode 1 1 : Do not set. 0 : Cycle mode (each byte transfer according to assertion or negation) 1 : Burst mode (continuous transfer till the terminal count) Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
BURST
Burst bit
0
-
OO
b7:b3
Not used
-
-
OO
-: State remaining
Fig. 117 Index02[low]; Structure of Memory channel operation mode register
b7
b0
Index = 0316 : Memory address counter (MEMADL) [address 003416]
Bit symbol IM_A [7:0] -
Bit name
At reset RW H/W S/W OO Register to set the low-order address of memory 0 - channel operation beginning. This contents are increased each time one memory access ends. Function
Fig. 118 Index03[low]; Structure of Memory address counter
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
0
0
0
0
0
Index = 0316 : Memory address counter (MEMADH) [address 003516]
Bit symbol IM_A [10:8] -
Bit name
b7:b3
Not used
At reset RW H/W S/W Register to set the high-order address of memory 0 - OO channel operation start. This contents are increased each time one memory access ends. Write "0" when writing. - - OO "0" is read when reading. Function -: State remaining
Fig. 119 Index03[high]; Structure of Memory address counter
b7
b0
Index = 0416 : End address register (ENDADL) [address 003416]
Bit symbol END_A [7:0] -
Bit name
At reset RW H/W S/W Register to set the low-order address of memory 0 - OO channel operation end. Function -: State remaining
Fig. 120 Index04[low]; Structure of End address register
b7
b0
0
0
0
0
0
Index = 0416 : End address register (ENDADH) [address 003516]
Bit symbol END_A [10:8] b7:b3 - Not used
Bit name
At reset RW H/W S/W OO Register to set the high-order address of memory 0 - channel operation end. Write "0" when writing. - - OO "0" is read when reading. Function -: State remaining
Fig. 121 Index04[high]; Structure of End address register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
EXB Operation Timing Diagram (1) CPU Channel Receiving Operation
CPU channel receiving operation is shown bellow.
Address ExA0 Chip select ExCS Read ExRD A0 = "1" CS = "0"
A0 = "1" CS = "0"
Write ExWR Data DQ0 to DQ7 #0 #1
Internal clock Interrupt request ExINT [RxB_RDY] Receive buffer full bit RXB_FULL Receive buffer RXBUF Transmit buffer TXBUF CPU channel receive enable bit RXB_ENB Receive buffer read #0 #1 RxB_RDY RxB_RDY
External I/O configuration register EXB interrupt source enable register
INT_CTR[3:1] (P33/ExINT pin control) = 0012 (RxB_RDY interrupt)
RXB_ENB (CPU channel receive enable) = "1" (Receive buffer full interrupt enabled)
Writing the command for enabling operation makes RXB_RDY assertion and the P33/ExINT pin goes to "L".
If the CPU channel receive enable bit (RXB_ENB) is "0", both the receive buffer full bit (RXB_FULL) and the receive buffer ready signal (RxB_RDY) to an external are inactive.
When a write operation is performed from an external MCU bus in the condition of ExCS = "L" and WxA0 = "H", it will result in as follows:
* The data is written into the receive buffer (RXBUF) * Negation of the receive buffer ready signal (RxB_RDY) to an external is made * The RXB_FULL interrupt is generated.
When the CPU reads out the receive buffer (RXBUF) with an interrupt processing program, the receive buffer full bit (RXB_FULL) is cleared to "0".
Fig. 122 CPU channel receiving operation
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(2) CPU Channel Transmitting Operation
CPU channel transmitting operation is shown bellow.
Address ExA0 Chip select ExCS Read ExRD Write ExWR Data DQ0 to DQ7
A0 = "1" CS = "0"
'
A0 = "1" CS = "0"
#0
#1
Internal clock Interrupt request ExINT [TxB_RDY] Transmit buffer empty bit TXB_EMPTY Receive buffer RXBUF Transmit buffer TXBUF CPU channel transmit enable bit TXB_ENB Transmit data write #0 #1 TxB_RDY TxB_RDY
'
External I/O configuration register EXB interrupt source enable register
INT_CTR[3:1] (P33/ExINT pin control) = 0102 (TxB_RDY interrupt)
TXB_ENB (CPU channel transmit enable) = "1" (Transmit buffer empty interrupt enabled)
Writing the command for enabling operation generates TXB_EMPTY interrupt.
If the CPU channel transmit enable bit (TXB_ENB) is "0", both the transmit buffer empty bit (TXB_EMPTY) and the transmit buffer ready signal (TxB_RDY) to an external are inactive.
When the CPU writes the data into the transmit buffer (TXBUF) with an interrupt processing program, the transmit buffer empty bit (TXB_EMPTY) is cleared
to "0" and assertion of the transmit buffer ready signal (TxB_RDY) to an external is made.
When a read operation is performed from an external MCU bus in the condition of ExCS = "L" and ExA0 = "H", it will result in as follows:
* The contents of the transmit buffer (TXBUF) is read out * The transmit buffer empty bit (TXB_EMPTY) is set to "1" * Negation of the transmit buffer ready signal (TxB_RDY) to an external is made.
Fig. 123 CPU channel tranmitting operation
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(3) Memory Channel Receiving Operation (1)Cycle Mode
Memory channel receiving operation (1) is shown bellow.
Address ExA0 Chip select ExCS DMA acknowledge ExDACK Read ExRD Write ExWR Data DQ0 to DQ7 Internal clock DMA request ExDREQ

A0 = "0" CS = "0"
'
A0 = "0" CS = "0"
'
#0
#1
Mch_req
Mch_req
mWR mWR
detection detection #0 #1
Receive buffer RXBUF
Operation enabled Main sequencer Memory channel operation end interrupt Internal memory access req req 0 1 2 3 5
Memory address Counter end
010016
010116
010216
Acknowledgment of internal memory access
ack
ack
External I/O configuration register Set as necessary. Memory channel operation mode register MC_DIR[1:0] (Memory channel direction control) = 012 (Receive mode) Burst (burst) = "0" (Cycle mode) Memory address counter (Example) 010016 End address register (Example) 010116 EXB interrupt source enable register
MC_ENB (Memory channel operation enable) = "1" (Operation start)
In the memory channel receive mode when the command for enabling operation is written, operation starts (main sequencer starts) and assertion of the
memory channel request which synchronized with a rise of is made.
When the external MCU bus is in the condition of ExCS = "L" and ExA0 = "L" or a fall of ExWR is detected in the condition of ExDACK = "L", negation of the
memory channel request which synchronized with a rise of is made.
When a rise of ExWR is detected, an internal memory access sequence which synchronized with a rise of is activated and a data is written in the internal
memory within two clocks at a minimum.
The memory address counter is increased simultaneously at write completion and assertion of the next memory channel request is made. When the write operation to the end address has been completed, the memory address counter is increased, but assertion of the next memory channel
request is not made and the memory channel operation end interrupt is generated.
Fig. 124 Memory channel receiving operation (1)
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(4) Memory Channel Receiving Operation (2)Burst Mode
Memory channel receiving operation (2) is shown bellow.
Address ExA0 Chip select ExCS DMA acknowledge ExDACK Read ExRD
A0 = "x" CS = "1"
Dack = "0"
A0 = "x" CS = "1"
Dack = "0"
'
A0 = "x" CS = "1"
Dack = "0"
Write ExWR Data DQ0 to DQ7 Internal clock DMA request ExDREQ

Mch_req #0 #1
'
#2
mWR mWR
detection detection
#0 #1 #2
Receive buffer RXBUF
Operation enabled
Main sequencer Memory channel operation end interrupt Internal memory access
req req req 0 1 2 3 5
Memory address Counter end Burst end
010016
010116
010216
010316
Acknowledgment of internal memory access
ack
ack
ack
External I/O configuration register Set as necessary. Memory channel operation mode register MC_DIR[1:0] (Memory channel direction control) = 012 (Receive mode) Burst (burst) = "1" (Burst mode) Memory address counter (Example) 010016 End address register (Example) 010216 EXB interrupt source enable register
MC_ENB (Memory channel operation enable) = "1" (Operation start)
In the memory channel receive mode when the command for enabling operation is written, assertion of the memory channel request which synchronized
with a rise of is made.
When a rise of ExWR is detected, an internal memory access sequence which synchronized with a rise of is activated and a data is written in the internal
memory within two clocks at a minimum.
The memory address counter is increased simultaneously at the former data write completion.
When the memory address counter reaches the end address, the detection circuit of external write signal (ExWR) operation is enabled and negation of the memory channel request which synchronized with the following is made. the write operation to the end address has been completed, the memory address counter is increased and the memory channel operation end interrupt is generated.
When
Fig. 125 Memory channel receiving operation (2)
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(5) Memory Channel Receiving Operation (3)Burst Mode (Terminal Count)
Memory channel receiving operation (3) is shown bellow.
'
Address ExA0 Chip select ExCS DMA acknowledge ExDACK Terminal count ExTC Write ExWR Data DQ0 to DQ7 Internal clock DMA request ExDREQ
Mch_req #0 #1
'
A0 = "x" CS = "1"
Dack = "0"
A0 = "x" CS = "1"
Dack = "0"
'
TC

mWR mWR
detection detection
#0 #1
Receive buffer RxBuf mTC detection
TC synchronizing TC end Operation enabled Main sequencer Memory channel operation end interrupt Internal memory access
req 0 1 2 3 (5) 5
'
'
'
'
Memory address Counter end Burst end
010016
010116
010216
Acknowledgment of internal memory access
ack
ack
External I/O configuration register Set as necessary. Memory channel operation mode register MC_DIR[1:0] (Memory channel direction control) = 012 (Receive mode) Burst (burst) = "1" (Burst mode) Memory address counter (Example) 010016 End address register (Example) 010716 EXB interrupt source enable register
MC_ENB (Memory channel operation enable) = "1" (Operation start)
When a rise of TC is detected, negation of the memory channel request which synchronized with a rise of is made. When the write operation to the end address has been completed, the memory channel operation end interrupt is generated.
Fig. 126 Memory channel receiving operation (3)
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(6) Memory Channel Transmitting Operation (1)Cycle Mode
Memory channel transmitting operation (1) is shown bellow.
Address ExA0 Chip select ExCS DMA acknowledge ExDACK Read ExRD Write ExWR Data DQ0 to DQ7 Internal clock DMA request ExDREQ

A0 = "x" CS = "1"
Dack = "0"
'
A0 = "x" CS = "1"
Dack = "0"
'
#0
#1
Mch_req
Mch_req
mRD mRD
detection detection
Transmission completed Transmit buffer TXBUF #0 #1
Operation enabled Main sequencer Memory channel operation end interrupt Internal memory access req 0 1 2
3
4
5
req
Memory address Counter end
010016
010116
010216
Acknowledgment of internal memory access
ack
ack
External I/O configuration register Set as necessary. Memory channel operation mode register MC_DIR[1:0] (Memory channel direction control) = 102 (Transmit mode) Burst (burst) = "0" (Cycle mode) Memory address counter (Example) 010016 End address register (Example) 010116 EXB interrupt source enable register
MC_ENB (Memory channel operation enable) = "1" (Operation start)
In the memory channel transmit mode when the command for enabling operation is written, operation starts (main sequencer starts) and an internal memory access sequence which synchronized with a rise of is activated.
A data is read out from the internal memory within two clocks at a minimum and this data is stored in the transmit buffer (TXBUF). The memory address
counter is simultaneously increased and assertion of the memory channel request is made.
When the external MCU bus is in the condition of ExCS = "L" and ExA0 = "L" or a fall of ExRD is detected in the condition of ExDACK = "L", negation of the
memory channel request which synchronized with a rise of is made.
When a rise of ExRD is detected, an internal memory access sequence which synchronized with a rise of is activated. A data is read out from the internal memory within two clocks at a minimum and this data is stored in the transmit buffer (TXBUF). The memory address
counter is simultaneously increased and assertion of the memory channel request is made. When the read operation from the end address has been completed, the transition to the status to wait the memory channel operation end occurs.
When a rise of ExRD is detected, the memory channel operation sequence ends and the memory channel operation end interrupt is generated.
Fig. 127 Memory channel tranmitting operation (1)
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(7) Memory Channel Transmitting Operation (2)Burst Mode
Memory channel transmitting operation (2) is shown bellow.
Address ExA0 Chip select ExCS DMA acknowledge ExDACK Read ExRD Write ExWR Data DQ0 to DQ7 Internal clock DMA request ExDREQ

A0 = "x" CS = "1"
Dack = "0"
A0 = "x" CS = "1"
Dack = "0"
'
A0 = "x" CS = "1"
Dack = "0"
'
#0
#1
#2
Mch_req
mRD mRD
detection detection
Transmission completed Transmit buffer TXBUF Operation enabled
#0 #1 #2
Main sequencer Memory channel operation end interrupt Internal memory access
req req req 0 1 2 3 4 5
Memory address Counter end Burst end
010016
010116
010216
010316
Acknowledgment of internal memory access
ack
ack
ack
External I/O configuration register Set as necessary. Memory channel operation mode register MC_DIR[1:0] (Memory channel direction control) = 102 (Transmit mode) Burst (burst) = "1" (Burst mode) Memory address counter (Example) 010016 End address register (Example) 010216 EXB interrupt source enable register
MC_ENB (Memory channel operation enable) = "1" (Operation start)
In the memory channel transmit mode when the command for enabling operation is written, an internal memory access sequence which synchronized with
a rise of is activated.
A data is read out from the internal memory within two clocks at a minimum and this data is stored in the transmit buffer (TXBUF). The memory address
counter is simultaneously increased and assertion of the memory channel request is made.
When a rise of ExRD is detected, an internal memory access sequence which synchronized with a rise of is activated. A data is read out from the internal memory within two clocks at a minimum and this data is stored in the transmit buffer (TXBUF). The memory address
counter is simultaneously increased.
When the read operation from the end address has been completed, the detection circuit of external read signal (ExRD) operation is enabled and negation
of the memory channel request which synchronized with the following is made.
When a rise of ExRD is detected, the memory channel operation sequence ends and the memory channel operation end interrupt is generated.
Fig. 128 Memory channel tranmitting operation (2)
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
MULTICHANNEL RAM
The 38K2 group has the built-in multichannel RAM including the small logic circuit (RAM I/F) instead of ordinary RAM. The multichannel RAM has the USB channel and the EXB channel in addition to the CPU channel. The multichannel RAM controls access from CPU, USB and EXB, synchronizing control with . The USB transfer rate is about 1.5 Mbytes/second. Access to the multichannel RAM is performed at every about 5.3 clocks in = 8 MHz, or at every about 4 clocks in = 6 MHz. The USB's access has priority to the EXB's.
The one wait function (ONW function) of 38000 series CPU is used internally to control access with the CPU. When receiving an access request from the USB or the EXB, the multichannel RAM outputs ONW signal to wait the CPU for one clock, and access of the USB or the EXB is performed. If the multichannel RAM is outputting ONW signal while the CPU is in the state of reading/writing for the RAM area, the CPU read cycle or write cycle is extended by 1 period of .
No wait
ONW = "H"
No wait Except RAM
No wait No RD/WR
CPU bus cycle CPU AD RD/WR RAM area Except RAM RAM area
USB REQ Multichannel RAM EXB REQ ONW
RAM access right RAM bus cycle RAM RD/WR
CPU
USB
CPU
Fig. 129 Multichannel RAM timing diagram (no wait)
One wait CPU accessing RAM at the latter part
One wait Prohibiting continuous access of USB/EXB Prior CPU
One wait USB having priority of USB/EXB simultaneous access Prior USB Prior CPU
One wait 2-cycle wait (max.) for EXB
Prior CPU CPU bus cycle CPU AD RD/WR RAM area
RAM area
RAM area
RAM area
USB REQ Multichannel RAM EXB REQ ONW
RAM access right RAM bus cycle RAM RD/WR
EXB
CPU
USB
CPU
USB
CPU
EXB
CPU
Fig. 130 Multichannel RAM timing diagram (one wait)
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Multichannel RAM Operation Example
The multichannel RAM operation example is shown below. This example shows the case that an external MCU uses the 38K2 group as a peripheral LSI (USB controller). The following explains that the external MCU reads out the data which is received via the USB. The data which is received via the USB is written into the multichannel RAM. Receive completion is propagated to the CPU. The external bus interface is activated owing to the CPU. (1) The external bus interface sets the data which is read from the multichannel RAM into the internal data buffer. (2) The external MCU reads out the data bus buffer of the external bus interface. (3) The above operation is repeated by the number of the received bytes. After that, the data transfer is completed.
CPU
Program ROM
Peripheral functions
External MCU
Activating
External MCU bus
Notice of receive completion
USB bus (USB host)
External bus interface
Multichannel RAM
USB
FIFO read of received data
by External bus interface
FIFO write of received data
by USB
Fig. 131 Multichannel RAM operation example
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
A/D CONVERTER
The functional blocks of the A/D converter are described below.
Comparator and Control Circuit
The comparator and control circuit compares an analog input voltage with the comparison voltage, and then stores the result in the AD conversion registers 1, 2. When an A/D conversion is completed, the control circuit sets the AD conversion completion bit and the AD interrupt request bit to "1". Note that because the comparator consists of a capacitor coupling, set f(system clock) to 500 kHz or more during an A/D conversion.
[AD Conversion Register 1, 2 (AD1, AD2)] 003716, 003816
The AD conversion register is a read-only register that stores the result of an A/D conversion. When reading this register during an A/D conversion, the previous conversion result is read. Bit 7 of the AD conversion register 2 must be set to "0". Not only 10-bit reading but also only high-order 8-bit reading of conversion result can be performed by selecting the reading procedure of the AD conversion registers 1, 2 after A/D conversion is completed (in Figure 133). The 8-bit reading inclined to MSB is performed when reading the AD converter register 1 after A/D conversion is started or reset; and when the AD converter register 1 is read after reading the AD converter register 2, the 8-bit reading inclined to LSB is performed.
b7
b0
AD control register (ADCON : address 003616) Analog input pin selection bits 0 0 0 : P10/DQ0/AN0 0 0 1 : P11/DQ1/AN1 0 1 0 : P12/DQ2/AN2 0 1 1 : P13/DQ3/AN3 1 0 0 : P14/DQ4/AN4 1 0 1 : P15/DQ5/AN5 1 1 0 : P16/DQ6/AN6 1 1 1 : P17/DQ7/AN7 AD conversion completion bit 0 : Conversion in progress 1 : Conversion completed Not used (indefinite at read) (These bits are write disabled bits.)
[AD Control Register (ADCON)] 003616
The AD control register controls the A/D conversion process. Bits 0 to 2 select a specific analog input pin. Bit 3 signals the completion of an A/D conversion. The value of this bit remains at "0" during an A/D conversion, and changes to "1" when an A/D conversion ends. Writing "0" to this bit starts the A/D conversion.
Comparison Voltage Generator
The comparison voltage generator divides the voltage between VREF and AVSS into 1024, and that outputs the comparison voltage. The A/D converter successively compares the comparison voltage Vref in each mode, dividing the VREF voltage (see below), with the input voltage. * 10-bit reading VREF Vref = 1024 n (n = 0-1023) * 8-bit reading Vref = VREF n (n = 0-255) 256 Fig. 132 Structure of AD control register
10-bit reading
(Read address 003816 before 003716) b7 (address 003816) 0 (address 003716) b0 b9 b8
b0 b7 b7 b6 b5 b4 b3 b2 b1 b0
Note : Bits 2 to 7 of address 003816 become "0" at reading.
Channel Selector
The channel selector selects one of the input ports P17/AN7-P10/ AN0.
8-bit reading
(Read only address 003716) b7 (address 003716) Fig. 133 10-bit/8-bit reading b0 b9 b8 b7 b6 b5 b4 b3 b2
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Data bus
A/D control register (address 003616)
b7
b0
3 P10/DQ0/AN0 P11/DQ1/AN1 P12/DQ2/AN2 P13/DQ3/AN3 P14/DQ4/AN4 P15/DQ5/AN5 P16/DQ6/AN6 P17/DQ7/AN7 A/D control circuit A/D interrupt request
Channel selector
Comparator
AD conversion register 2 AD conversion register 1
(address 003816) (address 003716)
10 Resistor ladder
VREF
Fig. 134 A/D converter block diagram
VSS
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
WATCHDOG TIMER
The watchdog timer gives a mean of returning to the reset status when a program cannot run on a normal loop (for example, because of a software run-away). The watchdog timer consists of an 8-bit watchdog timer L and an 8-bit watchdog timer H.
Standard Operation of Watchdog Timer
When any data is not written into the watchdog timer control register (address 003916) after resetting, the watchdog timer is in the stop state. The watchdog timer starts to count down by writing an optional value into the watchdog timer control register (address 003916) and an internal reset occurs at an underflow of the watchdog timer H. Accordingly, programming is usually performed so that writing to the watchdog timer control register (address 003916) may be started before an underflow. When the watchdog timer control register (address 003916) is read, the values of the high-order 6 bits of the watchdog timer H, STP instruction disable bit (bit 6), and watchdog timer H count source selection bit (bit 7) are read.
qWatchdog timer H count source selection bit operation Bit 7 of the watchdog timer control register (address 003916) permits selecting a watchdog timer H count source. When this bit is set to "0", the count source becomes the underflow signal of watchdog timer L. The detection time is set to 131.072 ms at system clock 8 MHz frequency. When this bit is set to "1", the count source becomes the system clock divided by 16. The detection time in this case is set to 512 s at system clock 8 MHz frequency. This bit is cleared to "0" after resetting. qOperation of STP instruction disable bit Bit 6 of the watchdog timer control register (address 003916) permits disabling the STP instruction when the watchdog timer is in operation. When this bit is "0", the STP instruction is enabled. When this bit is "1", the STP instruction is disabled. Once the STP instruction is executed, an internal reset occurs. When this bit is set to "1", it cannot be rewritten to "0" by program. This bit is cleared to "0" after resetting.
Initial Value of Watchdog Timer
At reset or writing to the watchdog timer control register (address 003916), each watchdog timer H and L is set to "FF16."
"FF16" is set when watchdog timer control register is written to.
Data bus
"FF16" is set when watchdog timer control register is written to.
System clock
Watchdog timer L (8) 1/16
"0" "1" Watchdog timer H (8)
Watchdog timer H count source selection bit STP instruction disable bit STP instruction RESET
Fig. 135 Block diagram of Watchdog timer
Reset circuit
Internal reset
b7
b0
Watchdog timer control register (WDTCON : address 003916)
Watchdog timer H (for read-out of high-order 6 bit) STP instruction disable bit 0: STP instruction enabled 1: STP instruction disabled Watchdog timer H count source selection bit 0: Watchdog timer L underflow 1: System clock/16
Fig. 136 Structure of Watchdog timer control register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
RESET CIRCUIT
To reset the microcomputer, RESET pin should be held at an "L" level for 16 cycles or more of XIN. Then the RESET pin is returned to an "H" level (the power source voltage should be between 3.0 V and 5.25 V for L version, and the oscillation should be stable), reset is released. After the reset is completed, the program starts from the address contained in address FFFD16 (high-order byte) and address FFFC16 (low-order byte). Make sure that the reset input voltage is under 0.6 V for VCC of 3.0 V (L version).
Poweron
Power source voltage 0V
(Note)
RESET
VCC
Reset input voltage 0V
0.2VCC
Note : Reset release voltage ; Vcc = 3.0 V (L version)
RESET
VCC Power source voltage detection circuit
Fig. 137 Example of reset circuit
XIN
RESET Internal reset
Address
?
?
?
?
FFFC
FFFD
ADH,L
Reset address from the vector table.
Data
?
?
?
?
ADL
ADH
SYNC
XIN: 10.5 to 18.5 clock cycles Notes 1: The frequency relation of f(XIN) and f() is f(XIN)=8 * f(). 2: The question marks (?) indicate an undefined state that depends on the previous state.
Fig. 138 Reset sequence
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
PLL CIRCUIT (FREQUENCY SYNTHESIZER)
The PLL circuit generates fVCO (PLL output clock), which is required for fUSB (USB clock) and fSYN (fUSB division clock), from f(XIN) (external input reference clock). Figure 139 shows the PLL circuit block diagram. It is possible to input 6 or 12 MHz clock from the externals as a standard clock input. When using the USB function, set the PLL operation mode selection bit so that fvco may be set to 48 MHz. The PLL circuit operates by setting the PLL operation enable bit to "1". When supplying fVCO to the USB block, wait for the oscillation stable time (1ms or less) of PLL before selecting fVCO with the USB clock selection bit. According to the setting of the USB clock division ratio selection bit, the division clock of fUSB is supplied to fSYN. When using this clock as system clock, set the USB clock division ratio selection bit so that it may be set to 6 MHz, 8 MHz or 12 MHz. (However, using it only when fUSB is 48MHz is recommended).
fUSB f(XIN) PLL fVCO Division circuit fSYN
PLLCON (address 0FF816)
USBCON (address 001016)
Fig. 139 Block diagram of PLL circuit
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
PLL control register (PLLCON: address 0FF816)
Not used (return "0" when read) USB clock division ratio selection bits
b4b3
0 0: Divided by 8 (fSYN = fUSB/8) 0 1: Divided by 6 (fSYN = fUSB/6) 1 0: Divided by 4 (fSYN = fUSB/4) 1 1: Not selected PLL operation mode selection bits
b6b5
0 0: Not multiplied (fVCO = fXIN) 0 1: Double (fVCO = fXIN 2) 1 0: Quadruple (fVCO = fXIN 4) 1 1: Multiplied by 8 (fVCO = fXIN 8) PLL Enable Bit 0: Disabled 1: Enabled
Fig. 140 Structure of PLL control register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
CLOCK GENERATING CIRCUIT
An oscillation circuit can be formed by connecting a resonator between XIN and XOUT. Use the circuit constants in accordance with the resonator manufacturer's recommended values. No external resistor is needed between XIN and XOUT since a feed-back resistor exists on-chip. (An external feed-back resistor may be needed depending on conditions.)
Oscillation Control (1) Stop mode
If the STP instruction is executed, the internal clock stops at an "H" level, and the XIN oscillator stops. When the oscillation stabilizing time set after STP instruction released bit is "0," the prescaler 12 is set to "FF16" and timer 1 is set to "0116." When the oscillation stabilizing time set after STP instruction released bit is "1," set the sufficient time for oscillation of used oscillator to stabilize since nothing is set to the prescaler 12 and timer 1. XIN divided by 16 is compulsorily connected to the input of the prescaler 12. Oscillator restarts when an external interrupt (including USB resume interrupt) is received, but the internal clock remains at "H" until timer 1 underflows. The internal clock is not supplied until timer 1 underflows. Because the sufficient time is required for the oscillation to stabilize when a ceramic resonator etc. is used. When the oscillator is restarted by reset, apply "L" level to the RESET pin until the oscillation is stable since a wait time will not be generated automatically.
Frequency Control
Either fSYN or f(XIN) can be selected as an internal system clock. Furthermore, the frequency of internal clock can be selected by the system clock division ratio selection bit.
(1) fSYN clock
fSYN clock is generated by the PLL circuit. f(XIN) or fVCO can be selected as an input clock. When using as an internal system clock, there is restriction on use. Refer to the clause of "PLL CIRCUIT".
(2) f(XIN) clock
The frequency applied to the XIN pin is used as an internal system clock frequency.
(2) Wait mode
If the WIT instruction is executed, the internal clock stops at an "H" level, but the oscillator does not stop. The internal clock restarts at reset or when an interrupt is received. Since the oscillator does not stop, normal operation can be started immediately after the clock is restarted. To ensure that the interrupts will be received to release the STP or WIT state, their interrupt enable bits must be set to "1" before executing of the STP or WIT instruction. When releasing the STP state, the prescaler 12 and timer 1 will start counting the clock XIN divided by 16. Accordingly, set the timer 1 interrupt enable bit to "0" before executing the STP instruction.
sNote
When using the oscillation stabilizing time set after STP instruction released bit set to "1", evaluate time to stabilize oscillation of the used oscillator and set the value to the timer 1 and prescaler 12.
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
b7
b0
XIN
XOUT Rd (Note)
MISRG (MISRG: address 0FFB16)
Oscillation stabilizing time set after STP instruction released bit 0: Automatically set "0116" to Timer 1, "FF16" to Prescaler 12 1: Automatically set nothing Not used (indefinite at read)
CIN
COUT
Note : Insert a damping resistor if required. The resistance will vary depending on the oscillator and the oscillation drive capacity setting. Use the value recommended by the maker of the oscillator. Also, if the oscillator manufacturer's data sheet specifies that a feedback resistor be added external to the chip though a feedback resistor exists on-chip, insert a feedback resistor between XIN and XOUT following the instruction.
Fig. 143 Structure of MISRG
Fig. 141 Ceramic resonator or quartz-crystal oscilltor circuit
XIN
XOUT Open
External oscillation circuit VCC VSS
Fig. 142 External clock input circuit
XIN
XOUT
PLL
fvco USB clock selection bit fUSB 1/4 1/6 1/8 USB clock division ration selection bits fSYN System clock selection bit
fsio fAD
1/2 1/1 1/2
1/2 1/4
1/2 1/8
1/2
Prescaler 12
Timer 1 0116
Reset or STP instruction
FF16 System clock division ration selection bits
Timing (internal clock)
QS R Reset Interrupt disable flag l Interrupt request STP instruction WIT instruction
SQ R
QS R STP instruction
Reset
Fig. 144 System clock generating circuit block diagram (single-chip mode)
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Reset
XIN 8-divide mode f() = 0.75 MHz CM 7 = 0 CM 6 = 0 CM 5 = 0 PLLCON [4:3] = 00
CM6 "0""1"
XIN 4-divide mode f() = 1.5 MHz CM7 = 0 CM6 = 0 CM5 = 0 PLLCON [4:3] = xx (arbitrary)
C "0 M6 CM " "1 7 " 1" " "0 "
" 6 "1 CM " 1" "0 M7 " C " "0
CM7 "1""0"
XIN 2-divide mode f() = 3.0 MHz CM 7 = 1 CM 6 = 0 CM 5 = 0 PLLCON [4:3] = xx (arbitrary)
CM6 "0""1"
XIN through mode f() = 1.5 MHz CM7 = 0 CM6 = 0 CM5 = 0 PLLCON [4:3] = xx (arbitrary)
CM5 "1""0"
Note: Set PLLCON [4:3] = 10 before switching the system clock from XIN to fSYN.
f(SYN) 2-divide mode f() = 6.0 MHz CM 7 = 1 CM 6 = 0 CM 5 = 1 PLLCON [4:3] = 10
CM5 "0""1" CM6 "0""1"
Note: Set PLLCON [4:3] = 00 before switching the system clock from XIN to fSYN.
f(SYN) through mode f() = 6.0 MHz CM 7 = 1 CM 6 = 1 CM 5 = 1 PLLCON [4:3] = 00
CM7 "1""0"
CM5 "0""1"
Note: Set PLLCON [4:3] = 00 before switching the system clock from XIN to fSYN.
CM5 "0""1" CM6 "0""1"
Note: Set PLLCON [4:3] = 01 before switching the system clock from XIN to fSYN.
f(SYN) through mode f() = 8.0 MHz CM 7 = 1 CM 6 = 1 CM 5 = 1 PLLCON [4:3] = 01
CM5 "0""1"
Note: Set PLLCON [4:3] = 01 before switching the system clock from XIN to fSYN.
Notes 1 : Switch the mode by the allows shown between the mode blocks. (Do not switch between the modes directly without an allow.) 2 : Set the USB clock (fUSB) to 48 MHz when switching the system clock to fSYN. 3 : Do not change a division ratio of USB clock when using fSYN as the system clock. 4 : See section "PLL CIRCUIT" in details for enabling/disabling PLL operation and usage notes of fSYN. 5 : Set the system clock to XIN when entering STOP mode. 6 : In all modes, switching to WAIT mode is possible. When it is released, the MCU returns to the original mode. In WAIT mode the timers can operate. Remarks : This diagram assumes that the 6 MHz signals are applied to XIN pin.
Fig. 145 State transitions of clock
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
FLASH MEMORY MODE
The 38K2 group's flash memory version has an internal new DINOR (DIvided bit line NOR) flash memory that can be rewritten with a single power source when VCC is 4.5 to 5.25 V, and 2 power sources when VCC is 3.0 to 4.5 V. For this flash memory, three flash memory modes are available in which to read, program, and erase: the parallel I/O and standard serial I/O modes in which the flash memory can be manipulated using a programmer and the CPU rewrite mode in which the flash memory can be manipulated by the Central Processing Unit (CPU).
This flash memory version has some blocks on the flash memory as shown in Figure 146 and each block can be erased. The flash memory is divided into User ROM area and Boot ROM area. In addition to the ordinary User ROM area to store the MCU operation control program, the flash memory has a Boot ROM area that is used to store a program to control rewriting in CPU rewrite and standard serial I/O modes. This Boot ROM area has had a standard serial I/O mode control program stored in it when shipped from the factory. However, the user can write a rewrite control program in this area that suits the user's application system. This Boot ROM area can be rewritten in only parallel I/O mode.
Summary
Table 9 lists the summary of the 38K2 group's flash memory version.
Table 9 Summary of 38K2 group's flash memory version Item Power source voltage (Vcc) Program/Erase VPP voltage (VPP) Flash memory mode Specifications 3.00 - 5.25 V (L version) (Program and erase in 4.00 to 5.25 V of Vcc.) 3.00 - 4.00 V (L version) (Program and erase in 3.00 to 5.25 V of Vcc.) 4.50 - 5.25 V 3 modes; Flash memory can be manipulated as follows: *CPU rewrite mode: Manipulated by the Central Processing Unit (CPU). *Parallel I/O mode: Manipulated using an external programmer (Note 1) *Standard serial I/O mode: Manipulated using an external programmer (Note 1) Erase block division User ROM area Boot ROM area 1 block (32 Kbytes) 1 block (4 Kbytes) (Note 2) Byte program Batch erasing Program/Erase control by software command 6 commands 100 times 10 years Available in parallel I/O mode and standard serial I/O mode
Program method Erase method Program/Erase control method Number of commands Number of program/Erase times Data retention period ROM code protection
Notes 1: In the parallel I/O mode or the standard serial I/O mode, use the exclusive external equipment flash programmer which supports the 38K2 Group (flash memory version). 2: The Boot ROM area has had a standard serial I/O mode control program stored in it when shipped from the factory. This Boot ROM area can be rewritten in only parallel I/O mode.
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(1) CPU Rewrite Mode
In CPU rewrite mode, the internal flash memory can be operated on (read, program, or erase) under control of the Central Processing Unit (CPU). In CPU rewrite mode, only the User ROM area shown in Figure 146 can be rewritten; the Boot ROM area cannot be rewritten. Make sure the program and block erase commands are issued for only the User ROM area and each block area. The control program for CPU rewrite mode can be stored in either User ROM or Boot ROM area. In the CPU rewrite mode, because the flash memory cannot be read from the CPU, the rewrite control program must be transferred to internal RAM area to be executed before it can be executed.
Microcomputer Mode and Boot Mode
The control program for CPU rewrite mode must be written into the User ROM or Boot ROM area in parallel I/O mode beforehand. (If the control program is written into the Boot ROM area, the standard serial I/O mode becomes unusable.) See Figure 146 for details about the Boot ROM area. Normal microcomputer mode is entered when the microcomputer is reset with pulling CNVSS pin low. In this case, the CPU starts operating using the control program in the User ROM area. When the microcomputer is reset by pulling the P16 (CE) pin high, the CNVSS pin high, the CPU starts operating using the control program in the Boot ROM area. This mode is called the "Boot" mode.
Block Address
Block addresses refer to the maximum address of each block. These addresses are used in the block erase command.
User ROM area 800016 FFFF16 Block 1 : 32 Kbytes F00016 FFFF16 Boot ROM area 4 Kbytes
Notes 1: The Boot ROM area can be rewritten in only parallel I/O mode. (Access to any other areas is inhibited.) 2: To specify a block, use the maximum address in the block.
Fig. 146 Block diagram of built-in flash memory
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Outline Performance (CPU Rewrite Mode)
CPU rewrite mode is usable in the single-chip or Boot mode. The only User ROM area can be rewritten in CPU rewrite mode. In CPU rewrite mode, the CPU erases, programs and reads the internal flash memory as instructed by software commands. This rewrite control program must be transferred to a memory such as the internal RAM before it can be executed. The MCU enters CPU rewrite mode by applying 4.50 V to 5.25 V to the CNVSS pin and setting "1" to the CPU Rewrite Mode Select Bit (bit 1 of address 0FFE16). Software commands are accepted once the mode is entered. Use software commands to control program and erase operations. Whether a program or erase operation has terminated normally or in error can be verified by reading the status register. Figure 147 shows the flash memory control register. Bit 0 is the RY/BY status flag used exclusively to read the operating status of the flash memory. During programming and erase operations, it is "0" (busy). Otherwise, it is "1" (ready). This is equivalent to the RY/BY pin function in parallel I/O mode. Bit 1 is the CPU Rewrite Mode Select Bit. When this bit is set to "1", the MCU enters CPU rewrite mode. Software commands are accepted once the mode is entered. In CPU rewrite mode, the
CPU becomes unable to access the internal flash memory directly. Therefore, use the control program in a memory other than internal flash memory for write to bit 1. To set this bit to "1", it is necessary to write "0" and then write "1" in succession. The bit can be set to "0" by only writing "0". Bit 2 is the CPU Rewrite Mode Entry Flag. This flag indicates "1" in CPU rewrite mode, so that reading this flag can check whether CPU rewrite mode has been entered or not. Bit 3 is the flash memory reset bit used to reset the control circuit of internal flash memory. This bit is used when exiting CPU rewrite mode and when flash memory access has failed. When the CPU Rewrite Mode Select Bit is "1", setting "1" for this bit resets the control circuit. To set this bit to "1", it is necessary to write "0" and then write "1" in succession. To release the reset, it is necessary to set this bit to "0". Bit 4 is the User Area/Boot Area Select Bit. When this bit is set to "1", Boot ROM area is accessed, and CPU rewrite mode in Boot ROM area is available. In Boot mode, this bit is set to "1" automatically. Reprogramming of this bit must be in a memory other than internal flash memory. Figure 148 shows a flowchart for setting/releasing CPU rewrite mode.
b7
b0
Flash memory control register (address 0FFE16) FMCR (Note 1)
RY/BY status flag 0: Busy (being written or erased) 1: Ready CPU rewrite mode select bit (Note 2) 0: Normal mode (Software commands invalid) 1: CPU rewrite mode (Software commands acceptable) CPU rewrite mode entry flag 0: Normal mode (Software commands invalid) 1: CPU rewrite mode Flash memory reset bit (Note 3) 0: Normal operation 1: Reset User area / Boot area select bit (Note 4) 0: User ROM area accessed 1: Boot ROM area accessed Reserved bits (indefinite at read/ "0" at write) Notes 1: The contents of flash memory control register are "XXX00001" just after reset release. 2: For this bit to be set to "1", the user needs to write "0" and then "1" to it in succession. If it is not this procedure, this bit will not be set to "1". Additionally, it is required to ensure that no interrupt will be generated during that interval. Use the control program in the area except the built-in flash memory for write to this bit. 3: This bit is valid when the CPU rewrite mode select bit is "1". Set this bit 3 to "0" subsequently after setting bit 3 to "1". 4: Use the control program in the area except the built-in flash memory for write to this bit.
Fig. 147 Structure of flash memory control register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Start
Single-chip mode or Boot mode (Note 1)
Set CPU mode register (Note 2)
Transfer CPU rewrite mode control program to memory other than internal flash memory
Jump to control program transferred in memory other than internal flash memory (Subsequent operations are executed by control program in this memory)
Set CPU rewrite mode select bit to "1" (by writing "0" and then "1" in succession)
Check CPU rewrite mode entry flag
Using software command execute erase, program, or other operation
Execute read array command or reset flash memory by setting flash memory reset bit (by writing "1" and then "0" in succession) (Note 3)
Write "0" to CPU rewrite mode select bit
End Notes 1: When starting the MCU in the single-chip mode or memory expansion mode, supply 4.5 V to 5.25 V to the CNVss pin until checking the CPU rewrite mode entry flag. 2: Set the system clock division ration selection bits of CPU mode register (bits 6 and 7 at address 003B16). 3: Before exiting the CPU rewrite mode after completing erase or program operation, always be sure to execute the read array command or reset the flash memory.
Fig. 148 CPU rewrite mode set/release flowchart
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Notes on CPU Rewrite Mode
Take the notes described below when rewriting the flash memory in CPU rewrite mode. qOperation speed During CPU rewrite mode, set the internal clock to 1.5 MHz or less using the system clock division ratio selection bits (bits 6 and 7 of address 003B16). qInstructions inhibited against use The instructions which refer to the internal data of the flash memory cannot be used during CPU rewrite mode . qInterrupts inhibited against use The interrupts cannot be used during CPU rewrite mode because they refer to the internal data of the flash memory. qWatchdog timer If the watchdog timer has been already activated, internal reset due to an underflow will not occur because the watchdog timer is surely cleared during program or erase. qReset Reset is always valid. The MCU is activated using the boot mode at release of reset in the condition of CNVss = "H", so that the program will begin at the address which is stored in addresses FFFC16 and FFFD16 of the boot ROM area.
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Software Commands
Table 10 lists the software commands. After setting the CPU Rewrite Mode Select Bit to "1", write a software command to specify an erase or program operation. Each software command is explained below. qRead Array Command (FF16) The read array mode is entered by writing the command code "FF16" in the first bus cycle. When an address to be read is input in one of the bus cycles that follow, the contents of the specified address are read out at the data bus (D0 to D7). The read array mode is retained intact until another command is written. qRead Status Register Command (7016) When the command code "7016" is written in the first bus cycle, the contents of the status register are read out at the data bus (D0 to D7) by a read in the second bus cycle. The status register is explained in the next section. qClear Status Register Command (5016) This command is used to clear the bits SR4 and SR5 of the status register after they have been set. These bits indicate that operation has ended in an error. To use this command, write the command code "5016" in the first bus cycle. qProgram Command (4016) Program operation starts when the command code "4016" is written in the first bus cycle. Then, if the address and data to program are written in the 2nd bus cycle, the control circuit of flash memory (data programming and verification) will start a program. Whether the write operation is completed can be confirmed by _____ reading the status register or the RY/BY Status Flag. When the program starts, the read status register mode is entered automatically and the contents of the status register is read at the data bus (DB0 to DB7). The status register bit 7 (SR7) is set to "0" at the same time the write operation starts and is returned to "1" upon completion of the write operation. In this case, the read status register mode remains active until the read array command (FF16) is written. Table 10 List of software commands (CPU rewrite mode)
____
During the program movement, The RY/BY Status Flag of flash memory control register is set to "0". When the program completes, it becomes "1". At program end, program results can be checked by reading the status register.
Start Write 4016 Write Write address Write data Status register read
SR7 = 1 ? or RY/BY = 1 ? YES
NO
S R4 = 0 ? YES Program completed
NO
Program error
Fig. 149 Program flowchart
Command Read array Read status register Clear status register Program Erase all blocks Block erase
Cycle number 1 2 1 2 2 2
Mode Write Write Write Write Write Write
First bus cycle Data Address (D0 to D7) X
(Note 4)
Second bus cycle Data Mode Address (D0 to D7)
FF16 7016 5016 4016 2016 2016 Write Write Write BA WA (Note 2) X
(Note 3)
X X X X X
Read
X
SRD
(Note 1)
WD (Note 2) 2016 D016
Notes 1: SRD = Status Register Data 2: WA = Write Address, WD = Write Data 3: BA = Block Address to be erased (Input the maximum address of each block.) 4: X denotes a given address in the User ROM area .
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
qErase All Blocks Command (2016/2016) By writing the command code "2016" in the first bus cycle and the confirmation command code "2016" in the second bus cycle that follows, the operation of erase all blocks (erase and erase verify) starts. Whether the erase all blocks command is terminated can be con____ firmed by reading the status register or the RY/BY Status Flag of flash memory control register. When the erase all blocks operation starts, the read status register mode is entered automatically and the contents of the status register can be read out at the data bus (D0 to D7). The status register bit 7 (SR7) is set to "0" at the same time the erase operation starts and is returned to "1" upon completion of the erase operation. In this case, the read status register mode remains active until the read array command (FF16) is written. ____ The RY/BY Status Flag is "0" during erase operation and "1" when the erase operation is completed as is the status register bit 7. After the erase all blocks end, erase results can be checked by reading the status register. For details, refer to the section where the status register is detailed. qBlock Erase Command (2016/D016) By writing the command code "2016" in the first bus cycle and the confirmation command code "D016" and the block address in the second bus cycle that follows, the block erase (erase and erase verify) operation starts for the block address of the flash memory to be specified. Whether the block erase operation is completed can be confirmed ____ by reading the status register or the RY/BY Status Flag of flash memory control register. At the same time the block erase operation starts, the read status register mode is automatically entered, so that the contents of the status register can be read out. The status register bit 7 (SR7) is set to "0" at the same time the block erase operation starts and is returned to "1" upon completion of the block erase operation. In this case, the read status register mode remains active until the read array command (FF16) is written. ____ The RY/BY Status Flag is "0" during block erase operation and "1" when the block erase operation is completed as is the status register bit 7. After the block erase ends, erase results can be checked by reading the status register. For details, refer to the section where the status register is detailed.
Start
Write 2016
Write
2016/D016 Block address
2016:Erase all blocks D016:Block erase
Status register read
SR7 = 1 ? or RY/BY = 1 ?
NO
YES NO
SR5 = 0 ?
Erase error
YES Erase completed
Fig. 150 Erase flowchart
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Status Register (SRD)
The status register shows the operating status of the flash memory and whether erase operations and programs ended successfully or in error. It can be read in the following ways: (1) By reading an arbitrary address from the User ROM area after writing the read status register command (7016) (2) By reading an arbitrary address from the User ROM area in the period from when the program starts or erase operation starts to when the read array command (FF16) is input. Also, the status register can be cleared by writing the clear status register command (5016). After reset, the status register is set to "8016". Table 11 shows the status register. Each bit in this register is explained below. *Sequencer status (SR7) The sequencer status indicates the operating status of the flash memory. This bit is set to "0" (busy) during write or erase operation and is set to "1" when these operations ends. After power-on, the sequencer status is set to "1" (ready).
*Erase status (SR5) The erase status indicates the operating status of erase operation. If an erase error occurs, it is set to "1". When the erase status is cleared, it is set to "0". *Program status (SR4) The program status indicates the operating status of write operation. When a write error occurs, it is set to "1". The program status is set to "0" when it is cleared. If "1" is written for any of the SR5 and SR4 bits, the program, erase all blocks, and block erase commands are not accepted. Before executing these commands, execute the clear status register command (5016) and clear the status register.
Table 11 Definition of each bit in status register
Each bit of SRD0 bits SR7 (bit7) SR6 (bit6) SR5 (bit5) SR4 (bit4) SR3 (bit3) SR2 (bit2) SR1 (bit1) SR0 (bit0)
Status name Sequencer status Reserved Erase status Program status Reserved Reserved Reserved Reserved
Definition "1"
Ready Terminated in error Terminated in error -
"0"
Busy Terminated normally Terminated normally -
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Full Status Check
By performing full status check, it is possible to know the execution results of erase and program operations. Figure 151 shows a full status check flowchart and the action to be taken when each error occurs.
Read status register
SR4 = 1 and SR5 = 1 ? NO SR5 = 0 ? YES SR4 = 0 ? YES
YES
Command sequence error
Execute the clear status register command (5016) to clear the status register. Try performing the operation one more time after confirming that the command is entered correctly. Should an erase error occur, the block in error cannot be used.
NO
Erase error
NO
Program error
Should a program error occur, the block in error cannot be used.
End (block erase, program)
Note: When one of SR5 and SR4 is set to "1", none of the program, erase all blocks, and block erase commands is accepted. Execute the clear status register command (5016) before executing these commands.
Fig. 151 Full status check flowchart and remedial procedure for errors
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Functions To Inhibit Rewriting Flash Memory Version
To prevent the contents of internal flash memory from being read out or rewritten easily, this MCU incorporates a ROM code protect function for use in parallel I/O mode and an ID code check function for use in standard serial I/O mode. qROM Code Protect Function The ROM code protect function is the function to inhibit reading out or modifying the contents of internal flash memory by using the ROM code protect control register (address FFDB16) in parallel I/O mode. Figure 152 shows the ROM code protect control register (address FFDB16). (This address exists in the User ROM area.)
If one or both of the pair of ROM Code Protect Bits is set to "0", the ROM code protect is turned on, so that the contents of internal flash memory are protected against readout and modification. The ROM code protect is implemented in two levels. If level 2 is selected, the flash memory is protected even against readout by a shipment inspection LSI tester, etc. When an attempt is made to select both level 1 and level 2, level 2 is selected by default. If both of the two ROM Code Protect Reset Bits are set to "00", the ROM code protect is turned off, so that the contents of internal flash memory can be read out or modified. Once the ROM code protect is turned on, the contents of the ROM Code Protect Reset Bits cannot be modified in parallel I/O mode. Use the serial I/O or CPU rewrite mode to rewrite the contents of the ROM Code Protect Reset Bits.
b7
b0
ROM code protect control register (address FFDB16) ROMCP
Reserved bits ("1" at read/write) ROM code protect level 2 set bits (ROMCP2) (Notes 1, 2)
b3b2
0 0: Protect enabled 0 1: Protect enabled 1 0: Protect enabled 1 1: Protect disabled
ROM code protect reset bits (Note 3)
b5b4
0 0: Protect removed 0 1: Protect set bits effective 1 0: Protect set bits effective 1 1: Protect set bits effective ROM code protect level 1 set bits (ROMCP1) (Note 1)
b7b6
0 0: Protect enabled 0 1: Protect enabled 1 0: Protect enabled 1 1: Protect disabled Notes 1: When ROM code protect is turned on, the internal flash memory is protected against readout or modification in parallel I/O mode. 2: When ROM code protect level 2 is turned on, ROM code readout by a shipment inspection LSI tester, etc. also is inhibited. 3: The ROM code protect reset bits can be used to turn off ROM code protect level 1 and ROM code protect level 2. However, since these bits cannot be modified in parallel I/O mode, they need to be rewritten in serial I/O mode or CPU rewrite mode.
Fig. 152 Structure of ROM code protect control register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
ID Code Check Function
Use this function in standard serial I/O mode. When the contents of the flash memory are not blank, the ID code sent from the programmer is compared with the ID code written in the flash memory to see if they match. If the ID codes do not match, the commands sent from the programmer are not accepted. The ID code consists of 8-bit data, and its areas are FFD416 to FFDA16. Write a program which has had the ID code preset at these addresses to the flash memory.
Address FFD416 FFD516 FFD616 FFD716 FFD816 FFD916 FFDA16 FFDB16 ID1 ID2 ID3 ID4 ID5 ID6 ID7 ROM cord protect control Interrupt vector area
Fig. 153 ID code store addresses
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(2) Parallel I/O Mode
Parallel I/O mode is the mode which parallel output and input software command, address, and data required for the operations (read, program, erase, etc.) to a built-in flash memory. Use the exclusive external equipment flash programmer which supports the 38K2 Group (flash memory version). Refer to each programmer maker's handling manual for the details of the usage.
User ROM and Boot ROM Areas
In parallel I/O mode, the user ROM and boot ROM areas shown in Figure 146 can be rewritten. Both areas of flash memory can be operated on in the same way. The boot ROM area is 4 Kbytes in size. It is located at addresses F00016 through FFFF16. Make sure program and block erase operations are always performed within this address range. (Access to any location outside this address range is prohibited.) In the Boot ROM area, an erase block operation is applied to only one 4 Kbyte block. The boot ROM area has had a standard serial I/O mode control program stored in it when shipped from the Mitsubishi factory. Therefore, using the device in standard serial I/O mode, you must perform program and block erase in the user ROM area.
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
(3) Standard Serial I/O Mode
The standard serial I/O mode inputs and outputs the software commands, addresses and data needed to operate (read, program, erase, etc.) the internal flash memory. This I/O is clock synchronized serial. This mode requires a purpose-specific peripheral unit.The standard serial I/O mode is different from the parallel I/O mode in that the CPU controls flash memory rewrite (uses the CPU rewrite mode), rewrite data input and so forth. The standard serial I/O mode is started by connecting "H" to the P16 (CE) pin and "H" to the P42 (SCLK) pin and "H" to the CNVSS (VPP) pin (apply 4.5 V to 5.25 V to Vpp from an external source), and releasing the reset operation. (In the ordinary microcomputer mode, set CNVss pin to "L" level.) This control program is written in the Boot ROM area when the product is shipped from Renesas Technology Corp.. Accordingly, make note of the fact that the standard serial I/O mode cannot be used if the Boot ROM area is rewritten in parallel I/O mode. Figure 154 shows the pin connections for the standard serial I/O mode. In standard serial I/O mode, serial data I/O uses the four serial I/O pins SCLK, RxD, TxD and SRDY (BUSY). The SCLK pin is the transfer clock input pin through which an external transfer clock is input. The TxD pin is for CMOS output. The SRDY (BUSY) pin outputs "L" level when ready for reception and "H" level when reception starts. Serial data I/O is transferred serially in 8-bit units. In standard serial I/O mode, only the User ROM area shown in Figure 146 can be rewritten. The Boot ROM area cannot. In standard serial I/O mode, a 7-byte ID code is used. When there is data in the flash memory, commands sent from the peripheral unit (programmer) are not accepted unless the ID code matches.
Outline Performance (Standard Serial I/O Mode)
In standard serial I/O mode, software commands, addresses and data are input and output between the MCU and peripheral units (serial programer, etc.) using 4-wire clock-synchronized serial I/O. In reception, software commands, addresses and program data are synchronized with the rise of the transfer clock that is input to the SCLK pin, and are then input to the MCU via the RxD pin. In transmission, the read data and status are synchronized with the fall of the transfer clock, and output from the TxD pin. The TxD pin is for CMOS output. Transfer is in 8-bit units with LSB first. When busy, such as during transmission, reception, erasing or program execution, the SRDY (BUSY) pin is "H" level. Accordingly, always start the next transfer after the SRDY (BUSY) pin is "L" level. Also, data and status registers in a memory can be read after inputting software commands. Status, such as the operating state of the flash memory or whether a program or erase operation ended successfully or not, can be checked by reading the status register. Here following explains software commands, status registers, etc.
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Table 12 Description of pin function (Standard Serial I/O Mode) Pin name VCC,VSS VCCE CNVSS CNVSS2 VREF DVCC, PVCC PVSS RESET XIN XOUT USBVREF TrON D0+,D0D1+,D1D2+,D2P00 to P07 P10 to P15 P16 P17 P20 to P24 P30 to P37 P40 P41 P42 P43 P50 to P57 P60 to P63 Signal name Power supply Power supply VPP CNVSS2 Analog reference voltage Analog power supply Analog power supply Reset input Clock input Clock output USB reference voltage input USB reference voltage output USB upstream input USB downstream input USB downstream input Input port P0 Input port P1 Input port P1 Input port P1 Input port P2 Input port P3 RxD input TxD output SCLK input BUSY output Input port P5 Input port P6 I/O Function Apply 3.00 to 5.25 V (L version) to the Vcc pin and 0 V to the Vss pin. Connect this pin to Vcc. Connect this pin to VPP (VPP = 4.50 to 5.25 V). Connect this pin to Vss. Connect this pin to Vcc when not using. Connect this pin to Vcc. Connect this pin to Vss. To reset, input "L" level for 20 cycles or longer clocks of . Connect a ceramic or crystal resonator between the XIN and XOUT pins. When entering an externally drived clock, enter it from XIN and leave XOUT open. Connect this pin to Vcc when not using. Leave this pin open when not using. Input "L" level when not using. Input "L" level when not using. Input "L" level when not using. Input "L" or "H" level, or keep open. Input "L" or "H" level, or keep open. Input "L" or "H" level, or keep open.Input "H" level only at release of reset. Input "L" or "H" level, or keep open. Input "L" or "H" level, or keep open. Input "L" or "H" level, or keep open. This is a serial data input pin. This is a serial data output pin. This is a serial clock input pin.Input "H" level only at release of reset. This is a BUSY output pin. Input "L" or "H" level, or keep open. Input "L" or "H" level, or keep open.
I I I
I I O I O I/O I/O I/O I I I I I I I O I O I I
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
P05 P04 P03 P02 P01 P00 P57 P56 P55 P54 P53 P52/INT1 P51/CNTR0 P50/INT0 P27 P26
Vcc Vss
36 35
44 43 42
40 39 38
37
34 33
47 46 45
48
41
RXD TXD SCLK BUSY
P06 P07 P40/EXDREQ/RXD P41/EXDACK/TXD P42/EXTC/SCLK P43/EXA1/SRDY P30 P31 P32 P33/EXINT P34/EXCS P35/EXWR P36/EXRD P37/EXA0 P10/DQ0/AN0 P11/DQ1/AN1
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
13 14 8 9 10 11 12 15 16 1 4 5 6 7 2 3
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
M38K29F8LFP/HP
P25 P24 D2+ D2D1+ D1D0D0+ TrON USBVREF DVCC PVCC PVSS P63(LED3) P62(LED2) P61(LED1)
Mode setup method Signal CNVss SCLK RESET CE Value 4.5 to 5.25 V Vcc (Note 2) Vss Vcc Vcc (Note 2) (Note 1)
VPP
RESET
CE
Notes 1: Connect to Vcc in the case of Vcc = 4.5 V to 5.25 V. Connect to VPP (= 4.5 V to 5.25 V) in the case of Vcc = 3.0 V to 4.5 V. 2: Supply Vcc at releasimg Reset.
Package outline: PLQP0064GA-A, PLQP0064KB-A
Fig. 154 Pin connection diagram in standard serial I/O mode
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P12/DQ2/AN2 P13/DQ3/AN3 P14/DQ4/AN4 P15/DQ5/AN5 P16/DQ6/AN6 P17/DQ7/AN7 CNVSS RESET VCCE VREF VSS XIN XOUT VCC CNVSS2 P60(LED0)
Connect to oscillator circuit.
HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Software Commands
Table 13 lists software commands. In standard serial I/O mode, erase, program and read are controlled by transferring software commands via the RxD pin. Software commands are explained Table 13 Software commands (Standard serial I/O mode) Control command 1 Page read 1st byte transfer FF16 2nd byte Address (middle) Address (middle) D016 SRD output SRD1 output 3rd byte Address (high) Address (high)
here below. Basically, the software commands of the standard serial I/O mode are the same as that of the parallel I/O mode, but the block erase function is excluded, and 4 commands are added: ID check, download, version data output and Boot ROM area output functions. 4th byte Data output Data input 5th byte Data output Data input 6th byte Data output Data input ..... Data output to 259th byte Data input to 259th byte When ID is not verified Not acceptable Not acceptable Not acceptable Acceptable Not acceptable
2
Page program
4116
3 4 5 6 7
Erase all blocks Read status register Clear status register ID check function Download function
A716 7016 5016 F516 FA16
Address (low) Size (low)
Address (middle) Size (high)
Address (high) Checksum
ID size Data input
ID1 To required number of times Version data output Data output
To ID7
Acceptable Not acceptable
8
Version data output function
FB16
9
Boot ROM area output function
FC16
Version data output Address (middle)
Version data output Address (high)
Version data output Data output
Version data output Data output
Version data output to 9th byte Data output to 259th byte
Acceptable
Not acceptable
Notes1: Shading indicates transfer from the internal flash memory microcomputer to a programmer. All other data is transferred from a programmer to the internal flash memory microcomputer. 2: SRD refers to status register data. SRD1 refers to status register 1 data. 3: All commands can be accepted when the flash memory is totally blank. 4: Address low is A0 to A7; Address middle is A8 to A15; Address high is A16 to A23. Address-high A16 to A23 are always "0016".
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
The contents of software commands are explained as follows. qPage Read Command This command reads the specified page (256 bytes) in the flash memory sequentially one byte at a time. Execute the page read command as explained here following.
(1) Transfer the "FF16" command code with the 1st byte. (2) Transfer addresses A8 to A15 and A16 to A23 with the 2nd and 3rd bytes respectively. (3) From the 4th byte onward, data (D0 to D7) for the page (256 bytes) specified with addresses A8 to A23 will be output sequentially from the smallest address first synchronized with the fall of the clock.
SCLK
RxD
FF16
A8 to A15
A16 to A23 data0 data255
TxD
SRDY (BUSY)
Fig. 155 Timing for page read
qRead Status Register Command This command reads status information. When the "7016" command code is transferred with the 1st byte, the contents of the status register (SRD) with the 2nd byte and the contents of status register 1 (SRD1) with the 3rd byte are read.
SCLK
RxD
7016
TxD
SRD output
SRD1 output
SRDY (BUSY)
Fig. 156 Timing for reading status register
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
qClear Status Register Command This command clears the bits (SR3 to SR5) which are set when the status register operation ends in error. When the "5016" command code is sent with the 1st byte, the aforementioned bits are cleared. When the clear status register operation ends, the SRDY (BUSY) signal changes from "H" to "L" level.
SCLK
RxD
5016
TxD
SRDY (BUSY)
Fig. 157 Timing for clear status register
qPage Program Command This command writes the specified page (256 bytes) in the flash memory sequentially one byte at a time. Execute the page program command as explained here following. (1) Transfer the "4116" command code with the 1st byte. (2) Transfer addresses A8 to A15 and A16 to A23 with the 2nd and 3rd bytes respectively.
(3) From the 4th byte onward, as write data (D0 to D7) for the page (256 bytes) specified with addresses A8 to A23 is input sequentially from the smallest address first, that page is automatically written. When reception setup for the next 256 bytes ends, the SRDY (BUSY) signal changes from "H" to "L" level. The result of the page program can be known by reading the status register. For more information, see the section on the status register.
SCLK
RxD
4116
A8 to A15
A16 to data0 A23
data255
TxD
SRDY (BUSY)
Fig. 158 Timing for page program
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
qErase All Blocks Command This command erases the contents of all blocks. Execute the erase all blocks command as explained here following. (1) Transfer the "A716" command code with the 1st byte. (2) Transfer the verify command code "D016" with the 2nd byte. With the verify command code, the erase operation will start and continue for all blocks in the flash memory.
When erase all blocks end, the SRDY (BUSY) signal changes from "H" to "L" level. The result of the erase operation can be known by reading the status register.
SCLK
RxD
A716
D016
TxD
SRDY (BUSY)
Fig. 159 Timing for erase all blocks
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
qDownload Command This command downloads a program to the RAM for execution. Execute the download command as explained here following. (1) Transfer the "FA16" command code with the 1st byte. (2) Transfer the program size with the 2nd and 3rd bytes. (3) Transfer the check sum with the 4th byte. The check sum is added to all data sent with the 5th byte onward. (4) The program to execute is sent with the 5th byte onward. When all data has been transmitted, if the check sum matches, the downloaded program is executed. The size of the program will vary according to the internal RAM.
SCLK
RxD
FA16
Data size Data size (low) (high)
Check sum
Program data
TxD
Program data
SRDY (BUSY)
Fig. 160 Timing for download
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
qVersion Information Output Command This command outputs the version information of the control program stored in the Boot ROM area. Execute the version information output command as explained here following.
(1) Transfer the "FB16" command code with the 1st byte. (2) The version information will be output from the 2nd byte onward. This data is composed of 8 ASCII code characters.
SCLK
RxD
FB16
TxD
`V'
`E'
`R'
`X'
SRDY (BUSY)
Fig. 161 Timing for version information output
qBoot ROM Area Output Command This command reads the control program stored in the Boot ROM area in page (256 bytes) unit. Execute the Boot ROM area output command as explained here following.
(1) Transfer the "FC16" command code with the 1st byte. (2) Transfer addresses A8 to A15 and A16 to A23 with the 2nd and 3rd bytes respectively. (3) From the 4th byte onward, data (D0 to D7) for the page (256 bytes) specified with addresses A8 to A23 will be output sequentially from the smallest address first synchronized with the fall of the clock.
SCLK
RxD
FC16
A8 to A15
A1 6 to A23
TxD
data0
data255
SRDY (BUSY)
Fig. 162 Timing for Boot ROM area output
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
qID Check This command checks the ID code. Execute the boot ID check command as explained here following.
(1) Transfer the "F516" command code with the 1st byte. (2) Transfer addresses A0 to A7, A8 to A15 and A16 to A23 ("0016") of the 1st byte of the ID code with the 2nd, 3rd and 4th respectively. (3) Transfer the number of data sets of the ID code with the 5th byte. (4) Transfer the ID code with the 6th byte onward, starting with the 1st byte of the code.
SCLK
RxD
F516
D416
FF16
0016
ID size
ID1
ID7
TxD
SRDY (BUSY)
Fig. 163 Timing for ID check qID Code When the flash memory is not blank, the ID code sent from the serial programmer and the ID code written in the flash memory are compared to see if they match. If the codes do not match, the command sent from the serial programmer is not accepted. An ID code contains 8 bits of data. Area is, from the 1st byte, addresses FFD416 to FFDA16. Write a program into the flash memory, which already has the ID code set for these addresses.
Address FFD416 FFD516 FFD616 FFD716 FFD816 FFD916 FFDA16 FFDB16 ID1 ID2 ID3 ID4 ID5 ID6 ID7 ROM code protect control Interrupt vector area
Fig. 164 ID code storage addresses
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
qStatus Register (SRD) The status register indicates operating status of the flash memory and status such as whether an erase operation or a program ended successfully or in error. It can be read by writing the read status register command (7016). Also, the status register is cleared by writing the clear status register command (5016). Table 14 lists the definition of each status register bit. After releasing the reset, the status register becomes "8016".
*Sequencer status (SR7) The sequencer status indicates the operating status of the the flash memory. After power-on and recover from deep power down mode, the sequencer status is set to "1" (ready). This status bit is set to "0" (busy) during write or erase operation and is set to "1" upon completion of these operations. *Erase status (SR5) The erase status indicates the operating status of erase operation. If an erase error occurs, it is set to "1". When the erase status is cleared, it is set to "0". *Program status (SR4) The program status indicates the operating status of write operation. If a write error occurs, it is set to "1". When the program status is cleared, it is set to "0".
Table 14 Status register (SRD)
Definition
SRD0 bits SR7 (bit7) SR6 (bit6) SR5 (bit5) SR4 (bit4) SR3 (bit3) SR2 (bit2) SR1 (bit1) SR0 (bit0) Status name Sequencer status Reserved Erase status Program status Reserved Reserved Reserved Reserved
"1"
Ready Terminated in error Terminated in error -
"0"
Busy Terminated normally Terminated normally -
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
qStatus Register 1 (SRD1) The status register 1 indicates the status of serial communications, results from ID checks and results from check sum comparisons. It can be read after the SRD by writing the read status register command (7016). Also, status register 1 is cleared by writing the clear status register command (5016). Table 15 lists the definition of each status register 1 bit. This register becomes "0016" when power is turned on and the flag status is maintained even after the reset.
*Boot update completed bit (SR15) This flag indicates whether the control program was downloaded to the RAM or not, using the download function. *Check sum consistency bit (SR12) This flag indicates whether the check sum matches or not when a program, is downloaded for execution using the download function. *ID check completed bits (SR11 and SR10) These flags indicate the result of ID checks. Some commands cannot be accepted without an ID check. *Data reception time out (SR9) This flag indicates when a time out error is generated during data reception. If this flag is attached during data reception, the received data is discarded and the MCU returns to the command wait state.
Table 15 Status register 1 (SRD1)
SRD1 bits SR15 (bit7) SR14 (bit6) SR13 (bit5) SR12 (bit4) SR11 (bit3) SR10 (bit2)
Status name Boot update completed bit Reserved Reserved Checksum match bit ID check completed bits
Definition "1" Update completed Match 00 01 10 11 Not verified Verification mismatch Reserved Verified Normal operation "0" Not Update Mismatch
SR9 (bit1) SR8 (bit0)
Data reception time out Reserved
Time out -
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Full Status Check
Results from executed erase and program operations can be known by running a full status check. Figure 165 shows a flowchart of the full status check and explains how to remedy errors which occur.
Read status register
SR4 = 1 and SR5 = 1 ? NO SR5 = 0 ? YES SR4 = 0 ? YES
YES
Command sequence error
Execute the clear status register command (5016) to clear the status register. Try performing the operation one more time after confirming that the command is entered correctly. Should an erase error occur, the block in error cannot be used.
NO
Erase error
NO
Program error
Should a program error occur, the block in error cannot be used.
End (Erase, program)
Note: When one of SR5 to SR4 is set to "1" , none of the program, erase all blocks, and block erase commands is accepted. Execute the clear status register command (5016) before executing these commands.
Fig. 165 Full status check flowchart and remedial procedure for errors
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION
Example Circuit Application for Standard Serial I/ O Mode
Figure 166 shows a circuit application for the standard serial I/O mode. Control pins will vary according to a programmer, therefore see a programmer manual for more information.
VCC
VCC
Clock input BUSY output Data input Data output
SCLK SRDY (BUSY) RxD TxD
P16 (CE)
M38K29F8L
VPP power source input
CNVss
Notes 1: Control pins and external circuitry will vary according to a programmer. For more information, see the programmer manual. 2: In this example, the VPP power supply is supplied from an external source (programmer). To use the user's power source, connect to 4.5 V to 5.25 V.
Fig. 166 Example circuit application for standard serial I/O mode
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HARDWARE 38K2 Group NOTES ON PROGRAMMING
NOTES ON PROGRAMMING Processor Status Register
The contents of the processor status register (PS) after a reset are undefined, except for the interrupt disable flag (I) which is "1." After a reset, initialize flags which affect program execution. In particular, it is essential to initialize the index X mode (T) and the decimal mode (D) flags because of their effect on calculations.
Instruction Execution Time
The instruction execution time is obtained by multiplying the frequency of the internal clock by the number of cycles needed to execute an instruction. However, When using the USB function or EXB function, an occurrence of one-wait due to the multichannel RAM will double an internal clock cycle.
Interrupts
The contents of the interrupt request bits do not change immediately after they have been written. After writing to an interrupt request register, execute at least one instruction before performing a BBC or BBS instruction.
Decimal Calculations
* To calculate in decimal notation, set the decimal mode flag (D) to "1", then execute an ADC or SBC instruction. After executing an ADC or SBC instruction, execute at least one instruction before executing a SEC, CLC, or CLD instruction. * In decimal mode, the values of the negative (N), overflow (V), and zero (Z) flags are invalid.
Timers
* When n (0 to 255) is written to a timer latch, the frequency division ratio is 1/(n+1). * When a count source of timer X is switched, stop a count of timer X.
Multiplication and Division Instructions
* The index X mode (T) and the decimal mode (D) flags do not affect the MUL and DIV instruction. * The execution of these instructions does not change the contents of the processor status register.
Ports
The contents of the port direction registers cannot be read. The following cannot be used: * The data transfer instruction (LDA, etc.) * The operation instruction when the index X mode flag (T) is "1" * The addressing mode which uses the value of a direction register as an index * The bit-test instruction (BBC or BBS, etc.) to a direction register * The read-modify-write instructions (ROR, CLB, or SEB, etc.) to a direction register. Use instructions such as LDM and STA, etc., to set the port direction registers.
A/D Converter
The comparator uses capacitive coupling amplifier whose charge will be lost if the clock frequency is too low. Therefore, make sure that f(system clock) in the middle/highspeed mode is at least on 500 kHz during an A/D conversion. Do not execute the STP or WIT instruction during an A/D conversion.
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HARDWARE 38K2 Group NOTES ON PROGRAMMING
Definition of A/D Conversion Accuracy
The A/D conversion accuracy is defined below (refer to Figure 167). *Relative accuracy Zero transition voltage (VOT) This means an analog input voltage when the actual A/D conversion output data changes from "0" to "1." Full-scale transition voltage (VFST) This means an analog input voltage when the actual A/D conversion output data changes from "1023" to "1022."
Non-linearity error This means a deviation from the line between VOT and VFST of a converted value between VOT and VFST. Differential non-linearity error This means a deviation from the input potential difference required to change a converted value between VOT and VFST by 1 LSB of the 1 LSB at the relative accuracy. *Absolute accuracy This means a deviation from the ideal characteristics between 0 to VREF of actual A/D conversion characteristics.
Output data Full-scale transition voltage (VFST)
1023 1022
Differential non-linearity error= b-a [LSB] a c Non-linearity error= a [
b a
LSB]
n+1 n
Actual A/D conversion characteristics c a: 1LSB at relative accuracy b: Vn+1-Vn c: Difference between the ideal Vn and actual Vn
Ideal line of A/D conversion between V0 to V1022
1 0
V0 V1 Zero transition voltage (V0T)
Vn
Vn+1
V1022
Analog voltage
VREF
Fig. 167 Definition of A/D conversion accuracy
Vn: Analog input voltage when the output data changes from "n" to "n + 1" (n = 0 to 1022) VFST - VOT 1022 VREF * 1 LSB at absolute accuracy 1024 * 1 LSB at relative accuracy (V) (V)
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HARDWARE 38K2 Group NOTES ON USAGE/DATA REQUIRED FOR MASK ORDERS
NOTES ON USAGE Power Source Voltage
When the power source voltage value of a microcomputer is less than the value which is indicated as the recommended operating conditions, the microcomputer does not operate normally and may perform unstable operation. In a system where the power source voltage drops slowly when the power source voltage drops or the power supply is turned off, reset a microcomputer when the power source voltage is less than the recommended operating conditions and design a system not to cause errors to the system by this unstable operation.
USB Communication
In applications requiring high-reliability, we recommend providing the system with protective measures such as USB function initialization by software or USB reset by the host to prevent USB communication from being terminated unexpectedly, for example due to external causes such as noise.
Flash Memory Version
The CNVss pin is connected to the internal memory circuit block by a low-ohmic resistance, since it has the multiplexed function to be a programmable power source pin (VPP pin) as well. To improve the noise reduction, connect a track between CNVss pin and Vss pin or Vcc pin with 1 to 10 k resistance. The mask ROM version track of CNVss pin has no operational interference even if it is connected to Vss pin or Vcc pin via a resistor.
Handling of Power Source Pin
In order to avoid a latch-up occurrence, connect a capacitor suitable for high frequencies as bypass capacitor between power source pin (Vcc pin) and GND pin (Vss pin). Besides, connect the capacitor to as close as possible. For bypass capacitor which should not be located too far from the pins to be connected, a ceramic or electrolytic capacitor of 1.0 F is recommended.
Electric Characteristic Differences Between Mask ROM and Flash Memory Version MCUs
There are differences in electric characteristics, operation margin, noise immunity, and noise radiation between Mask ROM and Flash Memory version MCUs due to the difference in the manufacturing processes. When manufacturing an application system with the Flash Memory version and then switching to use of the Mask ROM version, please perform sufficient evaluations for the commercial samples of the Mask ROM version.
USB Port Pins (D0+, D0-, D1+, D1-, D2+, D2-) Treatment
*The USB specification requires a driver-impedance 28 to 44 . In order to meet the USB specification impedance requirements, connect a resistor (27 recommended) in series to the USB port pins. In addition, in order to reduce the ringing and control the falling/ rising timing and a crossover point, connect a capacitor between the USB port pins and the Vss pin if necessary. The values and structure of those peripheral elements depend on the impedance characteristics and the layout of the printed circuit board. Accordingly, evaluate your system and observe waveforms before actual use and decide use of elements and the values of resistors and capacitors. *Make sure the USB D+/D- lines do not cross any other wires. Keep a large GND area to protect the USB lines. Also, make sure you use a USB specification compliant connecter for the connection.
DATA REQUIRED FOR MASK ORDERS
The following are necessary when ordering a mask ROM production: 1. Mask ROM Order Confirmation Form 2. Mark Specification Form 3. Data to be written to ROM, in EPROM form (three identical copies) or one floppy disk. For the mask ROM confirmation and the mark specifications, refer to the "Renesas Technology Corp." Homepage (http://www.renesas.com).
USBVREF pin Treatment (Noise Elimination)
*Connect a capacitor between the USBVREF pin and the Vss pin. The capacitor should have a 2.2 F capacitor (electrolytic capacitor) and a 0.1 F capacitor (ceramic type capacitor) connected in parallel. *In Vcc = 3.0 to 3.6 V operation, connect the USBVREF pin directly to the Vcc pin in order to supply power to the USB port circuit. In addition, you will need to disable the built-in USB reference voltage circuit in this operation (set bit 4 of the USB control register to "0".) If you are using the bus powered supply in this condition, the DC-DC converter must be placed outside the MCU. *In Vcc = 4.00 to 5.25 V operation, do not connect the external DC-DC converter to the USBVREF pin. Use the built-in USB reference voltage circuit.
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION SUPPLEMENT
FUNCTIONAL DESCRIPTION SUPPLEMENT A/D Converter
A/D conversion is started by setting AD conversion completion bit to "0." During A/D conversion, internal operations are performed as follows. 1. After the start of A/D conversion, AD conversion register goes to "0016." 2. The highest-order bit of AD conversion register is set to "1," and the comparison voltage Vref is input to the comparator. Then, Vref is compared with analog input voltage VIN. 3. As a result of comparison, when Vref < VIN, the highest-order bit of AD conversion register becomes "1." When Vref > VIN, the highest-order bit becomes "0."
By repeating the above operations up to the lowest-order bit of the AD conversion register, an analog value converts into a digital value. A/D conversion completes at 122 clock cycles (15.25 s at system clock = 8 MHz, Through mode) after it is started, and the result of the conversion is stored into the AD conversion register. Concurrently with the completion of A/D conversion, A/D conversion interrupt request occurs, so that the AD conversion interrupt request bit is set to "1."
Table 16 Relative formula for a reference voltage VREF of A/D converter and Vref When n = 0 When n = 1 to 1023 Vref = 0 Vref = VREF n 1024
n: Value of A/D converter (decimal numeral) Table 17 Change of AD conversion register during A/D conversion Change of AD conversion register At start of conversion First comparison Second comparison Third comparison Value of comparison voltage (Vref)
0 1
1
0 0 1
0 0 0 1
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
VREF 2 VREF 2 VREF 2
0
VREF 4 VREF 4 VREF 8
1 2
After completion of tenth comparison
A result of A/D conversion
1 2 3 4 5 6 7 8 9 0 1
VREF 2
VREF 4
****
VREF 1024
1-10: A result of the first comparison to the tenth comparison
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HARDWARE 38K2 Group FUNCTIONAL DESCRIPTION SUPPLEMENT
Figures 168 shows the A/D conversion equivalent circuit, and Figure 169 shows the A/D conversion timing chart.
VCC About 2 kW AN0 AN1 AN2 AN3 AN4 AN5 AN6 AN7
VSS VIN
Sampling clock
VCC VSS
C
Chopper amplifier AD conversion register 2
AD conversion register 1 b2 b1 b0 AD control register AD conversion interrupt request
VREF
Built-in D/A converter
Vref
Reference clock
VSS
Fig. 168 A/D conversion equivalent circuit
Write signal for AD control register
61 cycles
AD conversion completion bit Sampling clock
Fig. 169 A/D conversion timing chart
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CHAPTER 2 APPLICATION
2.1 I/O port 2.2 Interrupt 2.3 Timer 2.4 Serial I/O 2.5 USB function 2.6 HUB function 2.7 External bus interface (EXB) 2.8 A/D converter 2.9 Watchdog timer 2.10 Reset 2.11 Frequency synthesizer (PLL) 2.12 Clock generating circuit 2.13 Standby function 2.14 Flash memory
APPLICATION 38K2 Group 2.1 I/O port
2.1 I/O port
This paragraph explains the registers setting method and the notes related to the I/O ports. 2.1.1 Memory map
000016 000116 000216 000316 000416 000516 000616 000716 000816 000916 000A16
Port P0 (P0) Port P0 direction register (P0D) Port P1 (P1) Port P1 direction register (P1D) Port P2 (P2) Port P2 direction register (P2D) Port P3 (P3) Port P3 direction register (P3D) Port P4 (P4) Port P4 direction register (P4D) Port P5 (P5)
000B16 Port P5 direction register (P5D) 000C16 Port P6 (P6) 000D16 Port P6 direction register (P6D) 0FF016 0FF216 Port P0 pull-up control register (PULL0) Port P5 pull-up control register (PULL5)
Fig. 2.1.1 Memory map of registers related to I/O port
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APPLICATION 38K2 Group 2.1 I/O port
2.1.2 Related registers
Port Pi
b7 b6 b5 b4 b3 b2 b1 b0 Port Pi (Pi) (i = 0, 1, 2, 3, 4, 5, 6) (Note) [Address : 0016, 0216, 0416, 0616, 0816, 0A16, 0C16]
B 0 Port Pi0 1 Port Pi1
Name
q
Function
In output mode Write Port latch Read In input mode Write : Port latch Read : Value of pins
At reset
RW
? ? ? ? ? ? ? ?
q
2 Port Pi2 3 Port Pi3 4 Port Pi4 5 Port Pi5 6 Port Pi6 7 Port Pi7
Note: Since the following ports are not allocated, the corrrsponding bits can not be used. * P20 to P23 * P44 to P47 * P64 to P67
Fig. 2.1.2 Structure of Port Pi (i = 0 to 6)
Port Pi direction register
b7 b6 b5 b4 b3 b2 b1 b0 Port Pi direction register (PiD) (i = 0, 1, 2, 3, 4, 5, 6) (Note) [Address : 0116, 0316, 0516, 0716, 0916, 0B16, 0D16]
B
Name
Function
0 : Port Pi0 input mode 1 : Port Pi0 output mode 0 : Port Pi1 input mode 1 : Port Pi1 output mode 0 : Port Pi2 input mode 1 : Port Pi2 output mode 0 : Port Pi3 input mode 1 : Port Pi3 output mode 0 : Port Pi4 input mode 1 : Port Pi4 output mode 0 : Port Pi5 input mode 1 : Port Pi5 output mode 0 : Port Pi6 input mode 1 : Port Pi6 output mode 0 : Port Pi7 input mode 1 : Port Pi7 output mode
At reset
RW

0 Port Pi direction register 1 2 3 4 5 6 7
0 0 0 0 0 0 0 0
Note: Since the following ports are not allocated, the corrrsponding bits can not be used. * P20 to P23 * P44 to P47 * P64 to P67 Do not set bits of the direction register corresponding to ports P20-P23 (bits 0-3 of port P2 direction register (address 0516)) to output mode ("1"). If writing to these bits, write "0".
Fig. 2.1.3 Structure of Port Pi direction register (i = 0 to 6)
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APPLICATION 38K2 Group 2.1 I/O port
Port P0 pull-up control register
b7 b6 b5 b4 b3 b2 b1 b0
Port P0 pull-up control register (PULL0) [Address : 0FF016]
B 0 1 2 3 4 5
Name
P00 pul l-up control bit P00 pul l-up control bit P00 pul l-up control bit P00 pul l-up control bit P00 pul l-up control bit P00 pul l-up control bit
Function
0 : No pull-up 1 : Pull-up 0 : No pull-up 1 : Pull-up 0 : No pull-up 1 : Pull-up 0 : No pull-up 1 : Pull-up 0 : No pull-up 1 : Pull-up 0 : No pull-up 1 : Pull-up 0 : No pull-up 1 : Pull-up 0 : No pull-up 1 : Pull-up
At reset
RW
0 0 0 0 0 0 0 0
6 P00 pul l-up control bit 7
P00 pul l-up control bit
Fig. 2.1.4 Structure of Port P0 pull-up control register
Port P5 pull-up control register
b7 b6 b5 b4 b3 b2 b1 b0
Port P5 pull-up control register (PULL5) [Address : 0FF216]
B
Name
Function
0 : No pull-up 1 : Pull-up
At reset
RW
0 P50 pul l-up control bit 1
0 0 0 0 0 0 0 0
Nothing is arranged for this bit. This is a write disabled bit. When this bit is read out, the contents are "0".
2 P52 pul l-up control bit 3 4 5 6 7
0 : No pull-up 1 : Pull-up
Nothing is arranged for these bits. These are write disabled bits. When these bits are read out, the contents are "0".
Fig. 2.1.5 Structure of Port P5 pull-up control register
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APPLICATION 38K2 Group 2.1 I/O port
2.1.3 Handling of unused pins Table 2.1.1 Handling of unused pins Handling Pins/Ports name P0, P1, P2, P3, P4, *Set to the input mode and connect each to Vcc or Vss through a resistor of 1 k to 10 k. P5, P6 *Set to the output mode and open at "L" or "H" level. VREF XOUT USBVREF TrON D0+, D0-, D1+, D1-, D2+, D2*Connect to Vss (GND). *Open, only when using an external clock. *Connect to VCC *Open *Connect each to Vss through a resistor of 1 k to 10 k.
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APPLICATION 38K2 Group 2.1 I/O port
2.1.4 Notes on input and output pins (1) Modifying output data with bit managing instruction When the port latch of an I/O port is modified with the bit managing instruction*1, the value of the unspecified bit may be changed. q Reason The bit managing instructions are read-modify-write form instructions for reading and writing data by a byte unit. Accordingly, when these instructions are executed on a bit of the port latch of an I/O port, the following is executed to all bits of the port latch. * As for a bit which is set for an input port : The pin state is read in the CPU, and is written to this bit after bit managing. * As for a bit which is set for an output port : The bit value of the port latch is read in the CPU, and is written to this bit after bit managing. Note the following : * Even when a port which is set as an output port is changed for an input port, its port latch holds the output data. * As for a bit of the port latch which is set for an input port, its value may be changed even when not specified with a bit managing instruction in case where the pin state differs from its port latch contents. * 1 bit managing instructions : SEB, and CLB instructions
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APPLICATION 38K2 Group 2.1 I/O port
2.1.5 Termination of unused pins (1) Terminate unused pins I/O ports : * Set the I/O ports for the input mode and connect them to VCC or VSS through each resistor of 1 k to 10 k. With regard to ports which can select the built-in pull-up resistor, the built-in pullup resistor can be used. Set the I/O ports for the output mode and open them at "L" or "H". * When opening them in the output mode, the input mode of the initial status remains until the mode of the ports is switched over to the output mode by the program after reset. Thus, the potential at these pins is undefined and the power source current may increase in the input mode. With regard to an effects on the system, thoroughly perform system evaluation on the user side. * Since the direction register setup may be changed because of a program runaway or noise, set direction registers by program periodically to increase the reliability of program. (2) Termination remarks I/O ports : Do not open in the input mode. q Reason * The power source current may increase depending on the first-stage circuit. * An effect due to noise may be easily produced as compared with proper termination shown in (1). I/O ports : When setting for the input mode, do not connect to VCC or VSS directly. q Reason If the direction register setup changes for the output mode because of a program runaway or noise, a short circuit may occur between a port and VCC (or VSS). I/O ports : When setting for the input mode, do not connect multiple ports in a lump to VCC or VSS through a resistor. q Reason If the direction register setup changes for the output mode because of a program runaway or noise, a short circuit may occur between ports. * At the termination of unused pins, perform wiring at the shortest possible distance (20 mm or less) from microcomputer pins.
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APPLICATION 38K2 Group 2.2 Interrupt
2.2 Interrupt
This paragraph explains the registers setting method and the notes related to the interrupt. 2.2.1 Memory map
003C16 003D16 003E16 003F16
Interrupt request register 1 (IREQ1) Interrupt request register 2 (IREQ2) Interrupt control register 1 (ICON1) Interrupt control register 2 (ICON2)
0FF316
Interrupt edge selection register (INTEDGE)
Fig. 2.2.1 Memory map of registers related to interrupt 2.2.2 Related registers
Interrupt request register 1
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt request register 1 (IREQ1) [Address : 3C16]
B
Name
USB bus reset
Function
0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued
At reset
RW

0 interrupt request bit 1 USB SOF interrupt request bit 2 USB device interrupt request bit 3 EXB interrupt request bit 4 request bit
INT0 interrupt
0 0 0 0 0 0 0 0
interrupt 5 Timer X bit request
6 request bit 7 request bit
Timer 1 interrupt Timer 2 interrupt
"0" can be set by software, but "1" cannot be set.
Fig. 2.2.2 Structure of Interrupt request register 1
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APPLICATION 38K2 Group 2.2 Interrupt
Interrupt request register 2
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt request register 2 (IREQ2) [Address : 3D16]
B
Name
Function
0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued
At reset
RW

INT1 interrupt 0 request bit
0 0 0 0 0 0 0 0
1 USB HUB interrupt request bit
receive 2 Serial I/Orequest bit interrupt transmit 3 Serial I/Orequest bit interrupt
4 request bit
CNTR0 interrupt
5 Key-on wake-up bit interrupt request 6 interrupt request bit 7
A/D conversion
Nothing is arranged for this bits. This is a write disabled bit. When this bit is read out, the contents are "0".
"0" can be set by software, but "1" cannot be set.
Fig. 2.2.3 Structure of Interrupt request register 2
Interrupt control register 1
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt control register 1 (ICON1) [Address : 3E16]
B
Name
USB bus reset
Function
0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled
At reset
RW
0 interrupt enable bit 1 USB SOF interrupt enable bit 2 USB device interrupt enable bit 3 EXB interrupt enable bit 4 enable bit
INT0 interrupt
0 0 0 0 0 0 0 0
interrupt 5 Timer Xbit enable
6 enable bit 7 enable bit
Timer 1 interrupt
Timer 2 interrupt
Fig. 2.2.4 Structure of Interrupt control register 1
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APPLICATION 38K2 Group 2.2 Interrupt
Interrupt control register 2
b7 b6 b5 b4 b3 b2 b1 b0
0
Interrupt control register 2 (ICON2) [Address : 3F16]
B
Name
Function
0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled
At reset
RW
INT1 interrupt 0 enable bit
0 0 0 0 0 0 0 0
1 USB HUB interrupt enable bit
receive 2 Serial I/Oenable bit interrupt transmit 3 Serial I/Oenable bit interrupt
4 enable bit
CNTR0 interrupt
5 Key-on wake-upbit interrupt enable 6
A/D conversion interrupt enable bit
7 Fix this bit to "0".
Fig. 2.2.5 Structure of Interrupt control register 2
Interrupt edge selection register
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt edge selection register (INTEDGE) [Address : 0FF316]
B
0 1 2 3 4 5 6 7
Name
INT0 interrupt edge selection bit
Function
0 : Falling edge active 1 : Rising edge active
At reset
RW
0 0 0 0 0 0 0 0
Nothing is arranged for this bits. This is a write disabled bit. When this bit is read out, the contents are "0".
INT1 interrupt edge selection bit
0 : Falling edge active 1 : Rising edge active
Nothing is arranged for these bits. These are write disabled bits. When these bits are read out, the contents are "0".
Fig. 2.2.6 Structure of Interrupt edge selection register
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APPLICATION 38K2 Group 2.2 Interrupt
2.2.3 Interrupt source The 38K2 group permits interrupts of 16 sources. These are vector interrupts with a fixed priority system. Accordingly, when two or more interrupt requests occur during the same sampling, the higher-priority interrupt is accepted first. This priority is determined by hardware, but a variety of priority processing can be performed by software, using an interrupt enable bit and an interrupt disable flag. For interrupt sources, vector addresses and interrupt priority, refer to Table 2.2.1. Table 2.2.1 Interrupt sources, vector addresses and priority of 38K2 group
Interrupt Source Reset (Note 2) USB bus reset USB SOF USB device Priority 1 2 3 4 Vector Addresses (Note 1) High Low FFFD16 FFFC16 FFFB16 FFFA16 FFF916 FFF716 FFF816 FFF616 Interrupt Request Generating Conditions At reset At detection of USB bus reset signal (2.5 s interval SE0) At detection of USB SOF signal At detection of resume signal (K state or SE0) or suspend signal (3 ms interval bus idle), or at completion of transaction At completion of reception or transmission or at completion of DMA transmission At detection of either rising or falling edge of INT0 input At timer X underflow At timer 1 underflow At timer 2 underflow At detection of either rising or falling edge of INT1 input At detection of status change of USB HUB down ports At completion of serial I/O data reception At completion of serial I/O data transmission At detection of either rising or falling edge of CNTR0 input At falling of conjunction of input level for port P0 (at input mode) At completion of A/D conversion At BRK instruction execution Remarks Non-maskable Valid when USB is selected Valid when USB is selected Valid when USB is selected
External bus
5
FFF516
FFF416
Valid when external bus is selected
INT0 Timer X Timer 1 Timer 2 INT1 USB HUB Serial I/O reception Serial I/O transmission CNTR0 Key-on wake up A/D conversion BRK instruction
6 7 8 9 10 11 12 13 14 15 16 17
FFF316 FFF116 FFEF16 FFED16 FFEB16 FFE916 FFE716 FFE516 FFE316 FFE116 FFDF16 FFDD16
FFF216 FFF016 FFEE16 FFEC16 FFEA16 FFE816 FFE616 FFE416 FFE216 FFE016 FFDE16 FFDC16
External interrupt (active edge selectable) STP release timer underflow External interrupt (active edge selectable) Valid when USB HUB is selected Valid when serial I/O is selected Valid when serial I/O is selected External interrupt (active edge selectable) External interrupt (active edge selectable)
Non-maskable software interrupt
Notes 1: Vector addresses contain interrupt jump destination addresses. 2: Reset function in the same way as an interrupt with the highest priority.
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APPLICATION 38K2 Group 2.2 Interrupt
2.2.4 Interrupt operation When an interrupt request is accepted, the contents of the following registers just before acceptance of the interrupt requests is automatically pushed onto the stack area in the order of , and . High-order contents of program counter (PCH) Low-order contents of program counter (PCL) Contents of processor status register (PS) After the contents of the above registers are pushed onto the stack area, the accepted interrupt vector address enters the program counter and consequently the interrupt processing routine is executed. When the RTI instruction is executed at the end of the interrupt processing routine, the contents of the above registers pushed onto the stack area are restored to the respective registers in the order of , and ; and the microcomputer resumes the processing executed just before acceptance of the interrupts. Figure 2.2.7 shows an interrupt operation diagram.
Executing routine ******* Interrupt occurs (Accepting interrupt request)
Suspended operation
Contents of program counter (high-order) are pushed onto stack Contents of program counter (low-order) are pushed onto stack Contents of processor status register are pushed onto stack Interrupt processing routine RTI instruction Contents of processor status register are popped from stack Contents of program counter (low-order) are popped from stack Contents of program counter (high-order) are popped from stack
Resume processing *******
: Operation commanded by software : Internal operation performed automatically
Fig. 2.2.7 Interrupt operation diagram
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APPLICATION 38K2 Group 2.2 Interrupt
(1) Processing upon acceptance of interrupt request Upon acceptance of an interrupt request, the following operations are automatically performed. The processing being executed is stopped. The contents of the program counter and the processor status register are pushed onto the stack area. Figure 2.2.8 shows the changes of the stack pointer and the program counter upon acceptance of an interrupt request. Concurrently with the push operation, the jump destination address (the beginning address of the interrupt processing routine) of the occurring interrupt stored in the vector address is set in the program counter, then the interrupt processing routine is executed. After the interrupt processing routine is started, the corresponding interrupt request bit is automatically cleared to "0". The interrupt disable flag is set to "1" so that multiple interrupts are disabled. Accordingly, for executing the interrupt processing routine, it is necessary to set the jump destination address in the vector area corresponding to each interrupt.
Program counter PCL Program counter (low-order) PCH Program counter (high-order) Stack pointer S (S) Interrupt request is accepted Program counter PCL PCH Vector address (from Interrupt vector area) Stack pointer S (S) - 3 Interrupt disable flag = "1" (s) - 3 Interrupt disable flag = "0" (S)
Stack area
Stack area
Processor status register Program counter (low-order) (S) Program counter (high-order)
Fig. 2.2.8 Changes of stack pointer and program counter upon acceptance of interrupt request
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APPLICATION 38K2 Group 2.2 Interrupt
(2) Timing after acceptance of interrupt request The interrupt processing routine begins with the machine cycle following the completion of the instruction that is currently being executed. Figure 2.2.9 shows the time up to execution of interrupt processing routine and Figure 2.2.10 shows the timing chart after acceptance of interrupt request.
Interrupt request generated
Start of interrupt processing
Main routine
Waiting time for Stack push and post-processing of Vector fetch pipeline
Interrupt processing routine
0 to 16 cycles
2 cycles
5 cycles
7 to 23 cycles (When f(XIN) = 6 MHz; system clock 8 MHz /through mode (8 MHz), 0.875 s to 2.875 s) When executing DIV instruction
Fig. 2.2.9 Time up to execution of interrupt processing routine
Waiting time for pipeline post-processing
Push onto stack Vector fetch
Interrupt operation starts
SYNC RD WR Address bus Data bus PC Not used
S, SPS S-1, SPS S-2, SPS
BL AL
BH
AL, AH AH
PCH
PCL
PS
SYNC : CPU operation code fetch cycle (This is an internal signal that cannot be observed from the external unit.) BL, BH : Vector address of each interrupt AL, AH : Jump destination address of each interrupt SPS : "0016" or "0116"
Fig. 2.2.10 Timing chart after acceptance of interrupt request
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APPLICATION 38K2 Group 2.2 Interrupt
2.2.5 Interrupt control The acceptance of all interrupts, excluding the BRK instruction interrupt, can be controlled by the interrupt request bit, interrupt enable bit, and an interrupt disable flag, as described in detail below. Figure 2.2.11 shows an interrupt control diagram.
Interrupt request bit Interrupt enable bit Interrupt request Interrupt disable flag BRK instruction Reset
Fig. 2.2.11 Interrupt control diagram The interrupt request bit, interrupt enable bit and interrupt disable flag function independently and do not affect each other. An interrupt is accepted when all the following conditions are satisfied. qInterrupt request bit .......... "1" qInterrupt enable bit ........... "1" qInterrupt disable flag ........ "0" Though the interrupt priority is determined by hardware, a variety of priority processing can be performed by software using the above bits and flag. Table 2.2.2 shows a list of interrupt control bits according to the interrupt source. (1) Interrupt request bits The interrupt request bits are allocated to the interrupt request register 1 (address 3C16) and interrupt request register 2 (address 3D16). The occurrence of an interrupt request causes the corresponding interrupt request bit to be set to "1". The interrupt request bit is held in the "1" state until the interrupt is accepted. When the interrupt is accepted, this bit is automatically cleared to "0". Each interrupt request bit can be set to "0", but cannot be set to "1", by software. (2) Interrupt enable bits The interrupt enable bits are allocated to the interrupt control register 1 (address 003E16) and the interrupt control register 2 (address 3F16). The interrupt enable bits control the acceptance of the corresponding interrupt request. When an interrupt enable bit is "0", the corresponding interrupt request is disabled. If an interrupt request occurs when this bit is "0", the corresponding interrupt request bit is set to "1" but the interrupt is not accepted. In this case, unless the interrupt request bit is set to "0" by software, the interrupt request bit remains in the "1" state. When an interrupt enable bit is "1", the corresponding interrupt is enabled. If an interrupt request occurs when this bit is "1", the interrupt is accepted (when interrupt disable flag = "0"). Each interrupt enable bit can be set to "0" or "1" by software.
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APPLICATION 38K2 Group 2.2 Interrupt
(3) Interrupt disable flag The interrupt disable flag is allocated to bit 2 of the processor status register. The interrupt disable flag controls the acceptance of interrupt request except BRK instruction. When this flag is "1", the acceptance of interrupt requests is disabled. When the flag is "0", the acceptance of interrupt requests is enabled. This flag is set to "1" with the SEI instruction and is set to "0" with the CLI instruction. When a main routine branches to an interrupt processing routine, this flag is automatically set to "1", so that multiple interrupts are disabled. To use multiple interrupts, set this flag to "0" with the CLI instruction within the interrupt processing routine. Figure 2.2.12 shows an example of multiple interrupts. Table 2.2.2 List of interrupt bits according to interrupt source Interrupt source USB bus reset USB SOF USB device External bus INT0 Timer X Timer 1 Timer 2 INT1 USB HUB Serial I/O receive Serial I/O transmit CNTR0 Key-on wake-up A/D converter Interrupt enable bit Address 003E16 003E16 003E16 003E16 003E16 003E16 003E16 003E16 003F16 003F16 003F16 003F16 003F16 003F16 003F16 Bit b0 b1 b2 b3 b4 b5 b6 b7 b0 b1 b2 b3 b4 b5 b6 Interrupt request bit Address 003C16 003C16 003C16 003C16 003C16 003C16 003C16 003C16 003D16 003D16 003D16 003D16 003D16 003D16 003D16 Bit b0 b1 b2 b3 b4 b5 b6 b7 b0 b1 b2 b3 b4 b5 b6
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APPLICATION 38K2 Group 2.2 Interrupt
Interrupt request
Nesting Reset
Time
Main routine I=1 C1 = 0, C2 = 0 Interrupt request 1 C1 = 1 I=0 Interrupt 1 Interrupt request 2 I=1 C2 = 1 I=0 Interrupt 2 I=1 RTI I=0 Multiple interrupt
RTI I=0
I : Interrupt disable flag C1 : Interrupt enable bit of interrupt 1 C2 : Interrupt enable bit of interrupt 2 : Set automatically. : Set by software.
Fig. 2.2.12 Example of multiple interrupts
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APPLICATION 38K2 Group 2.2 Interrupt
2.2.6 INT interrupt The INT interrupt requests is generated when the microcomputer detects a level change of each INT pin (INT0, INT1). (1) Active edge selection INT0 and INT1 can be selected from either a falling edge or rising edge detection as an active edge by the interrupt edge selection register. In the "0" state, the falling edge of the corresponding pin is detected. In the "1" state, the rising edge of the corresponding pin is detected.
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APPLICATION 38K2 Group 2.2 Interrupt
2.2.7 Key input interrupt A key input interrupt request is generated by applying "L" level to any port P0 pin that has been set to the input mode. In other words, it is generated when AND of the input level goes from "1" to "0". (1) Connection example when Key input interrupt is used When using the Key input interrupt, compose an active-low key matrix which inputs to port P0. Figure 2.2.13 shows a connection example and the port P0 block diagram when using a key input interrupt. In the connection example in Figure 2.2.13, a key input interrupt request is generated by pressing one of the keys corresponding to ports P00 to P03.
Port PXx "L" level output
PULL 0 register Bit 7 = "0"

Port P07 direction register = "1" Port P07 latch
Key input interrupt request
P07 output PULL 0 register Bit 6 = "0"

Port P06 direction register = "1" Port P06 latch
P06 output PULL 0 register Bit 5 = "0"

Port P05 direction register = "1" Port P05 latch
P05 output PULL 0 register Bit 4 = "0"

Port P04 direction register = "1" Port P04 latch
P04 output PULL 0 register Bit 3 = "1"

Port P03 direction register = "0" Port P03 latch
Port P0 Input reading circuit
P03 input
PULL 0 register Bit 2 = "1"

Port P02 direction register = "0" Port P02 latch
P02 input
PULL 0 register Bit 1 = "1"

Port P01 direction register = "0"
P01 input
Port P01 latch
PULL 0 register Bit 0 = "1"

Port P00 direction register = "0" Port P00 latch
P00 input
P-channel transistor for pull-up CMOS output buffer
Fig. 2.2.13 Connection example and port P0 block diagram when using key input interrupt
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APPLICATION 38K2 Group 2.2 Interrupt
(2) Related registers setting Figure 2.2.14 shows the related registers setting (corresponding to Figure 2.2.13).
Port P0 direction register (address 0116)
b7 b0
P0D
11110000 Bits corresponding to P07 to P00 0: Input port 1: Output port
Port P0 pull-up control register (address 0FF016)
b7 b0
PULL0
1111 P00 to P03 pull-up
Interrupt request register 2 (address 3D16)
b7 b0
IREQ2
0
Key-on wake-up interrupt request
Interrupt control register 2 (address 3F16)
b7 b0
ICON2
0
1 Key-on wake-up interrupt: Enabled
Fig. 2.2.14 Registers setting related to key input interrupt (corresponding to Figure 2.2.13)
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APPLICATION 38K2 Group 2.2 Interrupt
2.2.8 Notes on interrupts (1) Change of relevant register settings When the setting of the following registers or bits is changed, the interrupt request bit may be set to "1". When not requiring the interrupt occurrence synchronized with these setting, take the following sequence. *Interrupt edge selection register (address 0FF316) *Timer X mode register (address 2316) Set the above listed registers or bits as the following sequence.
Set the corresponding interrupt enable bit to "0" (disabled) . Set the interrupt edge select bit (active edge switch bit) or the interrupt (source) select bit to "1". NOP (One or more instructions) Set the corresponding interrupt request bit to "0" (no interrupt request issued). Set the corresponding interrupt enable bit to "1" (enabled).
Fig. 2.2.15 Sequence of changing relevant register s Reason When setting the following, the interrupt request bit may be set to "1". *When setting external interrupt active edge Concerned register: Interrupt edge selection register (address 0FF316) Timer X mode register (address 2316)
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APPLICATION 38K2 Group 2.2 Interrupt
(2) Check of interrupt request bit q When executing the BBC or BBS instruction to an interrupt request bit of an interrupt request register immediately after this bit is set to "0" by using a data transfer instruction, execute one or more instructions before executing the BBC or BBS instruction.
Clear the interrupt request bit to "0" (no interrupt issued) NOP (one or more instructions) Execute the BBC or BBS instruction Data transfer instruction: LDM, LDA, STA, STX, and STY instructions Fig. 2.2.16 Sequence of check of interrupt request bit s Reason If the BBC or BBS instruction is executed immediately after an interrupt request bit of an interrupt request register is cleared to "0", the value of the interrupt request bit before being cleared to "0" is read.
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APPLICATION 38K2 Group 2.3 Timer
2.3 Timer
This paragraph explains the registers setting method and the notes related to the timers. 2.3.1 Memory map
002016 002116 002216 002316 002416 002516 003C16 003D16 003E16 003F16
Prescaler 12 (PRE12) Timer 1 (T1) Timer 2 (T2) Timer X mode register (TM) Prescaler X (PREX) Timer X (TX) Interrupt request register 1 (IREQ1) Interrupt request register 2 (IREQ2) Interrupt control register 1 (ICON1) Interrupt control register 2 (ICON2)
Fig. 2.3.1 Memory map of registers related to timers 2.3.2 Related registers
Prescaler 12, Prescaler X
b7 b6 b5 b4 b3 b2 b1 b0 Prescaler 12 (PRE12) [Address : 2016] Prescaler X (PREX) [Address : 2416]
B
Name
Function
At reset
RW
0 *Set a count value of each prescaler.
*The value set in this register is written to both each prescaler 1 and the corresponding prescaler latch at the same time. *When this register is read out, the count value of the corres2 ponding prescaler is read out.
1 1 1 1 1 1 1 1
3 4 5 6 7
Fig. 2.3.2 Structure of Prescaler 12, Prescaler X
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APPLICATION 38K2 Group 2.3 Timer
Timer 1
b7 b6 b5 b4 b3 b2 b1 b0 Timer 1 (T1) [Address : 2116]
B
Name
Function
At reset
RW
0 *Set a count value of timer 1.
*The value set in this register is written to both timer 1 and timer 1 1 latch at the same time. *When this register is read out, the timer 1's count value is read 2 out.
1 0 0 0 0 0 0 0
3 4 5 6 7
Fig. 2.3.3 Structure of Timer 1
Timer 2, Timer X
b7 b6 b5 b4 b3 b2 b1 b0 Timer 2 (T2) [Address : 2216] Timer X (TX) [Address : 2516]
Name B 0 *Set a count value of each timer.
Function
At reset
RW
1 1 1 1 1 1 1 1
*The value set in this register is written to both each timer and 1 each timer latch at the same time. *When this register is read out, each timer's count value is read 2 out.
3 4 5 6 7
Fig. 2.3.4 Structure of Timer 2, Timer X
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APPLICATION 38K2 Group 2.3 Timer
Timer X mode register
b7 b6 b5 b4 b3 b2 b1 b0 Timer X mode register (TM) [Address : 2316]
B
Name
b1 b0
Function
0 0 1 1 0 : Timer mode 1 : Pulse output mode 0 : Event counter mode 1 : Pulse width measurement mode
At reset
RW
0 Timer X operating mode bits 1 2 CNTR0 active edge selection
bit
0 0 0
The function depends on the operating mode of Timer X. (Refer to Table 2.3.1) 0 : Count start 1 : Count stop
3 Timer X count stop bit 4 5 6 7
0 0 0 0 0
Nothing is arranged for these bits. These are write disabled bits. When these bits are read out, the contents are "0".
Fig. 2.3.5 Structure of Timer X mode register Table 2.3.1 CNTR0 active edge selection bit function Timer X operation modes Timer mode CNTR0 active edge selection bit (bits 2 of address 2316) contents "0" CNTR0 interrupt request occurrence: Falling edge ; No influence to timer count "1" CNTR0 interrupt request occurrence: Rising edge ; No influence to timer count Pulse output mode "0" Pulse output start: Beginning at "H" level CNTR0 interrupt request occurrence: Falling edge "1" Pulse output start: Beginning at "L" level CNTR0 interrupt request occurrence: Rising edge Event counter mode "0" Timer X: Rising edge count CNTR0 interrupt request occurrence: Falling edge "1" Timer X: Falling edge count CNTR0 interrupt request occurrence: Rising edge Pulse width measurement mode "0" Timer X: "H" level width measurement CNTR0 interrupt request occurrence: Falling edge "1" Timer X: "L" level width measurement CNTR0 interrupt request occurrence: Rising edge
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APPLICATION 38K2 Group 2.3 Timer
Interrupt request register 1
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt request register 1 (IREQ1) [Address : 3C16]
B
Name
Function
0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued
At reset
RW

USB bus reset 0 interrupt request bit
0 0 0 0 0 0 0 0
1 USB SOF interrupt request bit 2 USB device interrupt request bit 3 EXB interrupt request bit 4 request bit
INT0 interrupt
interrupt 5 Timer X bit request
6 request bit 7 request bit
Timer 1 interrupt Timer 2 interrupt
"0" can be set by software, but "1" cannot be set.
Fig. 2.3.6 Structure of Interrupt request register 1
Interrupt request register 2
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt request register 2 (IREQ2) [Address : 3D16]
B
Name
Function
0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued
At reset
RW

INT1 interrupt 0 request bit
0 0 0 0 0 0 0 0
1 USB HUB interrupt request bit
receive 2 Serial I/Orequest bit interrupt transmit 3 Serial I/Orequest bit interrupt
4 request bit
CNTR0 interrupt
5 Key-on wake-up bit interrupt request 6 7
A/D conversion interrupt request bit
Nothing is arranged for this bits. This is a write disabled bit. When this bit is read out, the contents are "0".
"0" can be set by software, but "1" cannot be set.
Fig. 2.3.7 Structure of Interrupt request register 2
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APPLICATION 38K2 Group 2.3 Timer
Interrupt control register 1
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt control register 1 (ICON1) [Address : 3E16]
B
Name
Function
0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled
At reset
RW
USB bus reset 0 interrupt enable bit
0 0 0 0 0 0 0 0
1 USB SOF interrupt enable bit 2 USB device interrupt enable bit 3 EXB interrupt enable bit 4 enable bit
INT0 interrupt
interrupt 5 Timer Xbit enable
6 enable bit 7 enable bit
Timer 1 interrupt
Timer 2 interrupt
Fig. 2.3.8 Structure of Interrupt control register 1
Interrupt control register 2
b7 b6 b5 b4 b3 b2 b1 b0
0
Interrupt control register 2 (ICON2) [Address : 3F16]
B
Name
Function
0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled
At reset
RW
INT1 interrupt 0 enable bit
0 0 0 0 0 0 0 0
1 USB HUB interrupt enable bit
receive 2 Serial I/Oenable bit interrupt transmit 3 Serial I/Oenable bit interrupt
4 enable bit
CNTR0 interrupt
5 Key-on wake-upbit interrupt enable 6
A/D conversion interrupt enable bit
7 Fix this bit to "0".
Fig. 2.3.9 Structure of Interrupt control register 2
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APPLICATION 38K2 Group 2.3 Timer
2.3.3 Timer application examples (1) Basic functions and uses [Function 1] Control of Event interval (Timer X, Timer 1, Timer 2) When a certain time, by setting a count value to each timer, has passed, the timer interrupt request occurs. *Generation of an output signal timing *Generation of a wait time [Function 2] Control of Cyclic operation (Timer X, Timer 1, Timer 2) The value of the timer latch is automatically written to the corresponding timer each time the timer underflows, and each timer interrupt request occurs in cycles. *Generation of cyclic interrupts *Clock function (measurement of 10 ms); see Application example 1 *Control of a main routine cycle [Function 3] Output of Rectangular waveform (Timer X) The output level of the CNTR0 pin is inverted each time the timer underflows (in the pulse output mode). *Piezoelectric buzzer output; see Application example 2 *Generation of the remote control carrier waveforms [Function 4] Count of External pulses (Timer X) External pulses input to the CNTR0 pin are counted as the timer count source (in the event counter mode). *Frequency measurement; see Application example 3 *Division of external pulses *Generation of interrupts due to a cycle using external pulses as the count source; count of a reel pulse [Function 5] Measurement of External pulse width (Timer X) The "H" or "L" level width of external pulses input to CNTR0 pin is measured (in the pulse width measurement mode). *Measurement of external pulse frequency (measurement of pulse width of FG pulse for a motor); see Application example 4 *Measurement of external pulse duty (when the frequency is fixed) FG pulse : Pulse used for detecting the motor speed to control the motor speed.
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APPLICATION 38K2 Group 2.3 Timer
(2) Timer application example 1: Clock function (measurement of 10 ms) Outline: The input clock is divided by the timer so that the clock can count up at 10 ms intervals. Specifications: *The clock f(XIN) = 6 MHz is divided by the timer. *The clock is counted up in the process routine of the timer X interrupt which occurs at 10 ms intervals. Figure 2.3.10 shows the timers connection and setting of division ratios; Figure 2.3.11 shows the related registers setting; Figure 2.3.12 shows the control procedure.
Fixed f(XIN) = 6 MHz 1/16
Prescaler X 1/30
Timer X 1/125
Timer X interrupt request bit 0 or 1 10 ms
Dividing by 100 with software
1/100 1 second
0 : No interrupt request issued 1 : Interrupt request issued
Fig. 2.3.10 Timers connection and setting of division ratios
Timer X mode register (address 2316)
b7 b0
TM
1
00 Timer X operating mode: Timer mode Timer X count: Stop Clear to "0" when starting count.
Prescaler X (address 2416)
b7 b0
PREX
29
Timer X (address 2516)
b7 b0
Set "division ratio - 1"
TX
124
Interrupt request register 1 (address 3C16)
b7 b0
IREQ1
0 Timer X interrupt request (becomes "1" at 10 ms intervals)
Interrupt control register 1 (address 3E16)
b7 b0
ICON1
1 Timer X interrupt: Enabled
Fig. 2.3.11 Related registers setting
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APPLICATION 38K2 Group 2.3 Timer
RESET
q x: This bit is not used here. Set it to "0" or "1" arbitrarily.
Initialization *All interrupts disabled SEI TM IREQ1 ICON1 PREX TX TM CLI *Interrupts enabled (address 2316) xxxx1x002 (address 3C16) xx0xxxxx2 (address 3E16), bit5 1 (address 2416) (address 2516) 30 - 1 125 - 1 *Timer X operating mode : Timer mode *Timer X interrupt request bit cleared *Timer X interrupt enabled
*"Division ratio - 1" set to Prescaler X and Timer X
(address 2316), bit3 0
*Timer X count start
Main processing (Note 1) TM PREX TX IREQ1 TM (address 2316), bit3 (address 2416) (address 2516) (address 3C16), bit5 (address 2316), bit3 1 30 - 1 125 - 1 0 0 *Timer X count stop *Timer reset to restart count from 0 second after completion of clock set *Timer X count start Note 1: Perform procedure for completion of clock set only when completing clock set.
Fig. 2.3.12 Control procedure
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.....
Timer X interrupt process routine CLT (Note 2) CLD (Note 3) Push registers to stack Note 2: When using Index X mode flag (T) Note 3: When using Decimal mode flag (D) *Push registers used in interrupt process routine Clock stop ? N Clock count up (1/100 second to year) *Clock counted up Y *Judgment whether clock stops Pop registers *Pop registers pushed to stack RTI
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APPLICATION 38K2 Group 2.3 Timer
(3) Timer application example 2: Piezoelectric buzzer output Outline: The rectangular waveform output function of the timer is applied for a piezoelectric buzzer output. Specifications: *The rectangular waveform, dividing the clock f(XIN) = 6 MHz into about 2 kHz (2038 Hz), is output from the P51/CNTR0 pin. *The level of the P51/CNTR0 pin is fixed to "H" while a piezoelectric buzzer output stops. Figure 2.3.13 shows a peripheral circuit example, and Figure 2.3.14 shows the timers connection and setting of division ratios. Figures 2.3.15 shows the related registers setting, and Figure 2.3.16 shows the control procedure.
The "H" level is output while a piezoelectric buzzer output stops.
CNTR0 output
P51/CNTR0 245 s 245 s
PiPiPi.....
Set a division ratio so that the 38K2 Group underflow output period of the timer X can be 245 s.
Fig. 2.3.13 Peripheral circuit example
Fixed f(XIN) = 6 MHz 1/16
Prescaler X 1
Timer X 1/92
Fixed 1/2 CNTR0
Fig. 2.3.14 Timers connection and setting of division ratios
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APPLICATION 38K2 Group 2.3 Timer
Timer X mode register (address 2316)
b7 b0
TM
1001 Timer X operating mode: Pulse output mode CNTR0 active edge selection: Output starting at "H" level Timer X count: Stop Clear to "0" when starting count.
Timer X (address 2516)
b7 b0
TX
91
Set "division ratio - 1".
Prescaler X (address 2416)
b7 b0
PREX
0
Fig. 2.3.15 Related registers setting
RESET
Initialization P5 P5D ICON1 TM TX PREX
..... ..... .....
q x: This bit is not used here. Set it to "0" or "1" arbitrarily. (address 0A16), bit1 (address 0B16) (address 3E16), bit4 (address 2316) (address 2516) (address 2416) 1
XXXxXX1X2
0
XXXX10012
92 - 1 1-1
*Timer X interrupt disabled *CNTR0 output stop; Piezoelectric buzzer output stop *"Division ratio - 1" set to Timer X and Prescaler X
Main processing
.....
Output unit Yes Piezoelectric buzzer request ? No TM (address 2316), bit3 TX (address 2516) Stop piezoelectric buzzer output 1 92 - 1
*Processing piezoelectric buzzer request, generated during main processing, in output unit
TM (address 2316), bit3
0
Piezoelectric buzzer output start
Fig. 2.3.16 Control procedure
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APPLICATION 38K2 Group 2.3 Timer
(4) Timer application example 3: Frequency measurement Outline: The following two values are compared to judge whether the frequency is within a valid range. *A value by counting pulses input to P51/CNTR0 pin with the timer. *A reference value Specifications: *The pulse is input to the P51/CNTR0 pin and counted by the timer X. *A count value is read out at about 2 ms intervals, the timer 1 interrupt interval. When the count value is 28 to 40, it is judged that the input pulse is valid. *Because the timer is a down-counter, the count value is compared with 227 to 215 (Note). Note: 227 to 215 = {255 (initial value of counter) - 28} to {255 - 40}; 28 to 40 means the number of valid value. Figure 2.3.17 shows the judgment method of valid/invalid of input pulses; Figure 2.3.18 shows the related registers setting; Figure 2.3.19 shows the control procedure.
Input pulse
......
......
......
71.4 s or more (14 kHz or less)
71.4 s (14 kHz)
50 s (20 kHz)
50 s or less (20 kHz or more)
Invalid 2 ms = 28 counts 71.4 s
Valid 2 ms 50 s
Invalid = 40 counts
Fig. 2.3.17 Judgment method of valid/invalid of input pulses
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APPLICATION 38K2 Group 2.3 Timer
Timer X mode register (address 2316)
b7 b0
TM
1
11 0 Timer X operating mode: Event counter mode CNTR0 active edge selection: Falling edge count Timer X count: Stop Clear to "0" when starting count.
Prescaler 12 (address 2016)
b7 b0
PRE12
2
Timer 1 (address 2116)
b7 b0
T1
249
Set "division ratio - 1".
Prescaler X (address 2416)
b7 b0
PREX
0
Timer X (address 2516)
b7 b0
TX
255
Set 255 just before counting pulses. (After a certain time has passed, the number of input pulses is decreased from this value.)
Interrupt control register 1 (address 3E16)
b7 b0
ICON1
10 Timer X interrupt: Disabled Timer 1 interrupt: Enabled
Interrupt request register 1 (address 3C16)
b7 b0
IREQ1
0 Judge Timer X interrupt request bit. ( "1" of this bit when reading the count value indicates the 256 or more pulses input in the condition of Timer X = 255)
Fig. 2.3.18 Related registers setting
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APPLICATION 38K2 Group 2.3 Timer
RESET
Initialization SEI TM PRE12 T1 PREX TX ICON1 TM CLI
..... ..... .....
q x: This bit is not used here. Set it to "0" or "1" arbitrary. *All interrupts disabled *Timer X operating mode : Event counter mode (Count a falling edge of pulses input from CNTR0 pin.) *Division ratio set so that Timer 1 interrupt will occur at 2 ms intervals. *Timer 1 interrupt enabled *Timer X count start *Interrupts enabled
(address 2316) XXXX11102 (address 2016) 3 - 1 (address 2116) 250 - 1 (address 2416) 1-1 (address 2516) 256 - 1 (address 3E16), bit6 1 (address 2316), bit3 0
Timer 1 interrupt process routine
CLT (Note 1) CLD (Note 2) Push registers to stack
Note 1: When using Index X mode flag (T) Note 2: When using Decimal mode flag (D) *Push registers used in interrupt process routine
1 IREQ1(address 3C16), bit5 ? 0 (A) TX (address 2516) *Count value read *Count value into Accumulator (A) stored *Processing as out of range when the count value is 256 or more
In range 214 < (A) < 228 Out of range Fpulse 0 (address 2516) 256 - 1 (address 3C16), bit5 0
*Read value with reference value compared *Comparison result to flag Fpulse stored Fpulse 1
TX IREQ1
*Counter value initialized *Timer X interrupt request bit cleared
Process judgment result Pop registers
*Pop registers pushed to stack
RTI
Fig. 2.3.19 Control procedure
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APPLICATION 38K2 Group 2.3 Timer
(5) Timer application example 4: Measurement of FG pulse width for motor Outline: The timer X counts the "H" level width of the pulses input to the P51/CNTR0 pin. An underflow is detected by the timer X interrupt and an end of the input pulse "H" level is detected by the CNTR0 interrupt. Specifications: *The timer X counts the "H" level width of the FG pulse input to the P51/CNTR0 pin. When the clock frequency is 6 MHz, the count source is 2.67 s, which is obtained by dividing the clock frequency by 16. Measurement can be performed to 175 ms in the range of FFFF16 to 000016. Figure 2.3.20 shows the timers connection and setting of division ratio; Figure 2.3.21 shows the related registers setting; Figure 2.3.22 shows the control procedure.
Fixed f(XIN) = 6 MHz 1/16
Prescaler X 1/256
Timer X 1/256
Timer X interrupt request bit 0 or 1 175 ms
0 : No interrupt request issued 1 : Interrupt request issued
Fig. 2.3.20 Timers connection and setting of division ratios
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APPLICATION 38K2 Group 2.3 Timer
Timer X mode register (address 2316)
b7 b0
TM
1011 Timer X operating mode: Pulse width measurement mode CNTR0 active edge selection: "H" level width measurement Timer X count: Stop Clear to "0" when starting count.
Prescaler X (address 2416)
b7 b0
PREX
255
Timer X (address 2516)
b7 b0
Set "division ratio - 1".
TX
255
Interrupt control register 1 (address 3E16)
b7 b0
ICON1
1 Timer X interrupt: Enabled
Interrupt request register 1 (address 3C16)
b7 b0
IREQ1
0 Timer X interrupt request (Set to "1" automatically when Timer X underflows)
Interrupt control register 2 (address 3F16)
b7 b0
ICON2
1 CNTR0 interrupt: Enabled
Interrupt request register 2 (address 3D16)
b7 b0
IREQ2
0 CNTR0 interrupt request (Set to "1" automatically when "H" level input came to the end)
Fig. 2.3.21 Related registers setting
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APPLICATION 38K2 Group 2.3 Timer
RESET q x: This bit is not used here. Set it to "0" or "1" arbitrarily. Initialization SEI TM PREX TX IREQ1 ICON1 IREQ2 ICON2 TM CLI
*All interrupts disabled (address 2316) XXXX10112 (address 2416) 256 - 1 (address 2516) 256 - 1 (address 3C16), bit5 0 (address 3E16), bit5 1 (address 3D16), bit4 0 (address 3F16), bit4 1 (address 2316), bit3 0 *Timer X operating mode : Pulse width measurement mode (Measure "H" level of pulses input from CNTR0 pin.) *Set division ratio so that Timer X interrupt will occur at 175 ms intervals. *Timer X interrupt request bit cleared *Timer X interrupt enabled *CNTR0 interrupt request bit cleared *CNTR0 interrupt enabled *Timer X count start *Interrupts enabled
(A) PREX Low-order 8-bit result of Inverted (A) pulse width measurement (A) TX High-order 8-bit result of Inverted (A) pulse width measurement PREX (address 2416) 256 - 1 TX (address 2516) 256 - 1
Fig. 2.3.22 Control procedure
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..... ..... .....
Timer X interrupt process routine Process errors RTI CNTR0 interrupt process routine CLT (Note 1) CLD (Note 2) Push registers to stack Pop registers RTI
*Error occurs
Note 1: When using Index X mode flag (T) Note 2: When using Decimal mode flag (D) *Push registers used in interrupt process routine
*Read the count value and store it to RAM
*Division ratio set so that Timer X interrupt will occur at 175 ms intervals.
*Pop registers pushed to stack
page 38 of 112
APPLICATION 38K2 Group 2.3 Timer
2.3.4 Notes on timer q If a value n (between 0 and 255) is written to a timer latch, the frequency division ratio is 1/(n+1). q When switching the count source by the timer X count source selection bit, the value of timer count is altered in unconsiderable amount owing to generating of a thin pulses in the count input signals. Therefore, select the timer count source before set the value to the prescaler and the timer.
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APPLICATION 38K2 Group 2.4 Serial I/O
2.4 Serial I/O
This paragraph explains the registers setting method and the notes related to the Serial I/O. 2.4.1 Memory map
~ ~
002616 002716 Transmit/Receive buffer register (TB/RB) Serial I/O status register (SIOSTS)
~ ~ ~ ~
Interrupt request register 2 (IREQ2)
~ ~
003D16
~ ~
003F16 Interrupt control register 2 (ICON2)
~ ~ ~ ~
Serial I/O control register (SIOCON) UART control register (UARTCON) Baud rate generator (BRG)
~ ~
0FE016 0FE116 0FE216
~ ~
0FF316 Interrupt edge selection register (INTEDGE)
~ ~ ~ ~
~ ~
Fig. 2.4.1 Memory map of registers related to Serial I/O
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APPLICATION 38K2 Group 2.4 Serial I/O
2.4.2 Related registers
Transmit/Receive buffer register
b7 b6 b5 b4 b3 b2 b1 b0
Transmit/Receive buffer register (TB/RB) [Address : 2616] B Name Function
At reset
RW
0 The transmission data is written to or the receive data is read out
from this buffer register. 1 * At writing: A data is written to the transmit buffer register. * At reading: The contents of the receive buffer register are read 2 out.
? ? ? ? ? ? ? ?
3 4 5 6 7
Note: The contents of transmit buffer register cannot be read out. The data cannot be written to the receive buffer register.
Fig. 2.4.2 Structure of Transmit/Receive buffer register
Serial I/O status register
b7 b6 b5 b4 b3 b2 b1 b0 Serial I/O status register (SIOSTS) [Address : 2716]
B Name 0 Transmit buffer empty flag
(TBE)
Function
0 : Buffer full 1 : Buffer empty 0 : Buffer empty 1 : Buffer full 0 : Transmit shift in progress 1 : Transmit shift completed 0 : No error 1 : Overrun error 0 : No error 1 : Parity error 0 : No error 1 : Framing error 0 : (OE) U (PE) U (FE) = 0 1 : (OE) U (PE) U (FE) = 1
At reset
RW

0 0 0 0 0 0 0 1
1 Receive buffer full flag (RBF) 2 Transmit shift register shift
completion flag (TSC)
3 Overrun error flag (OE) 4 Parity error flag (PE) 5 Framing error flag (FE) 6 Summing error flag (SE)
7 Nothing is allocated for this bit. This is a write disabled bit.
When this bit is read out, the contents are "1".
Fig. 2.4.3 Structure of Serial I/O status register
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APPLICATION 38K2 Group 2.4 Serial I/O
Serial I/O control register
b7 b6 b5 b4 b3 b2 b1 b0 Serial I/O control register (SIOCON) [Address : 0FE016]
B
Name 0 BRG count source
Function
0 : System clock 1 : System clock/4 * In clock synchronous serial I/O 0 : BRG output divided by 4 1 : External clock input * In UART 0 : BRG output divided by 16 1 : External clock input divided by 16 0 : P43 pin operates as ordinary I/O pin 1 : P43 pin operates as SRDY output pin 0 : Interrupt when transmit buffer has emptied 1 : Interrupt when transmit shift operation is completed 0 : Transmit disabled 1 : Transmit enabled 0 : Receive disabled 1 : Receive enabled 0 : Clock asynchronous(UART) serial I/O 1 : Clock synchronous serial I/O 0 : Serial I/O disabled (pins P40 to P43 operate as ordinary I/O pins) 1 : Serial I/O enabled (pins P40 to P43 operate as serial I/O pins)
At reset
RW
selection bit (CSS)
0 0
1 Serial I/O synchronous
clock selection bit (SCS)
2 SRDY output enable bit
(SRDY)
0 0 0 0 0 0
3 Transmit interrupt
source selection bit (TIC)
4 Transmit enable bit (TE) 5 Receive enable bit (RE) 6 Serial I/O mode selection bit
(SIOM)
7 Serial I/O enable bit
(SIOE)
Fig. 2.4.4 Structure of Serial I/O control register
UART control register
b7 b6 b5 b4 b3 b2 b1 b0 UART control register (UARTCON) [Address : 0FE116]
Name B 0 Character length selection bit
(CHAS) 1 Parity enable bit (PARE) 2 Parity selection bit (PARS) 3 Stop bit length selection bit (STPS)
Function
0 : 8 bits 1 : 7 bits 0 : Parity checking disabled 1 : Parity checking enabled 0 : Even parity 1 : Odd parity 0 : 1 stop bit 1 : 2 stop bits
At reset
RW
0 0 0 0 0 1 1 1

4 Nothing is allocated for this bit. This is a write disabled bit.
When this bit is read out, the contents are "0".
5 Nothing is allocated for these bits. These are write disabled bits.
When these bits are read out, the contents are "1".
6 7
Fig. 2.4.5 Structure of UART control register
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APPLICATION 38K2 Group 2.4 Serial I/O
Baud rate generator
b7 b6 b5 b4 b3 b2 b1 b0 Baud rate generator (BRG) [Address : 0FE216]
Function B Set a count value of baud rate generator. 0 1 2 3 4 5 6 7
At reset
RW
? ? ? ? ? ? ? ?
Fig. 2.4.6 Structure of Baud rate generator
Interrupt edge selection register
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt edge selection register (INTEDGE) [Address : 0FF316]
B
0 1 2 3 4 5 6 7
Name
INT0 interrupt edge selection bit
Function
0 : Falling edge active 1 : Rising edge active
At reset
RW
0 0 0 0 0 0 0 0
Nothing is arranged for this bits. This is a write disabled bit. When this bit is read out, the contents are "0".
INT1 interrupt edge selection bit
0 : Falling edge active 1 : Rising edge active
Nothing is arranged for this bits. This is a write disabled bit. When this bit is read out, the contents are "0".
Fig. 2.4.7 Structure of Interrupt edge selection register
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APPLICATION 38K2 Group 2.4 Serial I/O
Interrupt request register 2
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt request register 2 (IREQ2) [Address : 3D16]
B
Name
Function
0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued
At reset
RW

INT1 interrupt 0 request bit
0 0 0 0 0 0 0 0
1 request bit
USB HUB interrupt
receive 2 Serial I/Orequest bit interrupt transmit 3 Serial I/Orequest bit interrupt
4 request bit
CNTR0 interrupt
5 Key-on wake-up bit interrupt request 6 7
A/D conversion interrupt request bit
Nothing is arranged for this bits. This is a write disabled bit. When this bit is read out, the contents are "0".
"0" can be set by software, but "1" cannot be set.
Fig. 2.4.8 Structure of Interrupt request register 2
Interrupt control register 2
b7 b6 b5 b4 b3 b2 b1 b0
0
Interrupt control register 2 (ICON2) [Address : 3F16]
B
Name
INT1 interrupt
Function
0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled
At reset
RW
0 enable bit 1 enable bit
0 0 0 0 0 0 0 0
USB HUB interrupt
receive 2 Serial I/Oenable bit interrupt transmit 3 Serial I/Oenable bit interrupt
4 enable bit
CNTR0 interrupt
5 Key-on wake-upbit interrupt enable 6
A/D conversion interrupt enable bit
7 Fix this bit to "0".
Fig. 2.4.9 Structure of Interrupt control register 2
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APPLICATION 38K2 Group 2.4 Serial I/O
2.4.3 Serial I/O connection examples (1) Control of peripheral IC equipped with CS pin Figure 2.4.10 shows connection examples of a peripheral IC equipped with the CS pin. There are connection examples using a clock synchronous serial I/O mode.
(1) Only transmission (Using the RXD pin as an I/O port) Port SCLK TXD 38K2 group CS CLK DATA Peripheral IC (OSD controller etc.)
(2) Transmission and reception
Port SCLK TXD RXD 38K2 group
CS CLK IN OUT Peripheral IC 2 (E PROM etc.)
(3) Transmission and reception (When connecting RXD with TXD (When connecting IN with OUT in peripheral IC) Port SCLK TXD RXD CS CLK IN
(4) Connection of plural IC
Port SCLK TXD RXD Port 38K2 group
CS CLK IN OUT Peripheral IC 1
OUT 38K2 group 1 Peripheral IC 2 2 (E PROM etc.)
CS CLK Select an N-channel open-drain output for TXD pin output control. 2: Use the OUT pin of peripheral IC which is an N-channel opendrain output and becomes high impedance during receiving data.
1:
IN OUT Peripheral IC 2
Notes: "Port" means an output port controlled by software.
Fig. 2.4.10 Serial I/O connection examples (1)
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APPLICATION 38K2 Group 2.4 Serial I/O
(2) Connection with microcomputer Figure 2.4.11 shows connection examples with another microcomputer.
(1) Selecting internal clock
(2) Selecting external clock
SCLK TXD RXD 38K2 group
CLK IN OUT Microcomputer
SCLK TXD RXD 38K2 group
CLK IN OUT Microcomputer
(3) Using SRDY signal output function (Selecting an external clock)
(4) In UART
SRDY
SCLK TXD RXD 38K2 group
RDY CLK IN OUT Microcomputer
TXD RXD
RXD TXD
38K2 group
Microcomputer
Fig. 2.4.11 Serial I/O connection examples (2)
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APPLICATION 38K2 Group 2.4 Serial I/O
2.4.4 Setting of serial I/O transfer data format A clock synchronous or clock asynchronous (UART) can be selected as a data format of Serial I/O. Figure 2.4.12 shows the serial I/O transfer data format.
1ST-8DATA-1SP
ST LSB MSB SP
1ST-7DATA-1SP
ST LSB MSB SP
1ST-8DATA-1PAR-1SP
ST LSB MSB PAR SP
1ST-7DATA-1PAR-1SP
ST LSB MSB PAR SP
UART
1ST-8DATA-2SP
ST LSB MSB 2SP
1ST-7DATA-2SP
ST LSB MSB 2SP
Serial I/O
1ST-8DATA-1PAR-2SP
ST LSB MSB PAR 2SP
1ST-7DATA-1PAR-2SP
ST LSB MSB PAR 2SP
Clock synchronous Serial I/O
LSB first
ST : Start bit SP : Stop bit PAR : Parity bit
Fig. 2.4.12 Serial I/O transfer data format
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APPLICATION 38K2 Group 2.4 Serial I/O
2.4.5 Serial I/O application examples (1) Communication using clock synchronous serial I/O (transmit/receive) Outline : 2-byte data is transmitted and received, using the clock synchronous serial I/O. ________ The SRDY signal is used for communication control. Figure 2.4.13 shows a connection diagram, and Figure 2.4.14 shows a timing chart. Figure 2.4.15 shows a registers setting related to the transmitting side, and Figure 2.4.16 shows registers setting related to the receiving side.
Transmitting side
Receiving side
P52/INT1
SRDY
SCLK TXD 38K2 group
SCLK RXD 38K2 group
Fig. 2.4.13 Connection diagram Specifications : * * * * The Serial I/O is used (clock synchronous serial I/O is selected.) Synchronous clock frequency : 125 kHz (f(XIN) = 6 MHz is divided by 48) The SRDY (receivable signal) is used. The receiving side outputs the SRDY signal at intervals of 2 ms (generated by timer), and 2-byte data is transferred from the transmitting side to the receiving side.
SRDY
****
SCLK TXD
****
D0 D1 D2 D3 D4 D5 D6 D7
D0 D1 D2 D3 D4 D5 D6 D7
D0 D1
****
2 ms
Fig. 2.4.14 Timing chart
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APPLICATION 38K2 Group 2.4 Serial I/O
Transmitting side
Serial I/O status register (Address : 2716)
b7 b0
SIOSTS
Transmit buffer empty flag * Confirm that the data has been transferred from Transmit buffer register to Transmit shift register. * When this flag is "1", it is possible to write the next transmission data in to Transmit buffer register. Transmit shift register shift completion flag Confirm completion of transmitting 1-byte data with this flag. "1" : Transmit shift completed
Serial I/O control register (Address : 0FE016)
b7 b0
SIOCON
1101
00
BRG counter source selection bit : f(XIN) Serial I/O synchronous clock selection bit : BRG/4 Transmit enable bit : Transmit enabled Receive enable bit : Receive disabled Serial I/O mode selection bit : Clock synchronous serial I/O Serial I/O enable bit : Serial I/O enabled
Baud rate generator (Address : 0FE216)
b7 b0
BRG
11
Set "division ratio - 1".
Interrupt edge selection register (Address : 0FF316)
b7 b0
INTEDGE
0
INT1 interrupt edge selection bit : Falling edge active
Fig. 2.4.15 Registers setting related to transmitting side
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APPLICATION 38K2 Group 2.4 Serial I/O
Receiving side
Serial I/O status register (Address : 2716)
b7 b0
SIOSTS
Receive buffer full flag Confirm completion of receiving 1-byte data with this flag. "1" : At completing reception "0" : At reading out contents of Receive buffer register Overrun error flag "1" : When data is ready in Receive shift register while Receive buffer register contains the data. Parity error flag "1" : When a parity error occurs in enabled parity. Framing error flag "1" : When stop bits cannot be detected at the specified timing. Summing error flag "1" : when any one of the following errors occurs. * Overrun error * Parity error * Framing error
Serial I/O control register (Address : 0FE016)
b7 b0
SIOCON 1 1 1 1
11
Serial I/O synchronous clock selection bit : External clock
SRDY output enable bit : SRDY output enabled
Transmit enable bit : Transmit enabled Set this bit to "1", using SRDY output. Receive enable bit : Receive enabled Serial I/O mode selection bit : Clock synchronous serial I/O Serial I/O enable bit : Serial I/O enabled
Fig. 2.4.16 Registers setting related to receiving side
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APPLICATION 38K2 Group 2.4 Serial I/O
Figure 2.4.17 shows a control procedure of the transmitting side, and Figure 2.4.18 shows a control procedure of the receiving side.
RESET
q x: This bit is not used here. Set it to "0" or "1" arbitrarily.
Initialization SIOCON (Address : 0FE016) 1101xx002 BRG (Address : 0FE216) 12 - 1 INTEDGE (Address : 0FF316), bit2 0
.....
IREQ2 (Address:3D16), bit0? 1 IREQ2 (Address : 3D16), bit0 0
0
* Detection of INT1 falling edge
TB/RB (Address : 2616)
The first byte of a transmission data
* Transmission data write Transmit buffer empty flag is set to "0" by this writing.
SIOSTS (Address : 2716), bit0? 1 TB/RB (Address : 2616)
0
* Judgment of transferring from Transmit buffer register to Transmit shift register (Transmit buffer empty flag) * Transmission data write Transmit buffer empty flag is set to "0" by this writing.
The second byte of a transmission data
SIOSTS (Address : 2716), bit0? 1
0
* Judgment of transferring from Transmit buffer register to Transmit shift register (Transmit buffer empty flag)
SIOSTS (Address : 2716), bit2? 1
0
* Judgment of shift completion of Transmit shift register (Transmit shift register shift completion flag)
Fig. 2.4.17 Control procedure of transmitting side
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APPLICATION 38K2 Group 2.4 Serial I/O
RESET
q x: This bit is not used here. Set it to "0" or "1" arbitrarily.
Initialization SIOCON (Address : 0FE016)
.....
1111x11x2
N Pass 2 ms? Y TB/RB (Address : 2616) Dummy data * SRDY output SRDY signal is output by writing data to the TB/RB. Using the SRDY, set Transmit enable bit (bit4) of the SIOCON to "1." 0 * Judgment of completion of receiving (Receive buffer full flag) * An interval of 2 ms generated by Timer
SIOSTS (Address : 2716), bit1? 1 Read out reception data from TB/RB (Address : 2616)
* Reception of the first byte data Receive buffer full flag is set to "0" by reading data.
0 SIOSTS (Address : 2716), bit1? 1 Read out reception data from TB/RB (Address : 2616) * Reception of the second byte data. Receive buffer full flag is set to "0" by reading data. * Judgment of completion of receiving (Receive buffer full flag)
Fig. 2.4.18 Control procedure of receiving side
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APPLICATION 38K2 Group 2.4 Serial I/O
(2) Output of serial data (control of peripheral IC) Outline : 4-byte data is transmitted and received, using the clock synchronous serial I/O. The CS signal is output to a peripheral IC through port P53. The example for using Serial I/O is shown. Figure 2.4.19 shows a connection diagram, and Figure 2.4.20 shows a timing chart.
P53 SCLK TXD
CS CLK DATA
CS CLK DATA
38K2 group
Peripheral IC
Example for using Serial I/O
Fig. 2.4.19 Connection diagram Specifications : * The Serial I/O is used (clock synchronous serial I/O is selected.) * Synchronous clock frequency : 125 kHz (f(XIN) = 6 MHz is divided by 48) * Transfer direction : LSB first * The Serial I/O interrupt is not used. * Port P53 is connected to the CS pin ("L" active) of the peripheral IC for transmission control; the output level of port P53 is controlled by software.
CS
CLK
DATA
DO0
DO1
DO2
DO3
Fig. 2.4.20 Timing chart
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APPLICATION 38K2 Group 2.4 Serial I/O
Figure 2.4.21 shows registers setting related to Serial I/O, and Figure 2.4.22 shows a setting of serial I/O transmission data.
Serial I/O control register (Address : 0FE016)
b7 b0
SIOCON
11011000
BRG count source selection bit : f(XIN) Serial I/O synchronous clock selection bit : BRG/4 SRDY output enable bit : SRDY output disabled Transmit interrupt source selection bit : Transmit shift operating completion Transmit enable bit : Transmit enabled Receive enable bit : Receive disabled Serial I/O mode selection bit : Clock synchronous serial I/O Serial I/O enable bit : Serial I/O enabled
Baud rate generator (Address : 0FE216)
b7 b0
BRG
11
Set "division ratio - 1".
Interrupt control register 2 (Address : 3F16)
b7 b0
ICON2
0
Serial I/O transmit interrupt enable bit : Interrupt disabled
Interrupt request register 2 (Address : 3D16)
b7 b0
IREQ2
0
Serial I/O transmit interrupt request bit Confirm completion of transmitting 1-byte data by one unit. "1" : Transmit shift completion
Fig. 2.4.21 Registers setting related to Serial I/O
Transmit/Receive buffer register (Address : 2616)
b7 b0
TB/RB
Set a transmission data. Confirm that transmission of the previous data is completed (bit 3 of the Interrupt request register 2 is "1") before writing data.
Fig. 2.4.22 Setting of serial I/O transmission data
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APPLICATION 38K2 Group 2.4 Serial I/O
When the registers are set as shown in Fig. 2.4.21, the Serial I/O can transmit 1-byte data by writing data to the transmit buffer register. Thus, after setting the CS signal to "L", write the transmission data to the transmit buffer register by each 1 byte, and return the CS signal to "H" when the target number of bytes has been transmitted. Figure 2.4.23 shows a control procedure of Serial I/O.
RESET
q x: This bit is not used here. Set it to "0" or "1" arbitrarily.
Initialization SIOCON (Address : 0FE016) 110110002 UARTCON (Address : 0FE116), bit4 0 BRG (Address : 0FE216) 12-1 ICON2 (Address : 3F16), bit3 0 P5 (Address : 0A16), bit3 1 P5D (Address : 0B16) xxxx1xxx2
.... ....
*Serial I/O set *Serial I/O transmit interrupt : Disabled *CS signal output port set ("H" level output)
P5 (Address : 0A16), bit3
0
*CS signal output level to "L" set
IREQ2 (Address : 3D16), bit3 0
*Serial I/O transmit interrupt request bit set to "0"
TB/RB (Address : 2616)
a transmission data
*Transmission
data write (Start of transmit 1-byte data)
IREQ2 (Address : 3D16), bit3? 1
0
*Judgment of completion of transmitting 1-byte data
N
Complete to transmit data? Y 1
*Use any of RAM area as a counter for counting the number of transmitted bytes *Judgment of completion of transmitting the target number of bytes
P5 (Address : 0A16), bit3
*Return the CS signal output level to "H" when transmission of the target number of bytes is completed
Fig. 2.4.23 Control procedure of Serial I/O
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APPLICATION 38K2 Group 2.4 Serial I/O
(3) Cyclic transmission or reception of block data (data of specified number of bytes) between two microcomputers Outline : When the clock synchronous serial I/O is used for communication, synchronization of the clock and the data between the transmitting and receiving sides may be lost because of noise included in the synchronous clock. It is necessary to correct that constantly, using "heading adjustment". This "heading adjustment" is carried out by using the interval between blocks in this example. Figure 2.4.24 shows a connection diagram.
SCLK RXD TXD Master unit
SCLK TXD RXD Slave
Fig. 2.4.24 Connection diagram Specifications : * * * * * * * *
The serial I/O is used (clock synchronous serial I/O is selected). Synchronous clock frequency : 125 kHz (f(XIN) = 6 MHz is divided by 48) Byte cycle: 488 s Number of bytes for transmission or reception : 8 byte/block Block transfer cycle : 16 ms Block transfer term : 3.5 ms Interval between blocks : 12.5 ms Heading adjustment time : 8 ms
Limitations of specifications : * Reading of the reception data and setting of the next transmission data must be completed within the time obtained from "byte cycle - time for transferring 1-byte data" (in this example, the time taken from generating of the serial I/O receive interrupt request to input of the next synchronous clock is 431 s). * "Heading adjustment time < interval between blocks" must be satisfied.
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APPLICATION 38K2 Group 2.4 Serial I/O
The communication is performed according to the timing shown in Figure 2.4.25. In the slave unit, when a synchronous clock is not input within a certain time (heading adjustment time), the next clock input is processed as the beginning (heading) of a block. When a clock is input again after one block (8 byte) is received, the clock is ignored. Figure 2.4.26 shows related registers setting.
D0
D1
D2
D7
D0
Byte cycle Block transfer term Block transfer cycle Heading adjustment time Interval between blocks
Processing for heading adjustment
Fig. 2.4.25 Timing chart
Master unit
Serial I/O control register (Address : 0FE016) b7 b0 SIOCON
Slave unit
Serial I/O control register (Address : 0FE016) b7 b0 SIOCON BRG count source : f(XIN) Synchronous clock : BRG/4 SRDY output disabled Transmit interrupt source : Transmit shift operating completion Transmit enabled Receive enabled Clock synchronous serial I/O Serial I/O enabled
11111000
1111
01
Not affected by external clock Synchronous clock : External clock
SRDY output disabled
Not use the serial I/O transmit interrupt Transmit enabled Receive enabled Clock synchronous serial I/O Serial I/O enabled
Both of units
Baud rate generator (Address : 0FE216) b7 b0 BRG
11
Set "division ratio - 1".
Fig. 2.4.26 Related registers setting
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APPLICATION 38K2 Group 2.4 Serial I/O
Control procedure : q Control in the master unit After setting the related registers shown in Figure 2.4.26, the master unit starts transmission or reception of 1-byte data by writing transmission data to the transmit buffer register. To perform the communication in the timing shown in Figure 2.4.25, take the timing into account and write transmission data. Additionally, read out the reception data when the serial I/O transmit interrupt request bit is set to "1," or before the next transmission data is written to the transmit buffer register. Figure 2.4.27 shows a control procedure of the master unit using timer interrupts.
Interrupt processing routine executed every 488 s
CLT (Note 1) CLD (Note 2) Push register to stack
Note 1: When using the Index X mode flag (T). Note 2: When using the Decimal mode flag (D). *Push the register used in the interrupt processing routine into the stack N *Generation of a certain block interval by using a timer or other functions Count a block interval counter *Check the block interval counter and determine to start a block transfer
Within a block transfer term? Y Read a reception data
Complete to transfer a block? N Write a transmission data
Y
Start a block transfer? Y Write the first transmission data (first byte) in a block
N
Pop registers
*Pop registers which is pushed to stack
RTI
Fig. 2.4.27 Control procedure of master unit
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APPLICATION 38K2 Group 2.4 Serial I/O
q Control in the slave unit After setting the related registers as shown in Figure 2.4.26, the slave unit becomes the state where a synchronous clock can be received at any time, and the serial I/O receive interrupt request bit is set to "1" each time an 8-bit synchronous clock is received. In the serial I/O receive interrupt processing routine, the data to be transmitted next is written to the transmit buffer register after the received data is read out. However, if no serial I/O receive interrupt occurs for a certain time (heading adjustment time or more), the following processing will be performed. 1. The first 1-byte data of the transmission data in the block is written into the transmit buffer register. 2. The data to be received next is processed as the first 1 byte of the received data in the block. Figure 2.4.28 shows a control procedure of the slave unit using the serial I/O receive interrupt and any timer interrupt (for heading adjustment).
Serial I/O receive interrupt processing routine
Timer interrupt processing routine
CLT (Note 1) CLD (Note 2) Push register to stack
Within a block transfer term? Y Read a reception data
N
CLT (Note 1) *Push the register used in the CLD (Note 2) interrupt processing routine into Push register to stack the stack *Confirmation of the received byte counter to judge the Heading adjustment counter - 1 block transfer term
*Push the register used in the interrupt processing routine into the stack
Heading adjustment counter = 0? Y
N
A received byte counter +1
Write the first transmission data (first byte) in a block
A received byte counter 8? N
Y
A received byte counter
0
Pop registers Write a transmission data Write dummy data (FF16) RTI Heading adjustment counter Initial value (Note 3)
*Pop registers which is pushed to stack
Pop registers
*Pop registers which is pushed to stack Notes 1: When using the Index X mode flag (T). 2: When using the Decimal mode flag (D). 3: In this example, set the value which is equal to the heading adjustment time divided by the timer interrupt cycle as the initial value of the heading adjustment counter. For example: When the heading adjustment time is 8 ms and the timer interrupt cycle is 1 ms, set 8 as the initial value.
RTI
Fig. 2.4.28 Control procedure of slave unit
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APPLICATION 38K2 Group 2.4 Serial I/O
(4) Communication (transmit/receive) using asynchronous serial I/O (UART) Outline : 2-byte data is transmitted and received, using the asynchronous serial I/O. Port P24 is used for communication control. Figure 2.4.29 shows a connection diagram, and Figure 2.4.30 shows a timing chart.
Transmitting side
P24
Receiving side
P24
TXD
RXD
38K2 group
38K2 group
Fig. 2.4.29 Connection diagram (Communication using UART)
Specifications : * The Serial I/O is used (UART is selected). * Transfer bit rate : 9600 bps (f(XIN) = 6 MHz is divided by 624) * Communication control using port P24 (The output level of port P24 is controlled by software.) * 2-byte data is transferred from the transmitting side to the receiving side at intervals of 10 ms generated by the timer.
~ ~
ST D0 D1 D2 D3 D4 D5 D6 D7 SP(2) ST D0 D1 D2 D3 D4 D5 D6 D7 SP(2)
P24
......
TXD
~ ~
ST D0
......
10 ms
Fig. 2.4.30 Timing chart (using UART)
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APPLICATION 38K2 Group 2.4 Serial I/O
Table 2.4.1 shows setting examples of the baud rate generator (BRG) values and transfer bit rate values; Figure 2.4.31 shows registers setting related to the transmitting side; Figure 2.4.32 shows registers setting related to the receiving side. Table 2.4.1 Setting examples of Baud rate generator values and transfer bit rate values Transfer bit rate (bps) (Note 3) 600 1200 2400 4800 9600 14400 19200 38400 57600 BRG count source (Note 1) f(XIN)/4 f(XIN)/4 f(XIN) f(XIN) f(XIN) f(XIN) f(XIN) f(XIN) f(XIN) At f(XIN) = 6 MHZ BRG setting value (Note 155 77 155 77 38 25 19 9 -
2)
At f(XIN) = 8 MHZ BRG setting value (Note 207 103 207 103 51 34 25 12 8
2)
Notes 1: Select the BRG count source with bit 0 of the serial I/O control register (Address : 0FE016). 2: These are setting values with small errors. 3: Equation of transfer bit rate: Transfer bit rate (bps) = f(XIN) (BRG setting value + 1) 16 m
m: When bit 0 of the serial I/O control register (Address : 0FE016) is set to "0", a value of m is 1. When bit 0 of the serial I/O control register (Address : 0FE016) is set to "1", a value of m is 4.
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APPLICATION 38K2 Group 2.4 Serial I/O
Transmitting side
Serial I/O status register (Address : 2716)
b7 b0
SIOSTS
Transmit buffer empty flag * Confirm that the data has been transferred from Transmit buffer register to Transmit shift register. * When this flag is "1", it is possible to write the next transmission data in to Transmit buffer register. Transmit shift register shift completion flag Confirm completion of transmitting 1-byte data with this flag. "1" : Transmit shift completed
Serial I/O control register (Address : 0FE016)
b7 b0
SIOCON 1 0 0 1
000
BRG count source selection bit : f(XIN) Serial I/O synchronous clock selection bit : BRG/16
SRDY output enable bit :SRDY out disabled
Transmit enable bit : Transmit enabled Receive enable bit : Receive disabled Serial I/O mode selection bit : Asynchronous serial I/O(UART) Serial I/O enable bit : Serial I/O enabled
UART control register (Address : 0FE116)
b7 b0
UARTCON
1
00
Character length selection bit : 8 bits Parity enable bit : Parity checking disabled Stop bit length selection bit : 2 stop bits
Baud rate generator (Address : 0FE216)
b7 b0
BRG
38
Set
f(XIN) Transfer bit rate 16 m
-1
When bit 0 of the Serial I/O control register (Address : 0FE016) is set to "0," a value of m is 1. When bit 0 of the Serial I/O control register (Address : 0FE016) is set to "1," a value of m is 4.
Fig. 2.4.31 Registers setting related to transmitting side
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APPLICATION 38K2 Group 2.4 Serial I/O
Receiving side
Serial I/O status register (Address : 2716)
b7 b0
SIOSTS
Receive buffer full flag Confirm completion of receiving 1-byte data with this flag. "1" : At completing reception "0" : At reading out contents of Receive buffer register Overrun error flag "1" : When data is ready in Receive shift register while Receive buffer register contains the data. Parity error flag "1" : When a parity error occurs in enabled parity. Framing error flag "1" : When stop bits cannot be detected at the specified timing. Summing error flag "1" : When any one of the following errors occurs. * Overrun error * Parity error * Framing error
Serial I/O control register (Address : 0FE016)
b7 b0
SIOCON
1010
000
BRG count source selection bit : f(XIN) Serial I/O synchronous clock selection bit : BRG/16 SRDY output enable bit : SRDY out disabled Transmit enable bit : Transmit disabled Receive enable bit : Receive enabled Serial I/O mode selection bit : Asynchronous serial I/O(UART) Serial I/O enable bit : Serial I/O enabled
UART control register (Address : 0FE116)
b7 b0
UARTCON
1
00
Character length selection bit : 8 bits Parity enable bit : Parity checking disabled Stop bit length selection bit : 2 stop bits
Baud rate generator (Address : 0FE216)
b7 b0
BRG
38
-1 Transfer bit rate 16 m When bit 0 of the Serial I/O control register (Address : 0FE016) is set to "0," a value of m is 1. When bit 0 of the Serial I/O control register (Address : 0FE016) is set to "1," a value of m is 4. Set
f(XIN)
Fig. 2.4.32 Registers setting related to receiving side
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APPLICATION 38K2 Group 2.4 Serial I/O
Figure 2.4.33 shows a control procedure of the transmitting side, and Figure 2.4.34 shows a control procedure of the receiving side.
RESET Initialization SIOCON (Address : 0FE016)1001x0002 UARTCON (Address : 0FE116) 000010002 BRG (Address : 0FE216) 39-1 P2 (Address : 0416), bit4 0 P2D (Address : 0516) xxx1xxxx2
.....
q x: This bit is not used here. Set it to "0" or "1" arbitrarily.
* Port P24 set for communication control
Pass 10 ms? Y P2 (Address : 0416), bit4 1
N
* An interval of 10 ms generated by Timer
* Communication start * Transmission data write Transmit buffer empty flag is set to "0" by this writing. * Judgment of transferring data from Transmit buffer register to Transmit shift register (Transmit buffer empty flag)
TB/RB (Address : 2616)
The first byte of a transmission data
SIOSTS (Address : 2716), bit0? 1
The second byte of a transmission data
0
TB/RB (Address : 2616)
* Transmission data write Transmit buffer empty flag is set to "0" by this writing. * Judgment of transferring data from Transmit buffer register to Transmit shift register (Transmit buffer empty flag)
SIOSTS (Address : 2716), bit0? 1
0
SIOSTS (Address : 2716), bit2?
1
0
* Judgment of shift completion of Transmit shift register (Transmit shift register shift completion flag)
P2 (Address : 0416), bit4 0
* Communication completion
Fig. 2.4.33 Control procedure of transmitting side
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APPLICATION 38K2 Group 2.4 Serial I/O
RESET
q x: This bit is not used here. Set it to "0" or "1" arbitrarily.
Initialization SIOCON (Address : 0FE016) 1010x0002 UARTCON (Address : 0FE116) 000010002 BRG (Address : 0FE216) 39-1 P2D (Address : 0516) xxx0xxxx2
.....
SIOSTS (Address : 2716), bit1?
1
0
* Judgment of completion of receiving (Receive buffer full flag) * Reception of the first byte data Receive buffer full flag is set to "0" by reading data.
Read out a reception data from RB (Address : 2616)
SIOSTS (Address : 2716), bit6? 0
1
* Judgment of an error flag
SIOSTS (Address : 2716), bit1?
1
0
* Judgment of completion of receiving (Receive buffer full flag) * Reception of the second byte data Receive buffer full flag is set to "0" by reading data.
Read out a reception data from RB (Address : 2616)
SIOSTS (Address : 2716), bit6? 0
1
* Judgment of an error flag Processing for error
1
P2 (Address : 0416), bit4?
0
Fig. 2.4.34 Control procedure of receiving side
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APPLICATION 38K2 Group 2.4 Serial I/O
2.4.6 Notes on serial I/O (1) Notes when selecting clock synchronous serial I/O (Serial I/O) Stop of transmission operation Clear the serial I/O enable bit and the transmit enable bit to "0" (Serial I/O and transmit disabled). q Reason Since transmission is not stopped and the transmission circuit is not initialized even if only the serial I/O enable bit is cleared to "0" (Serial I/O disabled), the internal transmission is running (in this case, since pins TxD, RxD, SCLK, and SRDY function as I/O ports, the transmission data is not output). When data is written to the transmit buffer register in this state, data starts to be shifted to the transmit shift register. When the serial I/O enable bit is set to "1" at this time, the data during internally shifting is output to the TxD pin and an operation failure occurs. Stop of receive operation Clear the receive enable bit to "0" (receive disabled), or clear the serial I/O enable bit to "0" (Serial I/O disabled). Stop of transmit/receive operation Clear the transmit enable bit and receive enable bit to "0" simultaneously (transmit and receive disabled). (when data is transmitted and received in the clock synchronous serial I/O mode, any one of data transmission and reception cannot be stopped.) q Reason In the clock synchronous serial I/O mode, the same clock is used for transmission and reception. If any one of transmission and reception is disabled, a bit error occurs because transmission and reception cannot be synchronized. In this mode, the clock circuit of the transmission circuit also operates for data reception. Accordingly, the transmission circuit does not stop by clearing only the transmit enable bit to "0" (transmit disabled). Also, the transmission circuit is not initialized by clearing the serial I/O enable bit to "0" (Serial I/O disabled) (refer to (1) ).
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APPLICATION 38K2 Group 2.4 Serial I/O
(2) Notes when selecting clock asynchronous serial I/O (Serial I/O) Stop of transmission operation Clear the transmit enable bit to "0" (transmit disabled). q Reason Since transmission is not stopped and the transmission circuit is not initialized even if only the serial I/O enable bit is cleared to "0" (Serial I/O disabled), the internal transmission is running (in this case, since pins TxD, RxD, SCLK, and SRDY function as I/O ports, the transmission data is not output). When data is written to the transmit buffer register in this state, data starts to be shifted to the transmit shift register. When the serial I/O enable bit is set to "1" at this time, the data during internally shifting is output to the TxD pin and an operation failure occurs. Stop of receive operation Clear the receive enable bit to "0" (receive disabled). Stop of transmit/receive operation Only transmission operation is stopped. Clear the transmit enable bit to "0" (transmit disabled). q Reason Since transmission is not stopped and the transmission circuit is not initialized even if only the serial I/O enable bit is cleared to "0" (Serial I/O disabled), the internal transmission is running (in this case, since pins TxD, RxD, SCLK, and SRDY function as I/O ports, the transmission data is not output). When data is written to the transmit buffer register in this state, data starts to be shifted to the transmit shift register. When the serial I/O enable bit is set to "1" at this time, the data during internally shifting is output to the TxD pin and an operation failure occurs. Only receive operation is stopped. Clear the receive enable bit to "0" (receive disabled). (3) SRDY output of reception side (Serial I/O) When signals are output from the SRDY pin on the reception side by using an external clock in the clock synchronous serial I/O mode, set all of the receive enable bit, the SRDY output enable bit, and the transmit enable bit to "1" (transmit enabled). (4) Setting serial I/O control register again (Serial I/O) Set the serial I/O control register again after the transmission and the reception circuits are reset by clearing both the transmit enable bit and the receive enable bit to "0."
Clear both the transmit enable bit (TE) and the receive enable bit (RE) to "0" Set the bits 0 to 3 and bit 6 of the serial I/O control register Set both the transmit enable bit (TE) and the receive enable bit (RE), or one of them to "1"
Can be set with the LDM instruction at the same time
Fig. 2.4.35 Sequence of setting serial I/O control register again
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APPLICATION 38K2 Group 2.4 Serial I/O
(5) Data transmission control with referring to transmit shift register completion flag (Serial I/O) The transmit shift register completion flag changes from "1" to "0" with a delay of 0.5 to 1.5 shift clocks. When data transmission is controlled with referring to the flag after writing the data to the transmit buffer register, note the delay. (6) Transmission control when external clock is selected (Serial I/O) When an external clock is used as the synchronous clock for data transmission, set the transmit enable bit to "1" at "H" of the SCLK input level. Also, write the transmit data to the transmit buffer register (serial I/O shift register) at "H" of the SCLK input level. (7) Transmit interrupt request when transmit enable bit is set (Serial I/O) When the transmit interrupt is used, set the transmit interrupt enable bit to transmit enabled as shown in the following sequence. Set the interrupt enable bit to "0" (disabled) with CLB instruction. Prepare serial I/O for transmission/reception. Set the interrupt request bit to "0" with CLB instruction after 1 or more instruction has been executed. Set the interrupt enable bit to "1" (enabled). q Reason When the transmission enable bit is set to "1", the transmit buffer empty flag and transmit shift register completion flag are set to "1". The interrupt request is generated and the transmission interrupt bit is set regardless of which of the two timings listed below is selected as the timing for the transmission interrupt to be generated. * Transmit buffer empty flag is set to "1" * Transmit shift register completion flag is set to "1"
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APPLICATION 38K2 Group 2.5 USB function
2.5 USB function
Some application notes are available on the Web site: "Renesas Technology Corp." Homepage USB Device (http://www.renesas.com/en/usb) Please refer to them for explanation and application of USB function.
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APPLICATION 38K2 Group 2.6 HUB function
2.6 HUB function
Some application notes are available on the Web site: "Renesas Technology Corp." Homepage USB Device (http://www.renesas.com/en/usb) Please refer to them for explanation and application of HUB function.
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APPLICATION 38K2 Group 2.7 External bus interface(EXB)
2.7 External bus interface(EXB)
Some application notes are available on the Web site: "Renesas Technology Corp." Homepage USB Device (http://www.renesas.com/en/usb) Please refer to them for explanation and application of external bus interface.
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APPLICATION 38K2 Group 2.8 A/D converter
2.8 A/D converter
This paragraph explains the registers setting method and the notes related to the A/D converter. 2.8.1 Memory map
003616 003716 003816
AD control register (ADCON) AD conversion register 1 (AD1) AD conversion register 2 (AD2)
003D16 Interrupt request register 2 (IREQ2)
003F16 Interrupt control register 2 (ICON2)
Fig. 2.8.1 Memory map of registers related to A/D converter 2.8.2 Related registers
AD control register
b7 b6 b5 b4 b3 b2 b1 b0 AD control register (ADCON) [Address : 3616 ]
B 0 1 2 3
Name
Analog input pin selection bits
b2 b1 b0
Function
0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 : P10/DQ0/AN0 1 : P11/DQ1/AN1 0 : P12/DQ2/AN2 1 : P13/DQ3/AN3 0 : P14/DQ4/AN4 1 : P15/DQ5/AN5 0 : P16/DQ6/AN6 1 : P17/DQ7/AN7
At reset
RW
0
AD conversion completion bit 0 : Conversion in progress 1 : Conversion completed When these bits are read out, the contents are indefinite.
1 ? ? ? ?
4 Nothing is arranged for these bits. These are write disabled bits. 5 6 7
Fig. 2.8.2 Structure of AD control register
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APPLICATION 38K2 Group 2.8 A/D converter
AD conversion register 1
b7 b6 b5 b4 b3 b2 b1 b0 AD conversion register 1 (AD1) [Address : 3716]
B
stored.
Function
At reset
RW

0 The read-only register in which the AD conversion's results are 1 2 3 4
b7
? ?
b7
< 8-bit read>
b0
? ? ?
b9 b8 b7 b6 b5 b4 b3 b2
< 10-bit read>
b0
5 6 7
b7 b6 b5 b4 b3 b2 b1 b0
? ? ?
Fig. 2.8.3 Structure of AD conversion register 1
AD conversion register 2
b7 b6 b5 b4 b3 b2 b1 b0
0
AD conversion register 2 (AD2) [Address : 38
16]
B
stored.
Name
Function
At reset
RW
0 The read-only register in which the AD conversion's results are
< 10-bit read>
? ?
1
b7
0
b0 b9 b8
2 Nothing is allocated for these bits. These are write disabled bits. 3 4 5 6 7 Fix this bit to "0".
When these bits are read out, the contents are "0".
0 0 0 0 0 0

Fig. 2.8.4 Structure of AD conversion register 2
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APPLICATION 38K2 Group 2.8 A/D converter
Interrupt request register 2
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt request register 2 (IREQ2) [Address : 3D16]
B
Name
INT1 interrupt
Function
0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued
At reset
RW

0 request bit 1 request bit
0 0 0 0 0 0 0 0
USB HUB interrupt
receive 2 Serial I/Orequest bit interrupt transmit 3 Serial I/Orequest bit interrupt
4 request bit
CNTR0 interrupt
5 Key-on wake-up bit interrupt request 6 7
A/D conversion interrupt request bit
Nothing is arranged for this bits. This is a write disabled bit. When this bit is read out, the contents are "0".
"0" can be set by software, but "1" cannot be set.
Fig. 2.8.5 Structure of Interrupt request register 2
Interrupt control register 2
b7 b6 b5 b4 b3 b2 b1 b0
0
Interrupt control register 2 (ICON2) [Address : 3F16]
B
Name
Function
0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled
At reset
RW
INT1 interrupt 0 enable bit
0 0 0 0 0 0 0 0
1 USB HUB interrupt enable bit
receive 2 Serial I/Oenable bit interrupt transmit 3 Serial I/Oenable bit interrupt
4 enable bit
CNTR0 interrupt
5 Key-on wake-upbit interrupt enable 6
A/D conversion interrupt enable bit
7 Fix this bit to "0". Fig. 2.8.6 Structure of Interrupt control register 2
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APPLICATION 38K2 Group 2.8 A/D converter
2.8.3 A/D converter application examples (1) Conversion of analog input voltage Outline : The analog input voltage input from a sensor is converted to digital values. Figure 2.8.7 shows a connection diagram, and Figure 2.8.8 shows the related registers setting.
P10/DQ0/AN0
Sensor
38K2 Group
Fig. 2.8.7 Connection diagram Specifications : *The analog input voltage input from a sensor is converted to digital values. *P10/DQ0/AN0 pin is used as an analog input pin.
AD control register (address 3616)
b7 b0
ADCON
0000
Analog input pin : P10/DQ0/AN0 selected A/D conversion start
AD conversion register 2 (address 3816)
b7 b0
AD2
0
(Read-only)
AD conversion register 1 (address 3716)
b7 b0
AD1
(Read-only)
A result of A/D conversion is stored (Note). Note: After bit 3 of ADCON is set to "1", read out that contents. When reading 10-bit data, read address 003816 before address 003716; when reading 8-bit data, read address 003716 only. When reading 10-bit data, bits 2 to 6 of address 003816 are "0".
Fig. 2.8.8 Related registers setting
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APPLICATION 38K2 Group 2.8 A/D converter
An analog input signal from a sensor is converted to the digital value according to the related registers setting shown by Figure 2.8.8. Figure 2.8.9 shows the control procedure for 8-bit read, and Figure 2.8.10 shows the control procedure for 10-bit read.
q X: This bit is not used here. Set it to "0" or "1" arbitrarily.
ADCON (address 3616) XXXX00002
*P10/DQ0/AN0 pin selected as analog input pin *A/D conversion start
ADCON (address 3616), bit3 ?
0
*Judgment of A/D conversion completion
1 Read out AD1 (address 3716) *Read out of conversion result
Fig. 2.8.9 Control procedure for 8-bit read
q X: This bit is not used here. Set it to "0" or "1" arbitrarily.
ADCON (address 3616) XXXX00002
*P10/DQ0/AN0 pin selected as analog input pin *A/D conversion start
ADCON (address 3616), bit3 ?
0
*Judgment of A/D conversion completion
1 Read out AD2 (address 3816) *Read out of high-order digit (b9, b8) of conversion result
Read out AD1 (address 3716)
*Read out of low-order digit (b7 - b0) of conversion result
Fig. 2.8.10 Control procedure for 10-bit read
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APPLICATION 38K2 Group 2.8 A/D converter
2.8.4 Notes on A/D converter (1) Analog input pin Make the signal source impedance for analog input low, or equip an analog input pin with an external capacitor of 0.01 F to 1 F. Further, be sure to verify the operation of application products on the user side. q Reason An analog input pin includes the capacitor for analog voltage comparison. Accordingly, when signals from signal source with high impedance are input to an analog input pin, charge and discharge noise generates. This may cause the A/D conversion precision to be worse. (2) Clock frequency during A/D conversion The comparator consists of a capacity coupling, and a charge of the capacity will be lost if the clock frequency is too low. Thus, make sure the following during an A/D conversion. * f(XIN) is 500 kHz or more * Do not execute the STP instruction
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APPLICATION 38K2 Group 2.9 Watchdog timer
2.9 Watchdog timer
This paragraph explains the registers setting method and the notes related to the watchdog timer. 2.9.1 Memory map
003916 003B16
Watchdog timer control register (WDTCON) CPU mode register (CPUM)
Fig. 2.9.1 Memory map of registers related to watchdog timer 2.9.2 Related registers
Watchdog timer control register
b7 b6 b5 b4 b3 b2 b1 b0 Watchdog timer control register (WDTCON) [Address : 3916]
Function B Name 0 Watchdog timer H (for read-out of high-order 6 bits) 1 2 3 4 5 6 STP instruction disable bit 7 Watchdog timer H count
source selection bit 0 : STP instruction enabled 1 : STP instruction disabled 0 : Watchdog timer L underflow 1 : System clock/16
At reset
RW

1 1 1 1 1 1 0 0
Fig. 2.9.2 Structure of Watchdog timer control register
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APPLICATION 38K2 Group 2.9 Watchdog timer
CPU mode register
b7 b6 b5 b4 b3 b2 b1 b0 01 CPU mode register (CPUM: address 3B16)
B
0 1 2 3 4 5 6
Name
Processor mode bits
b1 b0
Function
0 0 : Single-chip mode 0 1 : Not available 1 0 : Not available 1 1 : Not available 0 : 0 page 1 : 1 page
At reset R W
0
*
0 1 0
Stack page selection bit Fix this bit to "1". Fix this bit to "0". System clock selection bit System clock division ratio selection bits
0 : Main clock f(XIN) 1 : fSYN
b7 b6
0 0
7
0 0 : = f(system clock)/8 (8-divide mode) 0 1 : = f(system clock)/4 (4-divide mode) 1 0 : = f(system clock)/2 (2-divide mode) 1 1 : = f(system clock) (Through mode)
*: The initial value of bit 1 depends on the CNVss level.
Fig. 2.9.3 Structure of CPU mode register
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APPLICATION 38K2 Group 2.9 Watchdog timer
2.9.3 Watchdog timer application examples (1) Detection of program runaway Outline: If program runaway occurs, let the microcomputer reset, using the internal timer for detection of program runaway. Specifications: *An underflow of watchdog timer H is judged to be program runaway, and the microcomputer is returned to the reset status. *Before the watchdog timer H underflows, "0" is set into bit 7 of the watchdog timer control register at every cycle in a main routine. *Through mode is used as a system clock division ratio. *An underflow signal of the watchdog timer L is supplied as the count source of watchdog timer H. Figure 2.9.4 shows a watchdog timer connection and division ratio setting; Figure 2.9.5 shows the related registers setting; Figure 2.9.6 shows the control procedure.
Fixed f(XIN) = 6 MHz 1/16
Watchdog timer L Watchdog timer H 1/256 1/256 Reset circuit Internal reset
RESET STP instruction disable bit STP instruction
Fig. 2.9.4 Watchdog timer connection and division ratio setting
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APPLICATION 38K2 Group 2.9 Watchdog timer
CPU mode register (address 3B16)
b7 b0
CPUM
11001
00 Processor mode: Single-chip mode System clock: Main clock System clock division ratio: f(system clock) (Through mode)
Watchdog timer control register (address 3916)
b7 b0
WDTCON
00
1 Watchdog timer H (for read-out of high-order 6 bits) Enable STP instruction Watchdog timer H count source: Watchdog timer L underflow
Fig. 2.9.5 Related registers setting
RESET
Initialization SEI CLT CLD CPUM (address 3B16) 11001X002 : : CLI
*All interrupts disabled *Processor mode: Single-chip mode *Main clock f(XIN): Operating *Through mode selected as main clock division ratio *Interrupts enabled
WDTCON (address 3916), bit7,bit6
002
*Watchdog timer L underflow selected as Watchdog timer H count source *STP instruction enabled
Main processing : :
Fig. 2.9.6 Control procedure 2.9.4 Notes on watchdog timer qMake sure that the watchdog timer does not underflow while waiting Stop release, because the watchdog timer keeps counting during that term. qWhen the STP instruction disable bit has been set to "1", it is impossible to switch it to "0" by a program.
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APPLICATION 38K2 Group 2.10 Reset
2.10 Reset
2.10.1 Connection example of reset IC
1
VCC
Power source
General-purpose reset IC
5 Output 4 Delay capacity
RESET
GND 3
0.1 F VSS
38K2 Group
Fig. 2.10.1 Example of poweron reset circuit Figure 2.10.2 shows the system example which switches to the RAM backup mode by detecting a drop of the system power source voltage with the INT interrupt.
System power source voltage +5 V
+
7 VCC1 RESET 2 5
VCC
RESET
VCC2
3 INT 6 INT VSS
1
V1 GND Cd 4
38K2 Group
M62009L, M62009P, M62009FP
Fig. 2.10.2 RAM backup system
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APPLICATION 38K2 Group 2.10 Reset
____________
2.10.2 Notes on RESET pin Connecting capacitor In case where the RESET signal rise time is long, connect a ceramic capacitor or others across the RESET pin and the VSS pin. Use a 1000 pF or more capacitor for high frequency use. When connecting the capacitor, note the following : * Make the length of the wiring which is connected to a capacitor as short as possible. * Be sure to verify the operation of application products on the user side. q Reason If the several nanosecond or several ten nanosecond impulse noise enters the RESET pin, it may cause a microcomputer failure.
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APPLICATION 38K2 Group 2.11 Frequency synthesizer (PLL)
2.11 Frequency synthesizer (PLL)
This paragraph explains the registers setting method and the notes related to the frequency synthesizer (PLL circuit). 2.11.1 Memory map
001016 003B16 0FF816
USB control register (USBCON) CPU mode register (CPUM)
PLL control register (PLLCON)
Fig. 2.11.1 Memory map of registers related to PLL 2.11.2 Related registers
USB control register
b7 b6 b5 b4 b3 b2 b1 b0
USB control register (USBCON) [Address 1016]
B 0 1 2 3 4 5 6 7
Name
Remote wakeup bit
Function
0 : Returning to BUS idle state by writing "1" first and then "0". (Remote wakeup signal) 1 : K-state output 0 : "L" output mode (valid in TRONE = "1") 1 : "H" output mode (valid in TRONE = "1") 0 : TrON port output disabled (Hi-Z state) 1 : TrON port output enabled 0 : Normal mode (valid in VREFE = "1") 1 : Low current mode (valid in VREFE = "1") 0 : USB reference voltage circuit operation disabled 1 : USB reference voltage circuit operation enabled 0 : Upstream-port difference input circuit operation disabled 1 : Upstream--port difference input circuit operation enabled 0 : External oscillating clock f(XIN) 1 : PLL circuit output clock fVCO 0 : USB module reset 1 : USB module operation enabled
At reset
RW
0 0 0 0 0 0 0 0
TrON output control bit TrON output enable bit USB reference voltage control bit USB reference voltage enable bit USB difference input enable bit USB clock select bit USB module operation enable bit
Fig. 2.11.2 Structure of USB control register
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APPLICATION 38K2 Group 2.11 Frequency synthesizer (PLL)
CPU mode register
b7 b6 b5 b4 b3 b2 b1 b0 01 CPU mode register (CPUM: address 3B16)
B
0 1 2 3 4 5 6
Name
Processor mode bits
b1 b0
Function
0 0 : Single-chip mode 0 1 : Not available 1 0 : Not available 1 1 : Not available 0 : 0 page 1 : 1 page
At reset R W
0
*
0 1 0
Stack page selection bit Fix this bit to "1". Fix this bit to "0". System clock selection bit System clock division ratio selection bits
0 : Main clock f(XIN) 1 : fSYN
b7 b6
0 0
7
0 0 : = f(system clock)/8 (8-divide mode) 0 1 : = f(system clock)/4 (4-divide mode) 1 0 : = f(system clock)/2 (2-divide mode) 1 1 : = f(system clock) (Through mode)
*: The initial value of bit 1 depends on the CNVss level.
Fig. 2.11.3 Structure of CPU mode register
PLL control register
b7 b6 b5 b4 b3 b2 b1 b0
PLL control register (PLLCON) [Address : 0FF816] Name B Function 0 Nothing is arranged for these bit. These are write disabled bits. 1 When these bits are read out, the contents are "0". 2 3 USB clock division b4 b3 ratio selection bits 0 0 : Divided by 8 (fSYN = fUSB/8) 0 1 : Divided by 6 (fSYN = fUSB/6) 4 1 0 : Divided by 4 (fSYN = fUSB/4) 1 1 : Not selected 5 6 7 PLL operation mode b6 b5 0 0 : Not multiplied (fVCO = fXIN) selection bits 0 1 : Double (fVCO = fXIN 2) 1 0 : Quadruple (fVCO = fXIN 4) 1 1 : Multiplied by 8 (fVCO = fXIN 8) PLL enable bit 0 : Disabled 1 : Enabled
At reset
RW
0 0
0
0
Fig. 2.11.4 Structure of PLL control register
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APPLICATION 38K2 Group 2.11 Frequency synthesizer (PLL)
2.11.3 Functional description The frequency synthesizer generates the 48 MHz clock which is multiples of the external input reference f(XIN) and is needed for operating USB function. When using the USB function, set PLL enable bit of PLL control register (PLLCON: address 0FF816) to "1" (enabled) to send the 48 MHz PLL output clock (fVCO) into USB function control unit. Figure 2.11.5 shows the block diagram for the frequency synthesizer circuit.
fUSB f(XIN) PLL fVCO Division circuit fSYN
PLLCON (address 0FF816)
USBCON (address 001016)
Fig. 2.11.5 Block diagram for frequency synthesizer circuit
q fVCO (PLL output clock) fVCO is generated by multiplying PLL input clock according to the contents of PLL operation mode selection bits (bits 6, 5 of PLLCON), where fVCO =f(XIN) n, n:value selected by PLL operation mode selection bits Set PLL operation mode selection bits so that fVCO may be set to 48 MHz. While the PLL enable bit is "0" (disabled), fVCO retains "L" level (except when PLL operation mode selection bits are set to "002"). Table 2.11.1 shows the example of PLL operation mode selection bits setting.
Table 2.11.1 PLL operation mode selection bits setting example f(XIN) PLL operation mode selection bits * 11 10 fVCO 48 MHZ 48 MHZ
6 MHZ 12 MHZ *: PLL control register (bits 6,5)
Furthermore, when PLL operation mode selection bits are set to "002", the clock input into PLL is used as fVCO, which is not multiplied, regardless of PLL operation enabled or disabled.
q fUSB (USB clock) Either f(XIN) (main clock) or fVCO (PLL output clock) can be selected for fUSB by USB clock select bit of USB control register (bit6 of USBCON: address 001016), and it is supplied to the USB function control circuit. When supplying fVCO to the USB function control circuit, after setting PLL enable bit to "1" (enabled) and then set USB clock select bit to "1" (USB clock).
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APPLICATION 38K2 Group 2.11 Frequency synthesizer (PLL)
q fSYN (fUSB division clock) According to the setting of the USB clock division ratio selection bits (bits 4, 3 of PLLCON), the division clock of fUSB is supplied to fSYN. fSYN =fUSB / m, m:value selected by USB clock division ratio selection bits Set the USB clock division ratio selection bits so that fSYN may be set to 6 MHz, 8 MHz or 12 MHz. When using fSYN as internal system clock, set the system clock selection bit of CPU mode register (bit 5 of CPUM: address 003B16) to "1" (fSYN). Table 2.11.2 shows the example of USB clock division ratio selection bits setting. Table 2.11.2 USB clock division ratio selection bits setting example fUSB 48 MHZ USB clock division ratio selection bits * 00 01 10 fSYN 6 MHZ 8 MHZ 12 MHZ
*: PLL control register (bit4,3) q Setting for starting up PLL circuit when hardware reset Figure 2.11.6 shows the example of related registers setting.
q X: This bit is not used here. Set it to "0" or "1" arbitrarily.
CPUM (address: 3B16) 11001X002
*Select main clock f(XIN) as a system clock
USBCON (address: 1016) X0XXXXXX2
*Select main clock f(XIN) as a USB clock *PLL operation mode (bit6,5): Multiplied by 8 *USB division mode (bit4,3): Divided by 6 *Enable PLL operation (bit7)
PLLCON (address: 0FF816) 111010002
Wait (approximately 1 ms)
*Wait for oscillation stabilization When multiplying oscillation by PLL, wait for oscillation stabilization. *Select PLL circuit output clock fVCO as a USB clock
USBCON (address: 1016) X1XXXXXX2
CPUM (address: 3B16) 11101X002
*Select fSYN as a system clock
Note: The above setting example assumes the operation when the external oscillating clock is 6 MHZ and the internal system clock is fSYN.
Fig. 2.11.6 Related registers setting when hardware reset
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APPLICATION 38K2 Group 2.11 Frequency synthesizer (PLL)
q Procedure for stop and return of PLL circuit when stop mode Figure 2.11.7 shows the stop procedure of PLL circuit, and figure 2.11.8 shows the return procedure of PLL circuit.
PLL circuit operation enabled (Supply PLL circuit output clock fVCO as USB clock) q X: This bit is not used here. Set it to "0" or "1" arbitrarily.
CPUM (address: 3B16) 11001X002
*Select main clock f(XIN) as a system clock *Select PLL circuit output clock fVCO as a USB clock and does not change this setting *Disable PLL operation (bit7) (fVCO is fixed to "L".) *Stop mode
USBCON (address: 1016) X1XXXXXX2
PLLCON (address: 0FF816) 0XXXX0002
STP instruction (stop mode)
Note: The above setting example assumes the operation when the external oscillating clock is 6 MHZ and the internal system clock is fSYN.
Fig. 2.11.7 Related registers setting when stop mode
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APPLICATION 38K2 Group 2.11 Frequency synthesizer (PLL)
After recovery from stop mode q X: This bit is not used here. Set it to "0" or "1" arbitrarily.
PLLCON (address: 0FF816) bit6,5 002
*PLL operation mode (bit6,5): Not multiplied (Change PLL circuit output clock fVCO to f(XIN))
USBCON (address: 1016) X0XXXXXX2
*Select main clock f(XIN) as a USB clock *PLL operation mode (bit6,5): Multiplied by 8 *USB division mode (bit4,3): Divided by 6 *Enable PLL operation (bit7) *Wait for oscillation stabilization When multiplying oscillation by PLL, wait for oscillation stabilization. *Select PLL circuit output clock fVCO as a USB clock
PLLCON (address: 0FF816) 111010002
Wait (approximately 1 ms)
USBCON (address: 1016) X1XXXXXX2
CPUM (address: 3B16) 11101X002
*Select fSYN (8MHZ) as a system clock
Same setting procedure when hardware reset Note: The above setting example assumes the operation when the external oscillating clock is 6 MHZ and the internal system clock is fSYN.
Fig. 2.11.8 Related registers setting when recovery from stop mode
2.11.4 Notes on PLL q6 MHZ or 12 MHZ external oscillator can be connected as an input reference clock (f(XIN)). When using the frequency synthesized clock function, we recommend using the fastest frequency possible of f(XIN) as an input clock reference for the PLL. qWhen enabling PLL operation from PLL disabled status (disabled when reset), set the USB clock select bit of USBCON to "0" (f(XIN)) to operate with the main clock (f(XIN)). qWhen supplying fVCO to the USB block after setting PLL operation enable bit to "1" (PLL enabled), wait for the oscillation stable time (1 ms or less) of PLL to avoid any instability caused by the clock, then set USB clock select bit to "1" (USB clock). qWhen selecting fSYN as an internal system clock, fUSB must be 48 MHz. qWhen selecting fSYN as an internal system clock, change the system clock selection bit to main clock (f(XIN)) before executing STP instruction. It is because the following are needed for the low-power consumption: *fUSB must be stopped by disabling PLL operation in Stop mode. *The taimer 1 for waiting oscillation stabilization when returning from Stop mode will require the input count source.
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APPLICATION 38K2 Group 2.12 Clock generating circuit
2.12 Clock generating circuit
This paragraph explains the registers setting method and the notes related to the clock generating circuit. 2.12.1 Memory map
001016 003B16 0FF816
USB control register (USBCON) CPU mode register (CPUM)
PLL control register (PLLCON)
Fig. 2.12.1 Memory map of registers related to clock generating circuit
2.12.2 Related registers
USB control register
b7 b6 b5 b4 b3 b2 b1 b0
USB control register (USBCON) [Address 1016]
B 0 1 2 3 4 5 6 7
Name
Remote wakeup bit
Function
0 : Returning to BUS idle state by writing "1" first and then "0". (Remote wakeup signal) 1 : K-state output 0 : "L" output mode (valid in TRONE = "1") 1 : "H" output mode (valid in TRONE = "1") 0 : TrON port output disabled (Hi-Z state) 1 : TrON port output enabled 0 : Normal mode (valid in VREFE = "1") 1 : Low current mode (valid in VREFE = "1") 0 : USB reference voltage circuit operation disabled 1 : USB reference voltage circuit operation enabled 0 : Upstream-port difference input circuit operation disabled 1 : Upstream--port difference input circuit operation enabled 0 : External oscillating clock f(XIN) 1 : PLL circuit output clock fVCO 0 : USB module reset 1 : USB module operation enabled
At reset
RW
0 0 0 0 0 0 0 0
TrON output control bit TrON output enable bit USB reference voltage control bit USB reference voltage enable bit USB difference input enable bit USB clock select bit USB module operation enable bit
Fig. 2.12.2 Structure of USB control register
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APPLICATION 38K2 Group 2.12 Clock generating circuit
CPU mode register
b7 b6 b5 b4 b3 b2 b1 b0 01 CPU mode register (CPUM: address 3B16)
B
0 1 2 3 4 5 6
Name
Processor mode bits
b1 b0
Function
0 0 : Single-chip mode 0 1 : Not available 1 0 : Not available 1 1 : Not available 0 : 0 page 1 : 1 page
At reset R W
0
*
0 1 0
Stack page selection bit Fix this bit to "1". Fix this bit to "0". System clock selection bit System clock division ratio selection bits
0 : Main clock f(XIN) 1 : fSYN
b7 b6
0 0
7
0 0 : = f(system clock)/8 (8-divide mode) 0 1 : = f(system clock)/4 (4-divide mode) 1 0 : = f(system clock)/2 (2-divide mode) 1 1 : = f(system clock) (Through mode)
*: The initial value of bit 1 depends on the CNVss level.
Fig. 2.12.3 Structure of CPU mode register
PLL control register
b7 b6 b5 b4 b3 b2 b1 b0
PLL control register (PLLCON) [Address : 0FF816] Name B Function 0 Nothing is arranged for these bit. These are write disabled bits. 1 When these bits are read out, the contents are "0". 2 3 USB clock division b4 b3 ratio selection bits 0 0 : Divided by 8 (fSYN = fUSB/8) 0 1 : Divided by 6 (fSYN = fUSB/6) 4 1 0 : Divided by 4 (fSYN = fUSB/4) 1 1 : Not selected 5 6 7 PLL operation mode b6 b5 0 0 : Not multiplied (fVCO = fXIN) selection bits 0 1 : Double (fVCO = fXIN 2) 1 0 : Quadruple (fVCO = fXIN 4) 1 1 : Multiplied by 8 (fVCO = fXIN 8) PLL enable bit 0 : Disabled 1 : Enabled
At reset
RW
0 0
0
0
Fig. 2.12.4 Structure of PLL control register
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APPLICATION 38K2 Group 2.12 Clock generating circuit
2.12.3 Oscillation control Either can be selected as an internal system clock between the following two by system clock selection bit. q Main clock f(XIN) q fSYN (fUSB division clock) Any one can be selected as an internal clock among the following four by system clock division ratio selection bits. q f(XIN) or fSYN/8 (8-divide mode) q f(XIN) or fSYN/4 (4-divide mode) q f(XIN) or fSYN/2 (2-divide mode) q f(XIN) or fSYN (Through mode) (1) Generation of internal clock f() using main clock f(XIN) Table 2.12.1 shows the example of internal clock f() generation using main clock f(XIN); Figure 2.12.5 shows the related registers setting. Table 2.12.1 Example of internal clock f() generation using main clock f(XIN) System clock division ratio selection bits * 00 01 6 MHZ 10 11 00 01 8 MHZ 10 11 00 01 12 MHZ 10 *: CPU mode register (bits 7,6) System clock f() 0.75 1.5 3 6 1 2 4 8 1.5 3 6 MHZ MHZ MHZ MHZ MHZ MHZ MHZ MHZ MHZ MHZ MHZ Power source voltage VCC [V] 3.00 to 5.25
4.00 to 5.25
q Select main clock f(XIN) as system clock and set clock division mode
b7 001 b0 00 CPU mode register (CPUM: address 3B16) 0 : Main clock f(XIN)
b7 b6
0 0 : = f(system clock)/8 (8-divide mode) 0 1 : = f(system clock)/4 (4-divide mode) 1 0 : = f(system clock)/2 (2-divide mode) 1 1 : = f(system clock) (Through mode)
Fig. 2.12.5 Related registers setting
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APPLICATION 38K2 Group 2.12 Clock generating circuit
(2) Generation of internal clock f() using fSYN (fUSB division clock) Table 2.12.2 shows the example of internal clock f() generation using fSYN; Figure 2.12.6 shows the related registers setting. Table 2.12.2 Example of internal clock f() generation using fSYN fUSB USB clock division ratio selection bits * 1 00 fSYN System clock division ratio selection bits * 2 00 01 10 11 00 01 10 11 00 01 10 f() 0.75 1.5 3 6 1 2 4 8 1.5 3 6 MHZ MHZ MHZ MHZ MHZ MHZ MHZ MHZ MHZ MHZ MHZ Power source voltage VCC [V] 3.00 to 5.25
6 MHZ
48 MHZ
01
8 MHZ
4.00 to 5.25
11 *1: PLL control register (bits 4,3) *2: CPU mode register (bits 7,6)
12 MHZ
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APPLICATION 38K2 Group 2.12 Clock generating circuit
1. Select main clock f(XIN) as system clock and set clock division mode.
b7 001 b0 00 CPU mode register (CPUM: address 3B16) 0 : Main clock f(XIN)
b7 b6
0 0 : = f(system clock)/8 (8-divide mode) 0 1 : = f(system clock)/4 (4-divide mode) 1 0 : = f(system clock)/2 (2-divide mode) 1 1 : = f(system clock) (Through mode)
2. Select main clock f(XIN) as USB clock.
b7 0 b0 USB control register (USBCON: address 1016) 0 : Main clock f(XIN)
3. Enable PLL circuit, and generating PLL output clock (fVCO) 48 MHZ and fSYN.
b7 1 b0 000 PLL control register (PLLCON: address 0FF816)
b4 b3
0 0 : Divided by 8 (fSYN = fUSB/8) 0 1 : Divided by 6 (fSYN = fUSB/6) 1 0 : Divided by 4 (fSYN = fUSB/4) 1 1 : Not selected
b6 b5
0 0 : Not multiplied (fVCO = fXIN) 0 1 : Double (fVCO = fXIN 2) 1 0 : Quadruple (fVCO = fXIN 4) 1 1 : Multiplied by 8 (fVCO = fXIN 8) 1 : PLL enabled
4. Select PLL output clock (fVCO) as USB clock.
b7 1 b0 USB control register (USBCON: address 1016) 1 : fVCO
5. Select fSYN as system clock.
b7 1 b0 CPU mode register (CPUM: address 3B16) 1 : fSYN
Fig. 2.12.6 Related registers setting
Note: When selecting fSYN as an internal system clock, refer to "2.11 Frequency synthesizer (PLL)" for details concerning how to generate fUSB (USB clock) from f(XIN) and the notes on PLL circuit.
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APPLICATION 38K2 Group 2.13 Standby function
2.13 Standby function
The 38K2 group is provided with standby functions to stop the CPU by software and put the CPU into the low-power operation. The following two types of standby functions are available. *Stop mode using STP instruction *Wait mode using WIT instruction 2.13.1 Memory map
0FFB16
MISRG (MISRG)
Fig. 2.13.1 Memory map of registers related to standby function 2.13.2 Related registers
MISRG
b7 b6 b5 b4 b3 b2 b1 b0 MISRG (MISRG: address 0FFB16)
B
0
Name
Oscillation stabilizing time set after STP instruction released bit
Functions
0 : Automatically set "0116" to Timer 1, "FF16" to Prescaler 12 1 : Automatically set nothing
At reset R W
0
1 2 3 4 5 6 7
Nothing is arranged for these bits. These are write disabled bits. When these bits are read out, the contents are indefinite.
?
Fig. 2.13.2 Structure of MISRG
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APPLICATION 38K2 Group 2.13 Standby function
2.13.3 Stop mode The stop mode is set by executing the STP instruction. In the stop mode, the oscillation of clock (XIN-XOUT) stops and the internal clock stops at the "H" level. The CPU stops and peripheral units stop operating. As a result, power dissipation is reduced. (1) State in stop mode Table 2.13.1 shows the state in the stop mode. Table 2.13.1 State in stop mode Item Oscillation CPU Internal clock I/O ports P0-P6 Timer Watchdog timer Serial I/O Stopped. Stopped. Stopped at "H" level. Retains the state at the STP instruction execution. Stopped. (Timers 1, 2, X) However, Timers X can be operated in the event counter mode. Stopped. Stopped. However, these can be operated only when an external clock is selected. USB function HUB function External BUS interface A/D converter Comparator Stopped. Stopped. Stopped. Stopped. Stopped. State in stop mode
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APPLICATION 38K2 Group 2.13 Standby function
(2) Release of stop mode The stop mode is released by a reset input or by the occurrence of an interrupt request. Note the differences in the restoration process according to reset input or interrupt request, as described below. sRestoration by reset input The stop mode is released by holding the RESET pin to the "L" input level during the stop mode. Oscillation is started when all ports are in the input state and the stop mode of the main clock (XINXOUT) is released. Oscillation is unstable when restarted. For this reason, time for stabilizing of oscillation (oscillation stabilizing time) is required. The input of the RESET pin should be held at the "L" level until oscillation stabilizes. When the RESET pin is held at the "L" level for 16 cycles or more of XIN after the oscillation has stabilized, the microcomputer will go to the reset state. After the input level of the RESET pin is returned to "H", the reset state is released in approximately 10.5 to 18.5 cycles of the XIN input. Figure 2.13.3 shows the oscillation stabilizing time at restoration by reset input. At release of the stop mode by reset input, the internal RAM retains its contents previous to the reset. However, the previous contents of the CPU register and SFR are not retained. For more details concerning reset, refer to "2.10 Reset".
Stop mode
Oscillation 16 cycles or stabilizing time more of XIN
Operating mode
Vcc
Time to hold internal reset state = approximately 10.5 to 18.5 cycles of XIN input
RESET XIN
Execute Stop instruction
Fig. 2.13.3 Oscillation stabilizing time at restoration by reset input
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APPLICATION 38K2 Group 2.13 Standby function
sRestoration by interrupt request The occurrence of an interrupt request in the stop mode releases the stop mode. As a result, oscillation is resumed. The interrupts available for restoration are: *INT0, INT1 *CNTR0 *Serial I/O using an external clock *Timer X using an external event count *Key input (key-on wake-up) *USB function (resume) However, when using any of these interrupt requests for restoration from the stop mode, in order to enable the selected interrupt, you must execute the STP instruction after setting the following conditions. [Necessary register setting] Interrupt disable flag I = "0" (interrupt enabled) Timer 1 interrupt enable bit = "0" (interrupt disabled) Interrupt request bit of interrupt source to be used for restoration = "0" (no interrupt request issued) Interrupt enable bit of interrupt source to be used for restoration = "1" (interrupts enabled) For more details concerning interrupts, refer to "2.2 Interrupts". Oscillation is unstable when restarted. For this reason, time for stabilizing of oscillation (oscillation stabilizing time) is required. For restoration by an interrupt request, waiting time prior to supplying internal clock to the CPU is automatically generated2 by Prescaler 12 and Timer 11. This waiting time is reserved as the oscillation stabilizing time on the system clock side. The supply of internal clock to the CPU is started at the Timer 1 underflow. Figure 2.13.4 shows an execution sequence example at restoration by the occurrence of an INT0 interrupt request. 1: If the STP instruction is executed when the oscillation stabilizing time set after STP instruction released bit is "0", "FF16" and "0116" are automatically set in the Prescaler 12 counter/latch and Timer 1 counter/latch, respectively. When the oscillation stabilizing time set after STP instruction released bit is "1", nothing is automatically set to either Prescaler 12 or Timer 1. For this reason, any suitable value can be set to Prescaler 12 and Timer 1 for the oscillation stabilizing time. 2: Immediately after the oscillation is started, the count source is supplied to the prescaler 12 so that a count operation is started.
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APPLICATION 38K2 Group 2.13 Standby function
qWhen restoring microcomputer from stop mode by INT0 interrupt (rising edge selected) Stop mode XIN (System clock) INT0 pin FF16 Prescaler 12 counter Timer 1 counter 0116 512 counts XIN; H Oscillation stabilizing time
INT0 interrupt request bit Peripheral device CPU Stopped Stopped Operating Operating
Operating
Operating
Execute STP instruction
INT0 interrupt signal input (INT0 interrupt request occurs) Oscillation start Prescaler 12 count start
512 counts down by prescaler 12 Start supplying internal clock to CPU Accept INT0 interrupt request
Note: f(XIN)/16 is input as the prescaler 12 count source.
Fig. 2.13.4 Execution sequence example at restoration by occurrence of INT0 interrupt request (3) Notes on using stop mode sRegister setting Since values of the prescaler 12 and Timer 1 are automatically reloaded when returning from the stop mode, set them again, respectively. (When the oscillation stabilizing time set after STP instruction released bit is "0") sClock restoration When the main clock side is set as a system clock, the oscillation stabilizing time for approximately 8,000 cycles of the XIN input is reserved at restoration from the stop mode.
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APPLICATION 38K2 Group 2.13 Standby function
2.13.4 Wait mode The wait mode is set by execution of the WIT instruction. In the wait mode, oscillation continues, but the internal clock stops at the "H" level. The CPU stops, but most of the peripheral units continue operating. (1) State in wait mode The continuation of oscillation permits clock supply to the peripheral units. Table 2.13.2 shows the state in the wait mode. Table 2.13.2 State in wait mode Item Oscillation CPU Internal clock I/O ports P0-P6 Timer Watchdog timer Serial I/O USB function HUB function External BUS interface A/D converter Comparator Operating. Stopped. Stopped at "H" level. Retains the state at the WIT instruction execution. Operating. Operating. Operating. Operating. Operating. Stopped. Operating. Operating. State in wait mode
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APPLICATION 38K2 Group 2.13 Standby function
(2) Release of wait mode The wait mode is released by reset input or by the occurrence of an interrupt request. Note the differences in the restoration process according to reset input or interrupt request, as described below. In the wait mode, oscillation is continued, so an instruction can be executed immediately after the wait mode is released. sRestoration by reset input The wait mode is released by holding the input level of the RESET pin at "L" in the wait mode. Upon release of the wait mode, all ports are in the input state, and supply of the internal clock to the CPU is started. To reset the microcomputer, the RESET pin should be held at an "L" level for 16 cycles or more of XIN. The reset state is released in approximately 10.5 cycles to 18.5 cycles of the XIN input after the input of the RESET pin is returned to the "H" level. At release of wait mode, the internal RAM retains its contents previous to the reset. However, the previous contents of the CPU register and SFR are not retained. Figure 2.13.5 shows the reset input time. For more details concerning reset, refer to "2.10 Reset".
Wait mode
Operating mode
Vcc
16 cycles of XIN Time to hold internal reset state = approximately 10.5 to 18.5 cycles of XIN input
RESET XIN
Execute WIT instruction
Fig. 2.13.5 Reset input time
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APPLICATION 38K2 Group 2.13 Standby function
sRestoration by interrupt request In the wait mode, the occurrence of an interrupt request releases the wait mode and supply of the internal clock to the CPU is started. At the same time, the interrupt request used for restoration is accepted, so the interrupt processing routine is executed. However, when using an interrupt request for restoration from the wait mode, in order to enable the selected interrupt, you must execute the STP instruction after setting the following conditions. [Necessary register setting] Interrupt disable flag I = "0" (interrupt enabled) Interrupt request bit of interrupt source to be used for restoration = "0" (no interrupt request issued) Interrupt enable bit of interrupt source to be used for restoration = "1" (interrupts enabled) For more details concerning interrupts, refer to "2.2 Interrupts". 2.13.5 Notes on stand-by function In stand-by state* 1 for low-power dissipation, do not make input levels of an input port and an I/O port "undefined". Pull-up (connect the port to VCC) these ports through a resistor. When determining a resistance value, note the following points: * External circuit * Variation of output levels during the ordinary operation When using built-in pull-up resistor, note on varied current values. * When setting as an input port: Fix its input level * When setting as an output port: Prevent current from flowing out to external q Reason The potential which is input to the input buffer in a microcomputer is unstable in the state that input levels of an input port and an I/O port are "undefined". This may cause power source current. * 1 stand-by state : the stop mode by executing the STP instruction the wait mode by executing the WIT instruction
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APPLICATION 38K2 Group 2.14 Flash memory
2.14 Flash memory
This paragraph explains the registers setting method and the notes related to the flash memory version. 2.14.1 Overview The functions of the flash memory version are similar to those of the mask ROM version except that the flash memory is built-in and some of the SFR area differ from that of the mask ROM version (refer to "2.14.2 Memory map"). In the flash memory version, the built-in flash memory can be programmed or erased by using the following three modes. * CPU rewrite mode * Parallel I/O mode * Standard serial I/O mode 2.14.2 Memory map 38K2 group flash memory version has 32 Kbytes of built-in flash memory. Figure 2.14.1 shows the memory map of the flash memory version.
000016
SFR area
004016
RAM
Internal RAM area (2 Kbyte)
083F16 084016 User ROM area
Not used
0FE016
800016
SFR area
0FFF16 100016 800016 808016
Not used
Reserved ROM area
32 Kbytes
Built-in flash memory area (32 Kbytes)
FFFF16 FFFF16
Boot ROM area F00016 4 Kbytes FFFF16
Note: Access to boot ROM area Pararell I/O mode CPU rewrite mode Standard serial mode
Read/Write avilable Read only available Read only available
Fig. 2.14.1 Memory map of flash memory version for 38K2 Group
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APPLICATION 38K2 Group 2.14 Flash memory
2.14.3 Related registers
Address
0FFE16
Flash memory control register (FMCR)
Fig. 2.14.2 Memory map of registers related to flash memory
Flash memory control register
b7 b6 b5 b4 b3 b2 b1 b0
Flash memory control register (FMCR : address 0FFE16) (Note 1)
b
Name
Functions
0 : Busy (being written or erased) 1 : Ready
At reset R W
1
0 RY/BY status flag
1 CPU rewrite mode select bit (Note 2)
2 3 4 5 6 7
0 0 : Normal mode (Software commands invalid) 1 : CPU rewrite mode (Software commands acceptable) CPU rewrite mode 0: Normal mode 0 entry flag 1: CPU rewrite mode Flash memory reset 0: Normal operation 0 bit (Note 3) 1: Reset User area/Boot area 0: User ROM area 0 selection bit (Note 4) 1: Boot ROM area Undefined Nothing is arranged for these bits. If writing, set "0". When these bits are read out, Undefined the contents are undefined. Undefined
Notes 1: The contents of flash memory control register are "XXX00001" just after reset release. 2: For this bit to be set to "1", the user needs to write "0" and then "1" to it in succession. If it is not this procedure, this bit will not be set to "1". Additionally, it is required to ensure that no interrupt will be generated during that interval. Use the control program in the area except the built-in flash memory for write to this bit. 3: This bit is valid when the CPU rewrite mode select bit is "1". Set this bit 3 to "0" subsequently after setting bit 3 to "1". 4: Use the control program in the area except the built-in flash memory for write to this bit.
Fig. 2.14.3 Structure of Flash memory control register
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APPLICATION 38K2 Group 2.14 Flash memory
2.14.4 Parallel I/O mode In the parallel I/O mode, program/erase to the built-in flash memory can be performed by a flash programmer (MFW-1). The memory area of program/erase is from 0F00016 to 0FFFF16 (boot ROM area) or from 0800016 to 0FFFF16 (user ROM area). Be especially careful when erasing; if the memory area is not set correctly, the products will be damaged eternally. Table 2.14.1 shows the setting of programmers when programming in the parallel I/O mode. *MFW-1 provided by Sunny Giken Inc. (http://www.sunnygiken.co.jp/english/index.html)
Table 2.14.1 Setting of programmers when parallel programming Products M38K29F8HP/LHP M38K29F8FP/LFP Parallel adapter MFW-S18 MFW-S19 Boot ROM area 0F00016 to 0FFFF16 User ROM area 0800016 to 0FFFF16
2.14.5 Standard serial I/O mode Table 2.14.2 shows a pin connection example (4 wires) between the programmer (MFW-1) and the microcomputer when programming in the standard serial I/O mode. *MFW-1 provided by Sunny Giken Inc. (http://www.sunnygiken.co.jp/english/index.html)
Table 2.14.2 Connection example to flash programmer when serial programming (4 wires) 38K2 Group flash memory version MFW-1 MFW-1 side connector Signal name Pin name Pin number Line number CLK RXD TXD BUSY CNVSS RESET VCC (Note 2) GND (Note 1) 3 10 4 2 1 8 1 7 P42/EXTC/SCLK P40/EXDREQ/RXD P41/EXDACK/TxD
______
Function Transfer clock input Serial data input Serial data output Transmit/Receive enable output VPP input Reset input Target board power source monitor input GND
53 51 52 54 7 8 14, 21, 22
P43/EXA1/SRDY CNVSS ____________ RESET VCC, PVCC, DVCC (Note 2)
VSS, PVSS (Note 1) 11, 20 Notes 1: When connecting a serial programmer, first connect both GNDs to the same GND level. 2: VCC power of MFW-1 is supplied from a target board. Power consumption of MFW-1 is Max. 200 mA when serial programming. Therefore, when the current capacity of target borad is short, connect AC adapter and supply power source to MFW-1.
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APPLICATION 38K2 Group 2.14 Flash memory
2.14.6 CPU rewrite mode In the CPU rewrite mode, issuing software commands through the Central Processing Unit (CPU) can rewrite the built-in flash memory. Accordingly, the contents of the built-in flash memory can be rewritten with the microcomputer itself mounted on board, without using the programmer. Store the rewrite control program to the built-in flash memory in advance. The built-in flash memory cannot be read in the CPU rewrite mode. Accordingly, after transferring the rewrite control program to the internal RAM, execute it on the RAM. The following commands can be used in the CPU rewrite mode: read array, read status register, clear status register, program, erase all block, and block erase. For details concerning each command, refer to "CHAPTER 1 Flash memory mode (CPU rewrite mode)". (1) CPU rewrite mode beginning/release procedures Operation procedure in the CPU rewrite mode for the built-in flash memory is described below. As for the control example, refer to "2.14.7 (2) Control example in the CPU rewrite mode." [Beginning procedure] Apply 4.50 to 5.25 V to the CNVSS/VPP pin (at selecting boot ROM area). Release reset. Set bits 6 and 7 (main clock division ratio selection bits) of the CPU mode register. After CPU rewrite mode control program is transferred to internal RAM, jump to this control program on RAM. (The following operations are controlled by this control program). Apply 4.50 to 5.25 to the CNVSS/VPP pin (in single-chip mode). Set "1" to the CPU rewrite mode select bit (bit 1 of address 0FFE16). Read the CPU rewrite mode entry flag (bit 2 of address 0FFE16) to confirm that the CPU rewrite mode is set to "1". Flash memory operations are executed by using software commands. Note: The following procedures are also necessary. * Control for data which is input from the external (serial I/O etc.) and to be programmed to the flash memory. * Initial setting for ports, etc. * Writing to the watchdog timer [Release procedure] Execute the read command or set the flash memory reset bit (bit 3 of address 0FFE16). Set the CPU rewrite mode select bit (bit 0 of address 0FFE16) to "0".
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APPLICATION 38K2 Group 2.14 Flash memory
2.14.7 Flash memory mode application examples The control pin processing example on the system board in the standard serial I/O mode and the control example in the CPU rewrite mode are described below. (1) Control pin connection example on the system board in standard serial I/O mode As shown in Figure 2.14.4, in the standard serial I/O mode, the built-in flash memory can be rewritten with the microcomputer mounted on board. ______ Connection examples ____________ of control pins (P40/EXDREQ/RXD, P41/EXDACK/TXD, P42/EXTC/SCLK, P43/EXA1/SRDY, P16, CNVSS, and RESET pin) in the standard serial I/O mode are described below.
RS-232C Serial programmer
M3 M3 8K2 8K 9F8 29 F F8 P/H LF P P/ LH P
Fig. 2.14.4 Rewrite example of built-in flash memory in standard serial I/O mode Table 2.14.3 shows the setting condition in the standard serial I/O mode. Table 2.14.3 Setting condition in serial I/O mode 38K2 Group flash memory version Pin name Pin number CNVSS/VPP (Note) P16 P42/EXTC/SCLK
____________
Value 4.50 to 5.25 V VCC VCC Edge from VSS to VCC
7 5 53 8
RESET
Note: CNVSS/VPP is not VCC but a voltage when programming.
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APPLICATION 38K2 Group 2.14 Flash memory
When control signals are not affected to user system circuit When the control signals in the standard serial I/O mode are not used or not affected to the user system circuit, they can be connected as shown in Figure 2.14.5.
Target board
1 Not used or to user system circuit M38K29F8FP/HP M38K29F8LFP/LHP 2
TXD(P41/ExDACK) SCLK(P42/ExTC) RXD(P40/ExDREQ) BUSY(P43/ExA1) (P16) VPP(CNVSS) RESET
User reset signal (Low active) XIN XOUT
DVCC PVCC VCC PVSS VSS
1: When not used, set to input mode and pull up or pull down, or set to output mode and open. 2: It is necessary to apply Vcc to SCLK (P42/ExTC) pin only when reset is released in the standard serial I/O mode.
Fig. 2.14.5 Connection example in standard serial I/O mode (1) When control signals are affected to user system circuit-1 Figure 2.14.6 shows an example that the jumper switch cut-off the control signals not to supply to the user system circuit in the standard serial I/O mode.
Target board
To user system circuit M38K29F8FP/HP M38K29F8LFP/LHP
TXD(P41/ExDACK) SCLK(P42/ExTC) RXD(P40/ExDREQ) BUSY(P43/ExA1) (P16) VPP(CNVSS) RESET
User reset signal (Low active) XIN XOUT
DVCC PVCC VCC PVSS VSS
: It is necessary to apply Vcc to SCLK (P42/ExTC) pin only when reset is released in the standard serial I/O mode.
Fig. 2.14.6 Connection example in standard serial I/O mode (2)
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APPLICATION 38K2 Group 2.14 Flash memory
When control signals are affected to user system circuit-2 Figure 2.14.7 shows an example that the analog switch (74HC4066) cut-off the control signals not to supply to the user system circuit in the standard serial I/O mode.
Target board
74HC4066
To user system circuit
M38K29F8FP/HP M38K29F8LFP/LHP
TXD(P41/ExDACK) SCLK(P42/ExTC) RXD(P40/ExDREQ) BUSY(P43/ExA1) (P16) VPP(CNVss) RESET
User reset signal (Low active) XIN XOUT
DVCC PVCC VCC PVSS VSS
: It is necessary to apply Vcc to SCLK (P42/ExTC) pin only when reset is released in the standard serial I/O mode.
Fig. 2.14.7 Connection example in standard serial I/O mode (3)
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APPLICATION 38K2 Group 2.14 Flash memory
(2) Control example in CPU rewrite mode In this example, data is received by using serial I/O, and the data is programmed to the built-in flash memory in the CPU rewrite mode. Figure 2.14.8 shows an example of the reprogramming system for the built-in flash memory in the CPU rewrite mode. Figure 2.14.9 shows the CPU rewrite mode beginning/release flowchart.
M38K29F8FP/HP M38K29F8LFP/LHP
P16(CE)
Clock input BUSY output Data input Data output
SCLK SRDY(BUSY) RXD TXD
DVCC PVCC VCC PVSS VSS
VPP power source input
(Note 1)
RESET CNVSS User reset signal
Note 1: Apply 4.50 to 5.25 V to the VPP power source.
Fig. 2.14.8 Example of rewrite system for built-in flash memory in CPU rewrite mode
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APPLICATION 38K2 Group 2.14 Flash memory
START
Single-chip mode or boot mode (Note 1)
Set CPU mode register (Note 2)
Transfer CPU rewrite mode control program to built-in RAM
Jump to transferred control program on RAM
(The following operations are controlled by the control program on this RAM) Set "1" to CPU rewrite mode select bit (by writing "0" and then "1" in succession)
Check CPU rewrite mode entry flag
Using software command execute erase, program, or other operation Execute read command or set flash memory reset bit (by writing "0" and then " 1" in succession) (Note 3)
Set "0" to CPU rewrite mode select bit
END Notes 1: When MCU starts in the single-chip mode, it is necessary to apply 4.50 to 5.25 V to dhe CNVss pin until confirming of the CPU rewrite mode entry flag. 2: Set bits 6 and 7 (system clock division ratio selection bits) of the CPU mode register (address 003B16). 3: Before releasing the CPU rewrite mode after completing erase or program operation, always be sure to execute the read array command or reset the flash memory.
Fig. 2.14.9 CPU rewrite mode beginning/release flowchart
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APPLICATION 38K2 Group 2.14 Flash memory
2.14.8 Notes on CPU rewrite mode (1) Operation speed During CPU rewrite mode, set the internal clock 1.5 MHz or less using the system clock division ratio selection bits (bits 6 and 7 of address 003B16). (2) Instructions inhibited against use The instructions which refer to the internal data of the flash memory cannot be used during the CPU rewrite mode . (3) Interrupts inhibited against use The interrupts cannot be used during the CPU rewrite mode because they refer to the internal data of the flash memory. (4) Watchdog timer In case of the watchdog timer has been running already, the internal reset generated by watchdog timer underflow does not happen, because of watchdog timer is always clearing during program or erase operation. (5) Reset Reset is always valid. In case of CNVSS = "H" when reset is released, boot mode is active. So the program starts from the address contained in address FFFC16 and FFFD16 in boot ROM area.
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CHAPTER 3 APPENDIX
3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Electrical characteristics Notes on use Countermeasures against noise List of registers Package outline List of instruction code Machine instructions SFR memory map Pin configurations
APPENDIX 38K2 Group 3.1 Electrical characteristics (L.Ver)
3.1 Electrical characteristics
3.1.1 Absolute maximum ratings
Table 3.1.1 Absolute maximum ratings Symbol VCC AVCC VI VI VI VI VO Power source voltage Analog power source voltage VCCE, VREF, PVCC, DVCC, USBVREF Input voltage Input voltage Input voltage Input voltage Output voltage P00-P07, P10-P17, P24-P27, P30- P37, P40-P43, P50-P57, P60-P63 RESET, XIN, CNVSS2 CNVSS Mask ROM version Flash memory version D0+, D0-, D1+, D1-, D2+, D2P00-P07, P10-P17, P24-P27, P30- P37, P40-P43, P50-P57, P60-P63, XOUT D0+, D0-, D1+, D1-, D2+, D2-, TrON (Note) Ta = 25C MCU operating In flash memory mode (For flash memory version) Tstg Storage temperature All voltages are based on VSS. Output transistors are cut off. Parameter Conditions Ratings -0.3 to 6.5 -0.3 to VCC + 0.3 -0.3 to VCC + 0.3 -0.3 to VCC + 0.3 -0.3 to VCC + 0.3 -0.3 to 6.5 -0.5 to 3.8 -0.3 to VCC + 0.3 Unit V V V V V V V V
VO Pd Topr
Output voltage Power dissipation
-0.5 to 3.8 500 -20 to 85 255
V mW C C
Operating temperature
-40 to 125
C
Note: The maximum rating value depends on not only the MCU's power dissipation but the heat consumption characteristics of the package.
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APPENDIX 38K2 Group 3.1 Electrical characteristics (L.Ver)
3.1.2 Recommended operating conditions (L.Ver)
Table 3.1.2 Recommended operating conditions (Vcc = 3.00 to 5.25 V, Vss = 0 V, Ta = -20 to 85C, unless otherwise noted) Symbol VCC Power source voltage Parameter VCC System clock 12 MHz (2-/4-/8-divide mode) System clock 8 MHz System clock 6 MHz AVCC AVCC VREF VREF VSS AVSS VIH VIH VIH VIH VIL VIL VIL VIL Analog power source voltage Analog power source voltage Analog reference voltage Analog reference voltage Power source voltage Analog power source voltage "H" input voltage "H" input voltage "H" input voltage "H" input voltage "L" input voltage "L" input voltage "L" input voltage "L" input voltage PVCC, DVCC VCCE VREF USBVREF VSS PVSS P00-P07, P24-P27, P50-P57, P60-P63 P10-P17, P30-P37, P40-P43 RESET, XIN, CNVSS, CNVSS2 D0+, D0-, D1+, D1-, D2+, D2P00-P07, P24-P27, P50-P57, P60-P63 P10-P17, P30-P37, P40-P43 RESET, XIN, CNVSS, CNVSS2 D0+, D0-, D1+, D1-, D2+, D20.8VCC 0.8VCCE 0.8VCC 2.0 0 0 0 0 Vcc = 3.6 to 4.0 V Vcc = 3.0 to 3.6 V 2.0 3.0 3.0 0 0 VCC VCCE VCC 3.6 0.2VCC 0.2VCCE 0.2VCC 0.8 Limits Min. 4.00 4.00 3.00 Typ. 5.00 5.00 5.00 VCC VCC VCC 3.6 VCC Max. 5.25 5.25 5.25 Unit V V V V V V V V V V V V V V V V V V V
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APPENDIX 38K2 Group 3.1 Electrical characteristics (L.Ver)
Table 3.1.3 Recommended operating conditions (Vcc = 3.00 to 5.25 V, Vss = 0 V, Ta = -20 to 85C, unless otherwise noted) Symbol IOH(peak) IOH(peak) IOL(peak) IOL(peak) IOL(peak) IOH(avg) IOH(avg) IOL(avg) IOL(avg) IOL(avg) IOH(peak) IOH(peak) IOL(peak) IOL(peak) IOL(peak) IOH(avg) IOH(avg) IOL(avg) IOL(avg) IOL(avg) f(XIN) f(XIN) or f(SYN) f() frequency Parameter "H" total peak output current (Note 1) "H" total peak output current (Note 1) "L" total peak output current (Note 1) "L" total peak output current (Note 1) "L" total peak output current (Note 1) "H" total average output current (Note 1) "H" total average output current (Note 1) "L" total average output current (Note 1) "L" total average output current (Note 1) "L" total average output current (Note 1) "H" peak output current (Note 2) "H" peak output current (Note 2) "L" peak output current (Note 2) "L" peak output current (Note 2) "L" peak output current (Note 2) "H" average output current (Note 3) "H" average output current (Note 3) "L" average output current (Note 3) "L" average output current (Note 3) "L" average output current (Note 3) Main clock input oscillation frequency (Note 4) System clock frequency P00-P07, P24-P27, P50-P57, P60-P63 P10-P17, P30-P37, P40-P43 P00-P07, P24-P27, P50-P57 P60-P63 P10-P17, P30-P37, P40-P43 P00-P07, P24-P27, P50-P57, P60-P63 P10-P17, P30-P37, P40-P43 P00-P07, P24-P27, P50-P57 P60-P63 P10-P17, P30-P37, P40-P43 P00-P07, P24-P27, P50-P57, P60-P63 P10-P17, P30-P37, P40-P43 P00-P07, P24-P27, P50-P57 P60-P63 P10-P17, P30-P37, P40-P43 P00-P07, P24-P27, P50-P57, P60-P63 P10-P17, P30-P37, P40-P43 P00-P07, P24-P27, P50-P57 P60-P63 P10-P17, P30-P37, P40-P43 Vcc = 4.00 to 5.25 V Vcc = 3.00 to 4.00 V Vcc = 4.00 to 5.25 V Vcc = 3.00 to 4.00 V Vcc = 4.00 to 5.25 V Vcc = 3.00 to 4.00 V 6 6 6 6 Limits Min. Typ. Max. -80 -80 80 80 80 -40 -40 40 40 40 -10 -10 10 20 10 -5 -5 5 10 5 12 6 12 6 8 6 Unit mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA MHz MHz MHz MHz MHz MHz
Notes 1: The total peak output current is the absolute value of the peak currents flowing through all the applicable ports. The total average output current is the average value of the absolute value of the currents measured over 100 ms flowing through all the applicable ports. 2: The peak output current is the absolute value of the peak current flowing in each port. 3: The average output current is the average value of the absolute value of the currents measured over 100 ms. 4: The duty of oscillation frequency is 50 %. 6 MHz or 12 MHz is usable.
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APPENDIX 38K2 Group 3.1 Electrical characteristics (L.Ver)
3.1.3 Electrical characteristics (L.Ver)
Table 3.1.4 Electrical characteristics (1) (Vcc = 3.00 to 5.25 V, Vss = 0 V, Ta = -20 to 85C, unless otherwise noted) Symbol VOH Parameter "H" output voltage P00-P07, P24-P27, P50-P57, P60-P63 "H" output voltage P10-P17, P30-P37, P40-P43 "H" output voltage D0+, D0-, D1+, D1-, D2+, D2"L" output voltage P00-P07, P24-P27, P50-P57 "L" output voltage P60-P63 "L" output voltage P10-P17, P30-P37, P40-P43 Test conditions IOH = -10 mA (Vcc = 4.00 to 5.25 V) IOH = -1 mA IOH = -10 mA (VCCE = 4.00 to 5.25 V) IOH = -1 mA D+ and D- pins pulldown with 0 V via a resistor of 15 k 5 % IOL = 10 mA (Vcc = 4.00 to 5.25 V) IOL = 1 mA IOL = 20 mA (Vcc = 4.00 to 5.25 V) IOL = 1 mA IOL = 10 mA (VCCE = 4.00 to 5.25 V) IOL = 1 mA (VCCE = 3.00 to 5.25 V) D+ and D- pins pull-up with 3.6 V via a resistor of 1.5 k 5 % Min. VCC-2.0 VCC-1.0
VCCE-2.0 VCCE-1.0
Limits Typ.
Max.
Unit V V V V
VOH
VOH
2.8
3.6
V
VOL
2.0 1.0 2.0 1.0 2.0 1.0 0 0.3
V V V V V V V
VOL
VOL
VOL
"L" output voltage D0+, D0-, D1+, D1-, D2+, D2Hysteresis CNTR0, INT0, INT1 Hysteresis P10/DQ0-P17/DQ7, P30-P32, P33/ExINT, P34/ExCS, P35/ExWR, P36/ExRD, P37/ ExA0, P40/ExDREQ/RxD, P41/ExDACK/ TxD, P42/ExTC/SCLK, P43/ExA1/SRDY Hysteresis D0+, D0-, D1+, D1-, D2+, D2Hysteresis RESET "H" input current P00-P07, P24-P27, P50-P57, P60-P63 "H" input current P10-P17, P30-P37, P40-P43 "H" input current RESET, CNVSS "H" input current XIN "L" input current P00-P07, P24-P27, P50-P57, P60-P63 "L" input current P10-P17, P30-P37, P40-P43 "L" input current RESET, CNVSS, CNVSS2 "L" input current XIN "L" input current P00-P07, P50, P52 (Pull-ups "on") RAM hold voltage
VT+-VTVT+-VT-
0.6 0.6
V V
VT+-VT VT+-VTIIH IIH IIH IIH IIL IIL IIL IIL IIL
0.25 0.5 VI = VCC (Pull-ups "off") VI = VCCE VI = VCC VI = VCC VI = VSS (Pull-ups "off") VI = VSS VI = VSS VI = VSS VI = VSS (Vcc = 4.00 to 5.25 V) VI = VSS When clock is stopped 5.0 5.0 5.0 4.0 -5.0 -5.0 -5.0 -20.0 -10.0 2.00 -4.0 -60.0 -120.0
V V A A A A A A A A A A V
VRAM
5.25
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APPENDIX 38K2 Group 3.1 Electrical characteristics (L.Ver)
Table 3.1.5 Electrical characteristics (2) (Vcc = 3.00 to 5.25 V, Vss = 0 V, Ta = -20 to 85C, unless otherwise noted) Symbol ICC Parameter Power source current (Output transistor is isolated.) Normal mode (Note 1) Vcc = 4.00 to 5.25 V Test conditions f(XIN) = system clock = 12 MHz, = 6 MHz, USB reference voltage circuit enabled f(XIN) = 12 MHz, System clock = = 8 MHz, USB reference voltage circuit enabled f(XIN) = 6 MHz, System clock = = 8 MHz, USB reference voltage circuit enabled f(XIN) = system clock = = 6 MHz, USB reference voltage circuit enabled f(XIN) = system clock = = 6 MHz, USB reference voltage circuit disabled f(XIN) = system clock = = 6 MHz, USB reference voltage circuit disabled f(XIN) = 12 MHz, System clock = = 8 MHz, USB reference voltage circuit enabled f(XIN) = system clock = = 6 MHz, USB reference voltage circuit disabled USB reference voltage circuit enabled Low current mode USB reference voltage circuit disabled Ta = 25 C USB reference voltage circuit disabled Ta = 85 C Min. Limits Typ. 21.0 Max. 60 Unit mA
22.5
60
mA
22.0
60
mA
21.0
60 35
mA mA mA mA
Vcc = 3.00 to 4.00 V Vcc = 3.00 to 3.60 V Vcc = 4.00 to 5.25 V Vcc = 3.00 to 4.00 V Stop mode (Note 3) Vcc = 4.00 to 5.25 V Vcc = 3.00 to 5.25 V
9.0 6.0
30
Wait mode (Note 2)
2.0 125.0 0.1 10 250
mA A A A
Notes 1: Operating in single-chip mode Clock input from XIN pin (XOUT oscillator stopped) fUSB = 48 MHz All USB difference-input circuits enabled Leaving I/O pins open Operating functions: PLL circuit, CPU, Timers 2: Operating in single-chip mode with Wait mode Clock input from XIN pin (XOUT oscillator stopped) fUSB = 48 MHz All USB difference-input circuits enabled Leaving I/O pins open Operating functions: PLL circuit, Timers, USB receiving Disabled functions: CPU 3: Operating in single-chip mode with Stop mode Oscillation stopped All USB difference-input circuits disabled Leaving I/O pins open
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APPENDIX 38K2 Group 3.1 Electrical characteristics (L.Ver)
3.1.4 A/D converter characteristics (L.Ver)
Table 3.1.6 A/D Converter characteristics (VCC = 3.00 to 5.25 V, VSS = 0 V, Ta = -20 to 85C, unless otherwise noted) Symbol -- -- -- VOT VFST tCONV Resolution Linearity error Differential nonlinear error Zero transition voltage Full scale transition voltage Conversion time Ta = 25 C Ta = 25 C VCC = VREF = 5.12 V VCC = VREF = 5.12 V 0 5105 15 5125 Parameter Test conditions Limits Min. Typ. Max. 10 3 1.5 35 5150 122 Unit Bits LSB LSB mV mV tc(XIN) or tc(fSYN) k A A
RLADDER IVREF II(AD)
Ladder resistor Reference power source input current A/D port input current
A/D converter operating; VREF = 5.0 V A/D converter not operating; VREF = 5.0 V
35 50 150 200 5 5.0
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APPENDIX 38K2 Group 3.1 Electrical characteristics (L.Ver)
3.1.5 Timing Requirements (L.Ver)
Table 3.1.7 Timing requirements (1) (VCC = 4.00 to 5.25 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol tW(RESET) tC(XIN) tWH(XIN) tWL(XIN) tC(CNTR) tWH(CNTR) tWL(CNTR) tWH(INT) tWL(INT) tC(SCLK) tWH(SCLK) tWL(SCLK) tsu(RxD-SCLK) th(SCLK-RxD) Reset input "L" pulse width Main clock input cycle time Main clock input "H" pulse width Main clock input "L" pulse width CNTR0 input cycle time CNTR0 input "H" pulse width CNTR0 input "L" pulse width INT0, INT1 input "H" pulse width INT0, INT1 input "L" pulse width Serial I/O clock input cycle time (Note) Serial I/O clock input "H" pulse width (Note) Serial I/O clock input "L" pulse width (Note) Serial I/O input set up time Serial I/O input hold time Parameter Limits Min. 2 83 35 35 200 80 80 80 80 800 370 370 220 100 Typ. Max. Unit s ns ns ns ns ns ns ns ns ns ns ns ns ns
Note: These limits are the rating values in the clock synchronous mode, bit 6 of address 0FE016 = "1". In the UART mode, bit 6 of address 0FE016 = "0"; the rating values are set to one fourth.
Table 3.1.8 Timing requirements (2) (VCC = 3.00 to 4.00 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol tW(RESET) tC(XIN) tWH(XIN) tWL(XIN) tC(CNTR) tWH(CNTR) tWL(CNTR) tWH(INT) tWL(INT) tC(SCLK) tWH(SCLK) tWL(SCLK) tsu(RxD-SCLK) th(SCLK-RxD) Reset input "L" pulse width Main clock input cycle time Main clock input "H" pulse width Main clock input "L" pulse width CNTR0 input cycle time CNTR0 input "H" pulse width CNTR0 input "L" pulse width INT0, INT1 input "H" pulse width INT0, INT1 input "L" pulse width Serial I/O clock input cycle time (Note) Serial I/O clock input "H" pulse width (Note) Serial I/O clock input "L" pulse width (Note) Serial I/O input set up time Serial I/O input hold time Parameter Limits Min. 2 166 70 70 500 230 230 230 230 2000 950 950 400 200 Typ. Max. Unit s ns ns ns ns ns ns ns ns ns ns ns ns ns
Note: These limits are the rating values in the clock synchronous mode, bit 6 of address 0FE016 = "1". In the UART mode, bit 6 of address 0FE016 = "0"; the rating values are set to one fourth.
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APPENDIX 38K2 Group 3.1 Electrical characteristics (L.Ver)
Table 3.1.9 Timing requirements of external bus interface (EXB) (1) (VCC = 4.00 to 5.25 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol tsu(S-R) tsu(S-W) th(R-S) th(W-S) tsu(A-R) tsu(A-W) th(R-A) th(W-A) tsu(ACK-R) tsu(ACK-W) th(R-ACK) th(W-ACK) tWH(R) tWL(R) tWH(W) tWL(W) tWH(ACK) tWL(ACK) tsu(D-W) th(W-D) tsu(D-ACK) th(ACK-W) tC() tW(cycle) ExCS setup time for read ExCS setup time for write ExCS hold time for read ExCS hold time for write ExA0, ExA1 setup time for read ExA0, ExA1 setup time for write ExA0, ExA1 hold time for read ExA0, ExA1 hold time for write ExDACK setup time for read ExDACK setup time for write ExDACK hold time for read ExDACK hold time for write Read "H" pulse width Read "L" pulse width Write "H" pulse width Write "L" pulse width ExDACK "H" pulse width ExDACK "L" pulse width Data input setup time before write Data input hold time after write Data input setup time before ExDACK Data input hold time after ExDACK CPU clock cycle time Burst mode access cycle time USB function not operating USB function operating Parameter Limits Min. 0 0 0 0 10 10 0 0 10 10 0 0 80 80 80 80 120 120 40 0 60 5 125 tC()*3+10 tC()*5+10 Typ. Max. Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
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APPENDIX 38K2 Group 3.1 Electrical characteristics (L.Ver)
Table 3.1.10 Timing requirements of external bus interface (EXB) (2) (VCC = 3.00 to 4.00 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol tsu(S-R) tsu(S-W) th(R-S) th(W-S) tsu(A-R) tsu(A-W) th(R-A) th(W-A) tsu(ACK-R) tsu(ACK-W) th(R-ACK) th(W-ACK) tWH(R) tWL(R) tWH(W) tWL(W) tWH(ACK) tWL(ACK) tsu(D-W) th(W-D) tsu(D-ACK) th(ACK-W) tC() tW(cycle) ExCS setup time for read ExCS setup time for write ExCS hold time for read ExCS hold time for write ExA0, ExA1 setup time for read ExA0, ExA1 setup time for write ExA0, ExA1 hold time for read ExA0, ExA1 hold time for write ExDACK setup time for read ExDACK setup time for write ExDACK hold time for read ExDACK hold time for write Read "H" pulse width Read "L" pulse width Write "H" pulse width Write "L" pulse width ExDACK "H" pulse width ExDACK "L" pulse width Data input setup time before write Data input hold time after write Data input setup time before ExDACK Data input hold time after ExDACK CPU clock cycle time Burst mode access cycle time USB function not operating USB function operating Parameter Limits Min. 0 0 0 0 30 30 0 0 30 30 0 0 120 120 120 120 160 160 60 0 80 10 166 tC()*3+30 tC()*5+30 Typ. Max. Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
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APPENDIX 38K2 Group 3.1 Electrical characteristics (L.Ver)
3.1.6 Switching Characteristics (L.Ver)
Table 3.1.11 Switching characteristics (1) (VCC = 4.00 to 5.25 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Limits Symbol Parameter Min. Typ. tWH(SCLK) tWL(SCLK) td(SCLK-TxD) tv(SCLK-TxD) tr(SCLK) tf(SCLK) tr(CMOS) tf(CMOS) Serial I/O clock output "H" pulse width Serial I/O clock output "L" pulse width Serial I/O output delay time Serial I/O output valid time Serial I/O clock output rising time Serial I/O clock output falling time CMOS output rising time (Note) CMOS output falling time (Note) -30 30 30 30 30 tC(SCLK)/2-30 tC(SCLK)/2-30 140
Max.
Unit ns ns ns ns ns ns ns ns
Notes: Pins XOUT, D0+, D0-, D1+, D2-, D2+, D2- are excluded.
Table 3.1.12 Switching characteristics (2) (VCC = 3.00 to 4.00 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol tWH(SCLK) tWL(SCLK) td(SCLK-TxD) tv(SCLK-TxD) tr(SCLK) tf(SCLK) tr(CMOS) tf(CMOS) Parameter Serial I/O clock output "H" pulse width Serial I/O clock output "L" pulse width Serial I/O output delay time Serial I/O output valid time Serial I/O clock output rising time Serial I/O clock output falling time CMOS output rising time (Note) CMOS output falling time (Note) -30 50 50 50 50 Limits Min. tC(SCLK)/2-50 tC(SCLK)/2-50 350 Typ. Max. Unit ns ns ns ns ns ns ns ns
Notes: Pins XOUT, D0+, D0-, D1+, D2-, D2+, D2- are excluded.
Measured output pin
100 pF
CMOS output
Fig. 3.1.1 Output switching characteristics measurement circuit
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APPENDIX 38K2 Group 3.1 Electrical characteristics (L.Ver)
Table 3.1.13 Switching characteristics of external bus interface (EXB) (1) (VCC = 4.00 to 5.25 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol ta(R-D) tv(R-D) ta(ACK-D) tv(ACK-D) td(R-Mdis) td(W-Mdis) td(R-Men) td(W-Men) Parameter Data output enable time after read Data output disable time after read Data output enable time after ExDACK Data output disable time after ExDACK In cycle mode Mch_req disable output delay time after read In cycle mode Mch_req disable output delay time after write In cycle mode Mch_req enable output delay time after read In cycle mode Mch_req enable output delay time after write USB function not operating USB function operating USB function not operating USB function operating 0 tC()+10 tC()+10 tC()*3+10 tC()*5+10 tC()*3+10 tC()*5+10 0 80 Limits Min. Typ. Max. 60 Unit ns ns ns ns ns ns ns ns ns ns
Table 3.1.14 Switching characteristics of external bus interface (EXB) (2) (VCC = 3.00 to 4.00 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol ta(R-D) tv(R-D) ta(ACK-D) tv(ACK-D) td(R-Mdis) td(W-Mdis) td(R-Men) td(W-Men) Parameter Data output enable time after read Data output disable time after read Data output enable time after ExDACK Data output disable time after ExDACK In cycle mode Mch_req disable output delay time after read In cycle mode Mch_req disable output delay time after write In cycle mode Mch_req enable output delay time after read In cycle mode Mch_req enable output delay time after write USB function not operating USB function operating USB function not operating USB function operating 0 tC()+30 tC()+30 tC()*3+30 tC()*5+30 tC()*3+30 tC()*5+30 0 120 Limits Min. Typ. Max. 80 Unit ns ns ns ns ns ns ns ns ns ns
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APPENDIX 38K2 Group 3.1 Electrical characteristics (L.Ver)
Table 3.1.15 Switching characteristics (USB ports) (VCC = 3.00 to 5.25 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol tfr(D+/D-) tff(D+/D-) tlr(D+/D-) Parameter USB full-speed output rising time USB full-speed output rising time USB low-speed output rising time CL = 50 pF CL = 50 pF CL = 200 to 600 pF Ta = 0 to 85 C CL = 250 to 600 pF Ta = -20 to 85 C CL = 200 to 600 pF Ta = -20 to 85 C tlf(D+/D-) USB low-speed output falling time CL = 200 to 600 pF Ta = 0 to 85 C CL = 250 to 600 pF Ta = -20 to 85 C CL = 200 to 600 pF Ta = -20 to 85 C tfrfm(D+/D-) tlrfm(D+/D-) Vcrs(D+/D-) USB full-speed ports rising/falling ratio USB low-speed ports rising/falling ratio USB output signal cross-over voltage tfr(D+/D-)/tff(D+/D-) tlr(D+/D-)/tff(D+/D-) 90 80 1.3 111.11 125 2.0 % % V 65 300 ns 75 300 ns 75 300 ns 65 300 ns 75 300 ns Limits Min. 4 4 75 Typ. Max. 20 20 300 Unit ns ns ns
TrON
RL = 27 Measured output pin
RL = 1.5 k RL = 27
RL = 15 k CL
Measured output pin RL = 15 k CL
USB port output
USB port output
Fig. 3.1.2 USB output switching characteristics measurement circuit (1) for D0-, D1+/D2+ (low-speed), D1-/D2- (full-speed)
Fig. 3.1.3 USB output switching characteristics measurement circuit (2) for D0+, D1+/D2+ (full-speed), D1-/D2- (low-speed)
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APPENDIX 38K2 Group 3.1 Electrical characteristics
tC(CNTR) tWH(CNTR) tWL(CNTR) 0.2VCC
CNTR0
0.8VCC
tWH(INT)
tWL(INT) 0.2VCC
INT0/INT1
0.8VCC
tW(RESET)
RESET
0.2VCC
0.8 VCC
tC(XIN) tWH(XIN) tWL(XIN) 0.2VCC
XIN
0.8VCC
[Serial I/O]
tC(SCLK) tf tWL(SCLK) 0.2VCCE tsu(RxD-SCLK) tr 0.8VCCE tWH(SCLK)
SCLK
th(SCLK-RxD)
RxD(at receive)
td(SCLK-TxD)
0.8VCCE 0.2VCCE tv(SCLK-TxD)
TxD (at transmit)
Fig. 3.1.4 Timing chart (1)
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APPENDIX 38K2 Group 3.1 Electrical characteristics
q Timing chart
[ EXB ] < Read >
tsu(A-R)
th(R-A)
ExA0, ExA1
0.8VCC 0.2VCC
tsu(S-R)
th(R-S)
ExCS
0.2VCC
twL(R)
ExRD
0.8VCC 0.2VCC
DQ0 to DQ7
0.8VCC 0.2VCC
ta(R-D) tv(R-D)
0.8VCC 0.2VCC
< Write >
tsu(A-W)
th(W-A)
ExA0, ExA1
0.8VCC 0.2VCC
tsu(S-W)
th(W-S)
ExCS
0.2VCC
twL(W)
ExWR
0.8VCC 0.2VCC
tsu(D-W)
th(W-D)
DQ0 to DQ7
0.8VCC 0.2VCC
0.8VCC 0.2VCC
Fig. 3.1.5 Timing chart (2)
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APPENDIX 38K2 Group 3.1 Electrical characteristics
q Timing chart
[ EXB ] < Read >
tsu(A-R)
th(R-A)
ExA0, ExA1
0.8VCC 0.2VCC
tsu(S-R)
th(R-S)
ExCS
0.2VCC
twL(R)
ExRD
0.8VCC 0.2VCC
DQ0 to DQ7
0.8VCC 0.2VCC
ta(R-D)
0.8VCC 0.2VCC
tv(R-D)
ExINT(Mch_req)
td(R-Mdis) 0.2VCC
td(R-Men) 0.2VCC
< Write >
tsu(A-W)
th(W-A)
ExA0, ExA1
0.8VCC 0.2VCC
tsu(S-W)
th(W-S)
ExCS
0.2VCC
twL(W)
ExWR
0.8VCC 0.2VCC
tsu(D-W)
th(W-D)
DQ0 to DQ7
0.8VCC 0.2VCC
0.8VCC 0.2VCC
td(W-Mdis)
td(W-Men)
ExINT(Mch_req)
Fig. 3.1.6 Timing chart (3)
0.2VCC
0.2VCC
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APPENDIX 38K2 Group 3.1 Electrical characteristics
q Timing chart
[ EXB ] < Read >
tsu(ACK-R) th(R-ACK)
ExDACK
0.2VCC
twL(R)
ExRD
0.8VCC 0.2VCC
DQ0 to DQ7
0.8VCC 0.2VCC
ta(R-D)
0.8VCC 0.2VCC
tv(R-D)
td(R-Mdis)
td(R-Men) 0.2VCC 0.2VCC
ExDREQ(Mch_req)
< Write >
tsu(ACK-W) th(W-ACK)
ExDACK
0.2VCC
twL(W)
ExWR
0.8VCC 0.2VCC
tsu(D-W)
th(W-D)
DQ0 to DQ7
0.8VCC 0.2VCC
0.8VCC 0.2VCC
td(W-Mdis)
td(W-Men) 0.2VCC
ExDREQ(Mch_req)
0.2VCC
Fig. 3.1.7 Timing chart (4)
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APPENDIX 38K2 Group 3.1 Electrical characteristics
q Timing chart
[ EXB ] < Read >
twL(ACK)
ExDACK
0.8VCC 0.2VCC
DQ0 to DQ7
0.8VCC 0.2VCC
ta(ACK-D)
0.8VCC 0.2VCC
tv(ACK-D)
td(ACK-Mdis)
td(ACK-Men) 0.2VCC
ExDREQ(Mch_req)
0.2VCC
< Write > ExDACK
0.8VCC 0.2VCC
twL(ACK)
tsu(D-ACK)
th(ACK-D)
DQ0 to DQ7
0.8VCC 0.2VCC
0.8VCC 0.2VCC
td(ACK-Mdis)
td(ACK-Men) 0.2VCC
ExDREQ(Mch_req)
0.2VCC
Fig. 3.1.8 Timing chart (5)
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APPENDIX 38K2 Group 3.1 Electrical characteristics
q Timing chart
[ EXB ] < Read > ExDACK
twL(R) twH(R)
ExRD
0.8VCC 0.2VCC
tw(cycle)
DQ0 to DQ7
ta(R-D) tv(R-D) td(R-Mdis)
ExDREQ(Mch_req)
0.2VCC
< Write > ExDACK
twL(W) twH(W)
ExWR
0.8VCC 0.2VCC
tw(cycle)
DQ0 to DQ7
tsu(D-W) th(W-D) td(W-Mdis)
ExDREQ(Mch_req)
0.2VCC
Fig. 3.1.9 Timing chart (6)
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APPENDIX 38K2 Group 3.2 Notes on use
3.2 Notes on use
3.2.1 Notes on input and output ports (1) Modifying output data with bit managing instruction When the port latch of an I/O port is modified with the bit managing instruction 1, the value of the unspecified bit may be changed. q Reason The bit managing instructions are read-modify-write form instructions for reading and writing data by a byte unit. Accordingly, when these instructions are executed on a bit of the port latch of an I/O port, the following is executed to all bits of the port latch. *As for bit which is set for input port: The pin state is read in the CPU, and is written to this bit after bit managing. *As for bit which is set for output port: The bit value is read in the CPU, and is written to this bit after bit managing. Note the following: *Even when a port which is set as an output port is changed for an input port, its port latch holds the output data. *As for a bit of which is set for an input port, its value may be changed even when not specified with a bit managing instruction in case where the pin state differs from its port latch contents.
1
Bit managing instructions: SEB and CLB instructions
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APPENDIX 38K2 Group 3.2 Notes on use
3.2.2 Termination of unused pins (1) Terminate unused pins I/O ports : * Set the I/O ports for the input mode and connect them to VCC or VSS through each resistor of 1 k to 10 k. Set the I/O ports for the output mode and open them at "L" or "H". * When opening them in the output mode, the input mode of the initial status remains until the mode of the ports is switched over to the output mode by the program after reset. Thus, the potential at these pins is undefined and the power source current may increase in the input mode. With regard to an effects on the system, thoroughly perform system evaluation on the user side. * Since the direction register setup may be changed because of a program runaway or noise, set direction registers by program periodically to increase the reliability of program. (2) Termination remarks I/O ports : Do not open in the input mode. q Reason * The power source current may increase depending on the first-stage circuit. * An effect due to noise may be easily produced as compared with proper termination shown on the above. I/O ports : When setting for the input mode, do not connect to VCC or VSS directly. q Reason If the direction register setup changes for the output mode because of a program runaway or noise, a short circuit may occur between a port and VCC (or VSS). I/O ports : When setting for the input mode, do not connect multiple ports in a lump to VCC or VSS through a resistor. q Reason If the direction register setup changes for the output mode because of a program runaway or noise, a short circuit may occur between ports. * At the termination of unused pins, perform wiring at the shortest possible distance (20 mm or less) from microcomputer pins.
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APPENDIX 38K2 Group 3.2 Notes on use
3.2.3 Notes on interrupts (1) Change of relevant register settings When the setting of the following registers or bits is changed, the interrupt request bit may be set to "1". When not requiring the interrupt occurrence synchronized with these setting, take the following sequence. *Interrupt edge selection register (address 0FF316) *Timer X mode register (address 2316) Set the above listed registers or bits as the following sequence.
Set the corresponding interrupt enable bit to "0" (disabled) . Set the interrupt edge select bit (active edge switch bit) or the interrupt (source) select bit to "1". NOP (one or more instructions) Set the corresponding interrupt request bit to "0" (no interrupt request issued). Set the corresponding interrupt enable bit to "1" (enabled).
Fig. 3.2.1 Sequence of changing relevant register s Reason When setting the following, the interrupt request bit may be set to "1". *When setting external interrupt active edge Concerned register: Interrupt edge selection register (address 0FF316) Timer X mode register (address 2316)
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APPENDIX 38K2 Group 3.2 Notes on use
(2) Check of interrupt request bit q When executing the BBC or BBS instruction to an interrupt request bit of an interrupt request register immediately after this bit is set to "0" by using a data transfer instruction, execute one or more instructions before executing the BBC or BBS instruction.
Clear the interrupt request bit to "0" (no interrupt issued) NOP (one or more instructions) Execute the BBC or BBS instruction Data transfer instruction: LDM, LDA, STA, STX, and STY instructions Fig. 3.2.2 Sequence of check of interrupt request bit s Reason If the BBC or BBS instruction is executed immediately after an interrupt request bit of an interrupt request register is cleared to "0", the value of the interrupt request bit before being cleared to "0" is read. 3.2.4 Notes on timer q If a value n (between 0 and 255) is written to a timer latch, the frequency division ratio is 1/(n+1). q When switching the count source by the timer 12 and X count source selection bits, the value of timer count is altered in unconsiderable amount owing to generating of thin pulses in the count input signals. Therefore, select the timer count source before set the value to the prescaler and the timer.
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APPENDIX 38K2 Group 3.2 Notes on use
3.2.5 Notes on serial I/O (1) Notes when selecting clock synchronous serial I/O (Serial I/O) Stop of transmission operation Clear the serial I/O enable bit and the transmit enable bit to "0" (Serial I/O and transmit disabled). q Reason Since transmission is not stopped and the transmission circuit is not initialized even if only the serial I/O enable bit is cleared to "0" (Serial I/O disabled), the internal transmission is running (in this case, since pins TxD, RxD, SCLK, and SRDY function as I/O ports, the transmission data is not output). When data is written to the transmit buffer register in this state, data starts to be shifted to the transmit shift register. When the serial I/O enable bit is set to "1" at this time, the data during internally shifting is output to the TxD pin and an operation failure occurs. Stop of receive operation Clear the receive enable bit to "0" (receive disabled), or clear the serial I/O enable bit to "0" (Serial I/O disabled). Stop of transmit/receive operation Clear the transmit enable bit and receive enable bit to "0" simultaneously (transmit and receive disabled). (when data is transmitted and received in the clock synchronous serial I/O mode, any one of data transmission and reception cannot be stopped.) q Reason In the clock synchronous serial I/O mode, the same clock is used for transmission and reception. If any one of transmission and reception is disabled, a bit error occurs because transmission and reception cannot be synchronized. In this mode, the clock circuit of the transmission circuit also operates for data reception. Accordingly, the transmission circuit does not stop by clearing only the transmit enable bit to "0" (transmit disabled). Also, the transmission circuit is not initialized by clearing the serial I/O enable bit to "0" (Serial I/O disabled) (refer to (1) ).
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APPENDIX 38K2 Group 3.2 Notes on use
(2) Notes when selecting clock asynchronous serial I/O (Serial I/O) Stop of transmission operation Clear the transmit enable bit to "0" (transmit disabled). q Reason Since transmission is not stopped and the transmission circuit is not initialized even if only the serial I/O enable bit is cleared to "0" (Serial I/O disabled), the internal transmission is running (in this case, since pins TxD, RxD, SCLK, and SRDY function as I/O ports, the transmission data is not output). When data is written to the transmit buffer register in this state, data starts to be shifted to the transmit shift register. When the serial I/O enable bit is set to "1" at this time, the data during internally shifting is output to the TxD pin and an operation failure occurs. Stop of receive operation Clear the receive enable bit to "0" (receive disabled). Stop of transmit/receive operation Only transmission operation is stopped. Clear the transmit enable bit to "0" (transmit disabled). q Reason Since transmission is not stopped and the transmission circuit is not initialized even if only the serial I/O enable bit is cleared to "0" (Serial I/O disabled), the internal transmission is running (in this case, since pins TxD, RxD, SCLK, and SRDY function as I/O ports, the transmission data is not output). When data is written to the transmit buffer register in this state, data starts to be shifted to the transmit shift register. When the serial I/O enable bit is set to "1" at this time, the data during internally shifting is output to the TxD pin and an operation failure occurs. Only receive operation is stopped. Clear the receive enable bit to "0" (receive disabled). (3) SRDY output of reception side (Serial I/O) When signals are output from the SRDY pin on the reception side by using an external clock in the clock synchronous serial I/O mode, set all of the receive enable bit, the SRDY output enable bit, and the transmit enable bit to "1" (transmit enabled). (4) Setting serial I/O control register again (Serial I/O) Set the serial I/O control register again after the transmission and the reception circuits are reset by clearing both the transmit enable bit and the receive enable bit to "0."
Clear both the transmit enable bit (TE) and the receive enable bit (RE) to "0" Set the bits 0 to 3 and bit 6 of the serial I/O control register Set both the transmit enable bit (TE) and the receive enable bit (RE), or one of them to "1"
Can be set with the LDM instruction at the same time
Fig. 3.2.3 Sequence of setting serial I/O control register again
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APPENDIX 38K2 Group 3.2 Notes on use
(5) Data transmission control with referring to transmit shift register completion flag (Serial I/O) The transmit shift register completion flag changes from "1" to "0" with a delay of 0.5 to 1.5 shift clocks. When data transmission is controlled with referring to the flag after writing the data to the transmit buffer register, note the delay. (6) Transmission control when external clock is selected (Serial I/O) When an external clock is used as the synchronous clock for data transmission, set the transmit enable bit to "1" at "H" of the SCLK input level. Also, write the transmit data to the transmit buffer register (serial I/O shift register) at "H" of the SCLK input level. (7) Transmit interrupt request when transmit enable bit is set (Serial I/O) When the transmit interrupt is used, set the transmit interrupt enable bit to transmit enabled as shown in the following sequence. Set the interrupt enable bit to "0" (disabled) with CLB instruction. Prepare serial I/O for transmission/reception. Set the interrupt request bit to "0" with CLB instruction after 1 or more instruction has been executed. Set the interrupt enable bit to "1" (enabled). q Reason When the transmission enable bit is set to "1", the transmit buffer empty flag and transmit shift register completion flag are set to "1". The interrupt request is generated and the transmission interrupt bit is set regardless of which of the two timings listed below is selected as the timing for the transmission interrupt to be generated. * Transmit buffer empty flag is set to "1" * Transmit shift register completion flag is set to "1" 3.2.6 Notes on USB function (1) Port pins (D0+, D0-, D1+, D1-, D2+, D2-) treatment *The USB specification requires a driver-impedance 28 to 44 . In order to meet the USB specification impedance requirements, connect a resistor (27 W recommended) in series to the USB port pins. In addition, in order to reduce the ringing and control the falling/rising timing and a crossover point, connect a capacitor between the USB port pins and the Vss pin if necessary. The values and structure of those peripheral elements depend on the impedance characteristics and the layout of the printed circuit board. Accordingly, evaluate your system and observe waveforms before actual use and decide use of elements and the values of resistors and capacitors. *Make sure the USB D+/D- lines do not cross any other wires. Keep a large GND area to protect the USB lines. Also, make sure you use a USB specification compliant connecter for the connection. (2) USBVREF pin treatment (Noise Elimination) *Connect a capacitor between the USBVREF pin and the Vss pin. The capacitor should have a 2.2 F capacitor (electrolytic capacitor) and a 0.1 F capacitor (ceramic type capacitor) connected in parallel. *In Vcc = 3.0 to 3.6 V operation, connect the USBVREF pin directly to the Vcc pin in order to supply power to the USB port circuit. In addition, you will need to disable the built-in USB reference voltage circuit in this operation (set bit 4 of the USB control register to "0".) If you are using the bus powered supply in this condition, the DC-DC converter must be placed outside the MCU. *In Vcc = 4.00 to 5.25 V operation, do not connect the external DC-DC converter to the USBVREF pin. Use the built-in USB reference voltage circuit. (3) USB Communication *In applications requiring high-reliability, we recommend providing the system with protective measures such as USB function initialization by software or USB reset by the host to prevent USB communication from being terminated unexpectedly, for example due to external causes such as noise.
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APPENDIX 38K2 Group 3.2 Notes on use
3.2.7 Notes on A/D converter (1) Analog input pin Make the signal source impedance for analog input low, or equip an analog input pin with an external capacitor of 0.01 F to 1 F. Further, be sure to verify the operation of application products on the user side. q Reason An analog input pin includes the capacitor for analog voltage comparison. Accordingly, when signals from signal source with high impedance are input to an analog input pin, charge and discharge noise generates. This may cause the A/D conversion precision to be worse. (2) Clock frequency during A/D conversion The comparator consists of a capacity coupling, and a charge of the capacity will be lost if the clock frequency is too low. Thus, make sure the following during an A/D conversion. * f(XIN) is 500 kHz or more * Do not execute the STP instruction 3.2.8 Notes on watchdog timer qMake sure that the watchdog timer does not underflow while waiting Stop release, because the watchdog timer keeps counting during that term. qWhen the STP instruction disable bit has been set to "1", it is impossible to switch it to "0" by a program
____________
3.2.9 Notes on RESET pin Connecting capacitor In case where the RESET signal rise time is long, connect a ceramic capacitor or others across the RESET pin and the VSS pin. Use a 1000 pF or more capacitor for high frequency use. When connecting the capacitor, note the following : * Make the length of the wiring which is connected to a capacitor as short as possible. * Be sure to verify the operation of application products on the user side. q Reason If the several nanosecond or several ten nanosecond impulse noise enters the RESET pin, it may cause a microcomputer failure. 3.2.10 Notes on PLL q6 MHZ or 12 MHZ external oscillator can be connected as an input reference clock (f(XIN)). When using the frequency synthesized clock function, we recommend using the fastest frequency possible of f(XIN) as an input clock reference for the PLL. qWhen enabling PLL operation from PLL disabled status (disabled when reset), set the USB clock select bit of USBCON to "0" (f(XIN)) to operate with the main clock (f(XIN)). qWhen supplying fVCO to the USB block after setting PLL operation enable bit to "1" (PLL enabled), wait for the oscillation stable time (1 ms or less) of PLL to avoid any instability caused by the clock, then set USB clock select bit to "1" (USB clock). qWhen selecting fSYN as an internal system clock, fUSB must be 48 MHz. qWhen selecting fSYN as an internal system clock, change the system clock selection bit to main clock (f(XIN)) before executing STP instruction. It is because the following are needed for the low-power consumption: *fUSB must be stopped by disabling PLL operation in Stop mode. *The taimer 1 for waiting oscillation stabilization when returning from Stop mode will require the input count source.
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APPENDIX 38K2 Group 3.2 Notes on use
3.2.11 Notes on stand-by function (1) Notes on using stop mode sRegister setting Since values of the prescaler 12 and Timer 1 are automatically reloaded when returning from the stop mode, set them again, respectively. (When the oscillation stabilizing time set after STP instruction released bit is "0") sClock restoration When the main clock side is set as a system clock, the oscillation stabilizing time for approximately 8,000 cycles of the XIN input is reserved at restoration from the stop mode. (2) Notes on stand-by function In stand-by state* 1 for low-power dissipation, do not make input levels of an input port and an I/O port "undefined". Pull-up (connect the port to VCC) these ports through a resistor. When determining a resistance value, note the following points: * External circuit * Variation of output levels during the ordinary operation When using built-in pull-up resistor, note on varied current values. * When setting as an input port: Fix its input level * When setting as an output port: Prevent current from flowing out to external q Reason The potential which is input to the input buffer in a microcomputer is unstable in the state that input levels of an input port and an I/O port are "undefined". This may cause power source current. * 1 stand-by state : the stop mode by executing the STP instruction the wait mode by executing the WIT instruction 3.2.12 Notes on CPU rewrite mode (1) Operation speed During CPU rewrite mode, set the internal clock 1.5 MHz or less using the system clock division ratio selection bits (bits 6 and 7 of address 003B16). (2) Instructions inhibited against use The instructions which refer to the internal data of the flash memory cannot be used during the CPU rewrite mode . (3) Interrupts inhibited against use The interrupts cannot be used during the CPU rewrite mode because they refer to the internal data of the flash memory. (4) Watchdog timer In case of the watchdog timer has been running already, the internal reset generated by watchdog timer underflow does not happen, because of watchdog timer is always clearing during program or erase operation. (5) Reset Reset is always valid. In case of CNVSS = "H" when reset is released, boot mode is active. So the program starts from the address contained in address FFFC16 and FFFD16 in boot ROM area.
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APPENDIX 38K2 Group 3.2 Notes on use
3.2.13 Notes on programming (1) Processor status register Initializing of processor status register Flags which affect program execution must be initialized after a reset. In particular, it is essential to initialize the T and D flags because they have an important effect on calculations. q Reason After a reset, the contents of the processor status register (PS) are undefined except for the I flag which is "1".
Reset Initializing of flags Main program Fig. 3.2.4 Initialization of processor status register How to reference the processor status register To reference the contents of the processor status register (PS), execute the PHP instruction once then read the contents of (S+1). If necessary, execute the PLP instruction to return the PS to its original status. A NOP instruction should be executed after every PLP instruction.
PLP instruction execution NOP
(S) (S)+1 Stored PS
Fig. 3.2.5 Sequence of PLP instruction execution
Fig. 3.2.6 Stack memory contents after PHP instruction execution
(2) BRK instruction Interrupt priority level When the BRK instruction is executed with the following conditions satisfied, the interrupt execution is started from the address of interrupt vector which has the highest priority. * Interrupt request bit and interrupt enable bit are set to "1". * Interrupt disable flag (I) is set to "1" to disable interrupt.
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APPENDIX 38K2 Group 3.2 Notes on use
(3) Decimal calculations Execution of decimal calculations The ADC and SBC are the only instructions which will yield proper decimal notation, set the decimal mode flag (D) to "1" with the SED instruction. After executing the ADC or SBC instruction, execute another instruction before executing the SEC, CLC, or CLD instruction. Notes on status flag in decimal mode When decimal mode is selected, the values of three of the flags in the status register (the N, V, and Z flags) are invalid after a ADC or SBC instruction is executed. The carry flag (C) is set to "1" if a carry is generated as a result of the calculation, or is cleared to "0" if a borrow is generated. To determine whether a calculation has generated a carry, the C flag must be initialized to "0" before each calculation. To check for a borrow, the C flag must be initialized to "1" before each calculation.
Set D flag to "1" ADC or SBC instruction NOP instruction SEC, CLC, or CLD instruction Fig. 3.2.7 Status flag at decimal calculations (4) JMP instruction When using the JMP instruction in indirect addressing mode, do not specify the last address on a page as an indirect address. (5) Multiplication and Division Instructions * The index X mode (T) and the decimal mode (D) flags do not affect the MUL and DIV instruction. * The execution of these instructions does not change the contents of the processor status register. (6) Ports The contents of the port direction registers cannot be read. The following cannot be used: * The data transfer instruction (LDA, etc.) * The operation instruction when the index X mode flag (T) is "1" * The addressing mode which uses the value of a direction register as an index * The bit-test instruction (BBC or BBS, etc.) to a direction register * The read-modify-write instructions (ROR, CLB, or SEB, etc.) to a direction register. Use instructions such as LDM and STA, etc., to set the port direction registers. (7) Instruction Execution Time The instruction execution time is obtained by multiplying the frequency of the internal clock f by the number of cycles needed to execute an instruction. The number of cycles required to execute an instruction is shown in the list of machine instructions. The frequency of the internal clock f is half of the XIN frequency in high-speed mode.
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APPENDIX 38K2 Group 3.2 Notes on use
3.2.14 Notes on flash memory version The CNVss pin is connected to the internal memory circuit block by a low-ohmic resistance, since it has the multiplexed function to be a programmable power source pin (VPP pin) as well. To improve the noise reduction, connect a track between CNVss pin and Vss pin or Vcc pin with 1 to 10 k resistance. The mask ROM version track of CNVss pin has no operational interference even if it is connected to Vss pin or Vcc pin via a resistor. 3.2.15 Electric Characteristic Differences Between Mask ROM and Flash Memory Version MCUs There are differences in electric characteristics, operation margin, noise immunity, and noise radiation between Mask ROM and Flash Memory version MCUs due to the difference in the manufacturing processes. When manufacturing an application system with the Flash Memory version and then switching to use of the Mask ROM version, please perform sufficient evaluations for the commercial samples of the Mask ROM version.
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APPENDIX 38K2 Group 3.3 Countermeasures against noise
3.3 Countermeasures against noise
Countermeasures against noise are described below. The following countermeasures are effective against noise in theory, however, it is necessary not only to take measures as follows but to evaluate before actual use. 3.3.1 Shortest wiring length The wiring on a printed circuit board can function as an antenna which feeds noise into the microcomputer. The shorter the total wiring length (by mm unit), the less the possibility of noise insertion into a microcomputer. (1) Package Select the smallest possible package to make the total wiring length short. q Reason The wiring length depends on a microcomputer package. Use of a small package, for example QFP and not DIP, makes the total wiring length short to reduce influence of noise.
DIP SDIP SOP QFP
Fig. 3.3.1 Selection of packages (2) Wiring for RESET pin Make the length of wiring which is connected to the RESET pin as short as possible. Especially, connect a capacitor across the RESET pin and the VSS pin with the shortest possible wiring (within 20mm). q Reason The width of a pulse input into the RESET pin is determined by the timing necessary conditions. If noise having a shorter pulse width than the standard is input to the RESET pin, the reset is released before the internal state of the microcomputer is completely initialized. This may cause a program runaway.
Noise
Reset circuit VSS
N.G.
RESET VSS
Reset circuit VSS
RESET VSS
O.K.
Fig. 3.3.2 Wiring for the RESET pin
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APPENDIX 38K2 Group 3.3 Countermeasures against noise
(3) Wiring for clock input/output pins * Make the length of wiring which is connected to clock I/O pins as short as possible. * Make the length of wiring (within 20 mm) across the grounding lead of a capacitor which is connected to an oscillator and the VSS pin of a microcomputer as short as possible. * Separate the VSS pattern only for oscillation from other VSS patterns. q Reason If noise enters clock I/O pins, clock waveforms may be deformed. This may cause a program failure or program runaway. Also, if a potential difference is caused by the noise between the VSS level of a microcomputer and the VSS level of an oscillator, the correct clock will not be input in the microcomputer.
Noise
XIN XOUT VSS
N.G.
XIN XOUT VSS
O.K.
Fig. 3.3.3 Wiring for clock I/O pins (4) Wiring to CNVSS pin Connect the CNVSS pin to the VSS pin with the shortest possible wiring. q Reason The processor mode of a microcomputer is influenced by a potential at the CNVSS pin. If a potential difference is caused by the noise between pins CNVSS and VSS, the processor mode may become unstable. This may cause a microcomputer malfunction or a program runaway.
Noise
CNVSS VSS
CNVSS VSS
N.G.
O.K.
Fig. 3.3.4 Wiring for CNVSS pin
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APPENDIX 38K2 Group 3.3 Countermeasures against noise
(5) Wiring to VPP pin of Flash memory version Connect an approximately 5 k resistor to the VPP pin the shortest possible in series and also to the VSS pin. When not connecting the resistor, make the length of wiring between the VPP pin and the VSS pin the shortest possible. Note: Even when a circuit which included an approximately 5 k resistor is used in the Mask ROM version, the microcomputer operates correctly. q Reason The VPP pin of the flash memory version is the power source input pin for the built-in flash memory. When programming in the built-in flash memory, the impedance of the VPP pin is low to allow the electric current for writing flow into the flash memory. Because of this, noise can enter easily. If noise enters the VPP pin, abnormal instruction codes or data are read from the built-in flash memory, which may cause a program runaway.
Approximately 5k CNVSS/VPP VSS
In the shortest distance
Fig. 3.3.5 Wiring for the VPP pin of the flash memory version 3.3.2 Connection of bypass capacitor across VSS line and VCC line Connect an approximately 0.1 F bypass capacitor across the VSS line and the VCC line as follows: * Connect a bypass capacitor across the VSS pin and the VCC pin at equal length. * Connect a bypass capacitor across the VSS pin and the VCC pin with the shortest possible wiring. * Use lines with a larger diameter than other signal lines for VSS line and VCC line. * Connect the power source wiring via a bypass capacitor to the VSS pin and the VCC pin.
VCC
VCC
VSS
VSS
N.G.
O.K.
Fig. 3.3.6 Bypass capacitor across the VSS line and the VCC line
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APPENDIX 38K2 Group 3.3 Countermeasures against noise
3.3.3 Wiring to analog input pins * Connect an approximately 100 to 1 k resistor to an analog signal line which is connected to an analog input pin in series. Besides, connect the resistor to the microcomputer as close as possible. * Connect an approximately 1000 pF capacitor across the VSS pin and the analog input pin. Besides, connect the capacitor to the VSS pin as close as possible. Also, connect the capacitor across the analog input pin and the VSS pin at equal length. q Reason Signals which is input in an analog input pin (such as an A/D converter/comparator input pin) are usually output signals from sensor. The sensor which detects a change of event is installed far from the printed circuit board with a microcomputer, the wiring to an analog input pin is longer necessarily. This long wiring functions as an antenna which feeds noise into the microcomputer, which causes noise to an analog input pin. If a capacitor between an analog input pin and the VSS pin is grounded at a position far away from the VSS pin, noise on the GND line may enter a microcomputer through the capacitor. Noise
(Note)
Microcomputer Analog input pin
N.G. O.K.
Thermistor
VSS
Note : The resistor is used for dividing resistance with a thermistor.
Fig. 3.3.7 Analog signal line and a resistor and a capacitor
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APPENDIX 38K2 Group 3.3 Countermeasures against noise
3.3.4 Oscillator concerns Take care to prevent an oscillator that generates clocks for a microcomputer operation from being affected by other signals. (1) Keeping oscillator away from large current signal lines Install a microcomputer (and especially an oscillator) as far as possible from signal lines where a current larger than the tolerance of current value flows. q Reason In the system using a microcomputer, there are signal lines for controlling motors, LEDs, and thermal heads or others. When a large current flows through those signal lines, strong noise occurs because of mutual inductance.
Microcomputer inductance M Large current GND XIN XOUT VSS
Fig. 3.3.8 Wiring for a large current signal line (2) Installing oscillator away from signal lines where potential levels change frequently Install an oscillator and a connecting pattern of an oscillator away from signal lines where potential levels change frequently. Also, do not cross such signal lines over the clock lines or the signal lines which are sensitive to noise. q Reason Signal lines where potential levels change frequently (such as the CNTR pin signal line) may affect other lines at signal rising edge or falling edge. If such lines cross over a clock line, clock waveforms may be deformed, which causes a microcomputer failure or a program runaway.
N.G.
Do not cross
CNTR XIN XOUT VSS
Fig. 3.3.9 Wiring of RESET pin
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APPENDIX 38K2 Group 3.3 Countermeasures against noise
(3) Oscillator protection using VSS pattern As for a two-sided printed circuit board, print a VSS pattern on the underside (soldering side) of the position (on the component side) where an oscillator is mounted. Connect the VSS pattern to the microcomputer VSS pin with the shortest possible wiring. Besides, separate this VSS pattern from other VSS patterns.
An example of VSS patterns on the underside of a printed circuit board Oscillator wiring pattern example
XIN XOUT VSS
Separate the VSS line for oscillation from other VSS lines
Fig. 3.3.10 VSS pattern on the underside of an oscillator 3.3.5 Setup for I/O ports Setup I/O ports using hardware and software as follows: * Connect a resistor of 100 or more to an I/O port in series. * As for an input port, read data several times by a program for checking whether input levels are equal or not. * As for an output port, since the output data may reverse because of noise, rewrite data to its port latch at fixed periods. * Rewrite data to direction registers at fixed periods. Note: When a direction register is set for input port again at fixed periods, a several-nanosecond short pulse may be output from this port. If this is undesirable, connect a capacitor to this port to remove the noise pulse.
Noise
O.K.
Data bus
Direction register N.G. Port latch I/O port pins Noise
Fig. 3.3.11 Setup for I/O ports
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APPENDIX 38K2 Group 3.3 Countermeasures against noise
3.3.6 Providing of watchdog timer function by software If a microcomputer runs away because of noise or others, it can be detected by a software watchdog timer and the microcomputer can be reset to normal operation. This is equal to or more effective than program runaway detection by a hardware watchdog timer. The following shows an example of a watchdog timer provided by software. In the following example, to reset a microcomputer to normal operation, the main routine detects errors of the interrupt processing routine and the interrupt processing routine detects errors of the main routine. This example assumes that interrupt processing is repeated multiple times in a single main routine processing. * Assigns a single byte of RAM to a software watchdog timer (SWDT) and writes the initial value N in the SWDT once at each execution of the main routine. The initial value N should satisfy the following condition: N+1 ( Counts of interrupt processing executed in each main routine) As the main routine execution cycle may change because of an interrupt processing or others, the initial value N should have a margin. * Watches the operation of the interrupt processing routine by comparing the SWDT contents with counts of interrupt processing after the initial value N has been set. * Detects that the interrupt processing routine has failed and determines to branch to the program initialization routine for recovery processing in the following case: If the SWDT contents do not change after interrupt processing. * Decrements the SWDT contents by 1 at each interrupt processing. * Determines that the main routine operates normally when the SWDT contents are reset to the initial value N at almost fixed cycles (at the fixed interrupt processing count). * Detects that the main routine has failed and determines to branch to the program initialization routine for recovery processing in the following case: If the SWDT contents are not initialized to the initial value N but continued to decrement and if they reach 0 or less.
Main routine (SWDT) N CLI Main processing N (SWDT) =N? N
Interrupt processing routine (SWDT) (SWDT)--1 Interrupt processing >0 RTI Return Main routine errors
(SWDT) 0? 0
Interrupt processing routine errors
Fig. 3.3.12 Watchdog timer by software
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APPENDIX 38K2 Group 3.4 List of registers
3.4 List of registers
Port Pi
b7 b6 b5 b4 b3 b2 b1 b0 Port Pi (Pi) (i = 0, 1, 2, 3, 4, 5, 6) (Note) [Address : 0016, 0216, 0416, 0616, 0816, 0A16, 0C16]
B 0 Port Pi0 1 Port Pi1
Name
q
Function
In output mode Write Port latch Read In input mode Write : Port latch Read : Value of pins
At reset
RW
? ? ? ? ? ? ? ?
q
2 Port Pi2 3 Port Pi3 4 Port Pi4 5 Port Pi5 6 Port Pi6 7 Port Pi7
Note: Since the following ports are not allocated, the corrrsponding bits can not be used. * P20 to P23 * P44 to P47 * P64 to P67
Fig. 3.4.1 Structure of Port Pi
Port Pi direction register
b7 b6 b5 b4 b3 b2 b1 b0 Port Pi direction register (PiD) (i = 0, 1, 2, 3, 4, 5, 6) (Note) [Address : 0116, 0316, 0516, 0716, 0916, 0B16, 0D16]
B
Name
Function
0 : Port Pi0 input mode 1 : Port Pi0 output mode 0 : Port Pi1 input mode 1 : Port Pi1 output mode 0 : Port Pi2 input mode 1 : Port Pi2 output mode 0 : Port Pi3 input mode 1 : Port Pi3 output mode 0 : Port Pi4 input mode 1 : Port Pi4 output mode 0 : Port Pi5 input mode 1 : Port Pi5 output mode 0 : Port Pi6 input mode 1 : Port Pi6 output mode 0 : Port Pi7 input mode 1 : Port Pi7 output mode
At reset
RW

0 Port Pi direction register 1 2 3 4 5 6 7
0 0 0 0 0 0 0 0
Note: Since the following ports are not allocated, the corrrsponding bits can not be used. * P20 to P23 * P44 to P47 * P64 to P67 Do not set bits of the direction register corresponding to ports P20-P23 (bits 0-3 of port P2 direction register (address 0516)) to output mode ("1"). If writing to these bits, write "0".
Fig. 3.4.2 Structure of Port Pi direction register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
USB control register (USBCON) [address 001016]
Bit symbol WKUP
TRONCON TRONE VREFCON VREFE USBDIFE UCLKCON USBE
At reset RW H/W S/W 0 : Returning to BUS idle state by writing "1" first and 0 Remote wakeup bit - OO then "0". (Remote wakeup signal) 1 : K-state output 0 : "L" output mode (valid in TRONE = "1") TrON output control bit 0 - OO 1 : "H" output mode (valid in TRONE = "1") 0 : TrON port output disabled (Hi-Z state) TrON output enable bit 0 - OO 1 : TrON port output enabled USB reference voltage control bit 0 : Normal mode (valid in VREFE = "1") 0 - OO 1 : Low current mode (valid in VREFE = "1") USB reference voltage enable bit 0 : USB reference voltage circuit operation disabled 0 - OO 1 : USB reference voltage circuit operation enabled USB difference input enable bit 0 : Upstream-port difference input circuit operation disabled 0 - OO 1 : Upstream--port difference input circuit operation enabled 0 : External oscillating clock f(XIN) USB clock select bit 0 - OO 1 : PLL circuit output clock fVCO USB module operation enable bit 0 : USB module reset 0 - OO 1 : USB module operation enabled Bit name Function -: State remaining
Fig. 3.4.3 Structure of USB control register
b7
b0
0
00
000
USB function/HUB enable register (USBAE) [address 001116]
Bit symbol AD0E AD1E b7:b2
Bit name USB function enable bit USB HUB enable bit Not used
Function 0: USB function address register invalidated 1: USB function address register validated 0: USB HUB address register invalidated 1: USB HUB address register validated Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO 0 - - - OO OO
-: State remaining
Fig. 3.4.4 Structure of USB function/HUB enable register
b7
b0
0
USB function address register (USBA0) [address 001216]
Bit symbol USBADD0 [6:0] b7
Bit name USB function address bit
Function In AD0E = "0", this value changes after writing. In AD0E = "1", this value changes after completion of SET_ADDRESS control transferring. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 OO
Not used
-
-
OO
-: State remaining
Fig. 3.4.5 Structure of USB function address register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
USB HUB address register (USBA1) [address 001316]
Bit symbol USBADD1 [6:0] b7
Bit name USB HUB address bit
Function In AD1E = "0", this value changes after writing. In AD1E = "1", this value changes after completion of SET_ADDRESS control transferring. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 OO
Not used
-
-
OO
-: State remaining
Fig. 3.4.6 Structure of USB HUB address register
b7
b0
Frame number register Low (FNUML) [address 001416]
Bit symbol FNUM [7:0]
Bit name Frame number low bit
Function The frame number is updated at SOF reception.
At reset RW H/W S/W InIn- O
definite definite
Fig. 3.4.7 Structure of Frame number register Low
b7
b0
0
00
00
Frame number register High (FNUMH) [address 001516]
Bit symbol FNUM [10:8] b7:b3
Bit name Frame number high bit Not used
Function The frame number is updated at SOF reception. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W InIn- O
definite definite - -
OO
-: State remaining
Fig. 3.4.8 Structure of Frame number register High
b7
b0
USB interrupt source enable register (USBICON) [address 001616]
Bit symbol EP00E EP01E EP02E EP03E EP10E EP11E SUSE RSME
Bit name USB function/Endpoint 0 interrupt enable bit USB function/Endpoint 1 interrupt enable bit USB function/Endpoint 2 interrupt enable bit USB function/Endpoint 3 interrupt enable bit USB HUB/Endpoint 0 interrupt enable bit USB HUB/Endpoint 1 interrupt enable bit Suspend interrupt enable bit Resume interrupt enable bit 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled
Function
At reset RW H/W S/W 0 0 OO 0 0 0 0 0 0 0 0 0 0 0 0 0 0 OO OO OO OO OO OO OO
Fig. 3.4.9 Structure of USB interrupt source enable register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
USB interrupt source register (USBIREQ) [address 001716]
Bit symbol EP00
Bit name USB function/Endpoint 0 interrupt bit
EP01
USB function/Endpoint 1 interrupt bit
EP02
USB function/Endpoint 2 interrupt bit
EP03
USB function/Endpoint 3 interrupt bit
EP10
USB HUB/Endpoint 0 interrupt bit
EP11
USB HUB/Endpoint 1 interrupt bit
SUS
Suspend interrupt bit
RSM
Resume interrupt bit
At reset RW H/W S/W This bit is set to "1" when any one of EP00 interrupt 0 0 O source register's bits at least is set to "1". This bit is cleared to "0" by clearing EP00 interrupt source register to "0016". Writing to this bit causes no state change. This bit is set to "1" when any one of EP01 interrupt 0 0 O source register's bits at least is set to "1". This bit is cleared to "0" by clearing EP01 interrupt source register to "0016". Writing to this bit causes no state change. This bit is set to "1" when any one of EP02 interrupt 0 0 O source register's bits at least is set to "1". This bit is cleared to "0" by clearing EP02 interrupt source register to "0016". Writing to this bit causes no state change. This bit is set to "1" when any one of EP03 interrupt 0 0 O source register's bits at least is set to "1". This bit is cleared to "0" by clearing EP03 interrupt source register to "0016". Writing to this bit causes no state change. This bit is set to "1" when any one of EP10 interrupt 0 0 O source register's bits at least is set to "1". This bit is cleared to "0" by clearing EP10 interrupt source register to "0016". Writing to this bit causes no state change. This bit is set to "1" when any one of EP11 interrupt 0 0 O source register's bits at least is set to "1". This bit is cleared to "0" by clearing EP11 interrupt source register to "0016". Writing to this bit causes no state change. 0 : No interrupt request issued 0 0 OO 1 : Interrupt request issued This bit is set to "1" when detecting 3 ms or more of Jstate, using USB clock (fUSB) at 48 MHz. "0" can be set by software, but "1" cannot be set. This bit is set to "1" when the USB bus state changes 0 0 O from J-state to K-state or SE0 in the resume interrupt enable bit = "1". It is also "1" in the condition of internal clock stopped. This bit is cleared to "0" by clearing the resume interrupt enable bit. Writing to this bit causes no state change. Function
Fig. 3.4.10 Structure of USB interrupt source register
b7
b0
0
00
00
Endpoint index register (USBINDEX) [address 001816]
Bit symbol
Bit name
Function b1 b0 0 0 : Endpoint 0 0 1 : Endpoint 1 1 0 : Endpoint 2 1 1 : Endpoint 3 0 : USB function 1 : USB HUB Write "0" when writing. "0" is read when reading.
EPIDX [1:0] Endpoint index bit
At reset RW H/W S/W 0 - OO
ADIDX b7:b3
Address index bit Not used
0 -
- -
OO OO
-: State remaining
Fig. 3.4.11 Structure of Endpoint index register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
0
0
00
00
EP00 stage register (EP00STG) [address 001916]
Bit symbol SETUP00
Bit name SETUP packet detection bit
Function This bit is set to "1" at reception of SETUP packet. Writing "0" to this bit clears this bit if the next SETUP token does not occur. Writing "1" to this bit causes no state change of the status flags. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 1 1 OO
b7:b1
Not used
-
-
OO
-: State remaining
Fig. 3.4.12 Structure of EP00 stage register
b7
b0
EP01 set register (EP01CFG) [address 001916]
Bit symbol BSIZ01 [1:0]
DBLB01 SQCL01
ITMD01 DIR01 TYP01 [1:0]
At reset RW H/W S/W Double buffer beginning address set In double buffer mode set the beginning address of 0 - OO buffer 1 area, using a relative value for the beginning bit address of buffer 0. b1b0 0 0 = 8 bytes 0 1 = 16 bytes 1 0 = 64 bytes 1 1 = 128 bytes 0 : Single buffer mode Buffer mode select bit 0 - OO 1 : Double buffer mode 0 : Toggle bit clear disabled Sequence toggle bit clear bit 0 - OO 1 : Writing "1" clears the toggle bit and DATA0 is used as the next data PID. "0" is always read when reading. Interrupt toggle mode select bit 0 : Normal mode 0 - OO 1 : Continuous toggle mode (valid at Interrupt IN transfer) 0 : OUT (Data is received from the host.) Transfer direction bit 0 - OO 1 : IN (Data is transmitted to the host.) b7b6 Transfer type bite 0 - OO 0 0 : Transfer disabled 0 1 : Bulk transfer 1 0 : Interrupt transfer 1 1 : Isochronous transfer Bit name Function -: State remaining
Fig. 3.4.13 Structure of EP01 set register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
EP02 set register (EP02CFG) [address 001916]
Bit symbol BSIZ02 [1:0]
DBLB02 SQCL02
ITMD02 DIR02 TYP02 [1:0]
At reset RW H/W S/W Double buffer beginning address set In double buffer mode set the beginning address of buffer 1 0 - OO area, using a relative value for the beginning address of bit buffer 0. b1b0 0 0 = 8 bytes 0 1 = 16 bytes 1 0 = 64 bytes 1 1 = 128 bytes 0 : Single buffer mode Buffer mode select bit 0 - OO 1 : Double buffer mode 0 : Toggle bit clear disabled Sequence toggle bit clear bit 0 - OO 1 : Writing "1" clears the toggle bit and DATA0 is used as the next data PID. "0" is always read when reading. Interrupt toggle mode select bit 0 : Normal mode 0 - OO 1 : Continuous toggle mode (valid at Interrupt IN transfer) 0 : OUT (Data is received from the host.) Transfer direction bit 0 - OO 1 : IN (Data is transmitted to the host.) b7b6 Transfer type bite 0 - OO 0 0 : Transfer disabled 0 1 : Bulk transfer 1 0 : Interrupt transfer 1 1 : Isochronous transfer Bit name Function -: State remaining
Fig. 3.4.14 Structure of EP02 set register
b7
b0
EP03 set register (EP03CFG) [address 001916]
Bit symbol BSIZ03 [1:0]
DBLB03 SQCL03
ITMD03 DIR03 TYP03 [1:0]
At reset RW H/W S/W Double buffer beginning address set In double buffer mode set the beginning address of buffer 1 0 - OO area, using a relative value for the beginning address of bit buffer 0. b1b0 0 0 = 8 bytes 0 1 = 16 bytes 1 0 = 64 bytes 1 1 = 128 bytes 0 : Single buffer mode Buffer mode select bit 0 - OO 1 : Double buffer mode 0 : Toggle bit clear disabled Sequence toggle bit clear bit 0 - OO 1 : Writing "1" clears the toggle bit and DATA0 is used as the next data PID. "0" is always read when reading. Interrupt toggle mode select bit 0 : Normal mode 0 - OO 1 : Continuous toggle mode (valid at Interrupt IN transfer) 0 : OUT (Data is received from the host.) Transfer direction bit 0 - OO 1 : IN (Data is transmitted to the host.) b7b6 Transfer type bit 0 - OO 0 0 : Transfer disabled 0 1 : Bulk transfer 1 0 : Interrupt transfer 1 1 : Isochronous transfer Bit name Function -: State remaining
Fig. 3.4.15 Structure of EP03 set register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
0
0
00
00
EP10 stage register (EP10STG) [address 001916]
Bit symbol SETUP10
Bit name SETUP packet detection bit
Function This bit is set to "1" at reception of SETUP packet. Writing "0" clears this bit if the next SETUP token does not occur. Writing "1" causes no state change of the status flags. This bit change is not for an interrupt source. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 1 1 OO
b7:b1
Not used
-
-
OO
-: State remaining
Fig. 3.4.16 Structure of EP10 stage register
b7
b0
0
0
0
0
0 EP11 set register (EP11CFG) [address 001916]
Bit symbol b2:b0 SQCL11 Not used
Bit name
Function Write "0" when writing. "0" is read when reading. 0 : Toggle bit clear disabled 1 : Writing "1" clears the toggle bit and DATA0 is used as the next data PID. "0" is always read when reading. Write "0" when writing. "0" is read when reading. 0 : IN transfer disabled 1 : IN (Data is transmitted to the host.) Write "0" when writing. "0" is read when reading. 0 : Transfer disabled 1 : Interrupt transfer
At reset RW H/W S/W - - OO 0 -
Sequence toggle bit clear bit
b4 DIR11 b6 TYP11
Not used Transfer direction bit Not used Transfer type bite
- 0 - 0
- - - -
OO OO OO OO
-: State remaining
Fig. 3.4.17 Structure of EP11 set register
b7
b0
0
0
0
00
0
EP00 control register 1 (EP00CON1) [address 001A16]
Bit symbol PID00 [1:0]
Bit name Response PID bit
Function b1 b0 0 0 : NAK 0 1 : Automatic response (ACK, NAK, DATA0, DATA1) 1 X : STALL At occurrence of control transfer error: B1 is set to "1" by the hardware. At reception of SETUP token: B1 and b0 are cleared to "0" by the hardware. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b2
Not used
-
-
OO
-: State remaining
Fig. 3.4.18 Structure of EP00 control register 1
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
000
0
0
0
EP01 control register 1 (EP01CON1) [address 001A16]
Bit symbol PID01 [1:0]
Bit name Response PID bit
Function b1 b0 0 0 : NAK 0 1 : Automatic response (ACK, NAK, DATA0, DATA1) 1 X : STALL At occurrence of over-max. packet size : B1 is set to "1" by the hardware. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b2
Not used
-
-
OO
-: State remaining
Fig. 3.4.19 Structure of EP01 control register 1
b7
b0
00
0
0
00
EP02 control register 1 (EP02CON1) [address 001A16]
Bit symbol PID02 [1: 0]
Bit name Response PID bit
Function b1 b0 0 0 : NAK 0 1 : Automatic response (ACK, NAK, DATA0, DATA1) 1 X : STALL At occurrence of over-max. packet size : B1 is set to "1" by the hardware. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b2
Not used
-
-
OO
-: State remaining
Fig. 3.4.20 Structure of EP02 control register 1
b7
b0
000
0
0
0
EP03 control register 1 (EP03CON1) [address 001A16]
Bit symbol PID03 [1:0]
Bit name Response PID bit
Function b1 b0 0 0 : NAK 0 1 : Automatic response (ACK, NAK, DATA0, DATA1) 1 X : STALL At occurrence of over-max. packet size : B1 is set to "1" by the hardware. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b2
Not used
-
-
OO
-: State remaining
Fig. 3.4.21 Structure of EP03 control register 1
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
0
0
00
0
EP10 control register 1 (EP10CON1) [address 001A16]
Bit symbol PID10 [1:0]
Bit name Response PID bit
Function b1 b0 0 0 : NAK 0 1 : Automatic response (ACK, NAK, DATA0, DATA1) 1 X : STALL At occurrence of control transfer error: B1 is set to "1" by the hardware. At reception of SETUP token: B1 and b0 are cleared to "0" by the hardware. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b2
Not used
-
-
OO
-: State remaining
Fig. 3.4.22 Structure of EP10 control register 1
b7
b0
000
0
0
0
EP11 control register 1 (EP11CON1) [address 001A16]
Bit symbol PID11 [1:0]
Bit name Response PID bit
Function b1 b0 0 0 : NAK 0 1 : Automatic response (NAK, DATA0, DATA1) 1 X : STALL Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b2
Not used
-
-
OO
-: State remaining
Fig. 3.4.23 Structure of EP11 control register 1
b7
b0
0
0
00
00
0
EP00 control register 2 (EP00CON2) [address 001B16]
Bit symbol BVAL00
Bit name Buffer enable bit
Function 0 : NAK transmission (SIE is disabled to read a buffer.) 1 : Transmitting/receiving data set state (SIE is possible to read from/write to a buffer.) At reception of SETUP token: This bit is cleared to "0" by the hardware. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b1
Not used
-
-
OO
-: State remaining
Fig. 3.4.24 Structure of EP00 control register 2
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
0
00
0
0
0
EP01 control register 2 (EP01CON2) [address 001B16]
Bit symbol B0VAL01
Bit name Buffer 0 enable bit
b7:b1
Not used
At reset RW H/W S/W 0 - OO When the selected endpoint is IN, writing "1" to this bit makes the transmitting data a set state (SIE is possible to read). When the selected endpoint is OUT, writing "1" to this bit makes data reception possible (SIE is possible to write). - - OO Write "0" when writing. "0" is read when reading. Function -: State remaining
Fig. 3.4.25 Structure of EP01 control register 2
b7
b0
0
0
0
00
0
0
EP02 control register 2 (EP02CON2) [address 001B16]
Bit symbol B0VAL02
Bit name Buffer 0 enable bit
b7:b1
Not used
At reset RW H/W S/W - OO When the selected endpoint is IN, writing "1" to this bit 0 makes the transmitting data a set state (SIE is possible to read). When the selected endpoint is OUT, writing "1" to this bit makes data reception possible (SIE is possible to write). - - OO Write "0" when writing. Function "0" is read when reading. -: State remaining
Fig. 3.4.26 Structure of EP02 control register 2
b7
b0
0
0
0
00
0
0
EP03 control register 2 (EP03CON2) [address 001B16]
Bit symbol B0VAL03
Bit name Buffer 0 enable bit
b7:b1
Not used
At reset RW H/W S/W - OO When the selected endpoint is IN, writing "1" to this bit 0 makes the transmitting data a set state (SIE is possible to read). When the selected endpoint is OUT, writing "1" to this bit makes data reception possible (SIE is possible to write). - - OO Write "0" when writing. Function "0" is read when reading. -: State remaining
Fig. 3.4.27 Structure of EP03 control register 2
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
0
00
00
0
EP10 control register 2 (EP10CON2) [address 001B16]
Bit symbol BVAL10
Bit name Buffer enable bit
Function 0 : NAK transmission (SIE is disabled to read a buffer.) 1 : Transmitting/receiving data set state (SIE is possible to read from/write to a buffer.) (Valid in PID10 = "012") At reception of SETUP token: This bit is cleared to "0" by the hardware. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b1
Not used
-
-
OO
-: State remaining
Fig. 3.4.28 Structure of EP10 control register 2
b7
b0
0
0
0
00
0
0
EP11 control register 2 (EP11CON2) [address 001B16]
Bit symbol B0VAL11 b7:b1
Bit name Buffer 0 status bit Not used
At reset RW H/W S/W - OO This bit set to "1" shows the transmitting data is in a set 0 state (SIE is possible to read). - - OO Write "0" when writing. "0" is read when reading. Function -: State remaining
Fig. 3.4.29 Structure of EP11 control register 2
b7
b0
0
0
00
00
0
EP00 control register 3 (EP00CON3) [address 001C16]
Bit symbol
Bit name
Function 0 : NAK transmission in the status stage 1 : Control transfer completion enabled (SIE transmits NULL/ACK.) (valid in PID00 = "012") At reception of SETUP token: This bit is cleared to "0" by the hardware. Write "0" when writing. "0" is read when reading.
CTENDE00 Control transfer completion enable bit
At reset RW H/W S/W 0 - OO
b7:b1
Not used
-
-
OO
-: State remaining
Fig. 3.4.30 Structure of EP00 control register 3
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0000
000
EP01 control register 3 (EP01CON3) [address 001C16]
Bit symbol B1VAL01
Bit name Buffer 1 enable bit
b7:b1
Not used
At reset RW H/W S/W - OO When the selected endpoint is IN, writing "1" to this bit 0 makes the transmitting data a set state (SIE is possible to read). When the selected endpoint is OUT, writing "1" to this bit makes data reception possible (SIE is possible to write). In double buffer mode this bit is valid. - - OO Write "0" when writing. "0" is read when reading. Function -: State remaining
Fig. 3.4.31 Structure of EP01 control register 3
b7
b0
0
0
0
00
0
0
EP02 control register 3 (EP02CON3) [address 001C16]
Bit symbol B1VAL02
Bit name Buffer 1 enable bit
b7:b1
Not used
At reset RW H/W S/W - OO When the selected endpoint is IN, writing "1" to this bit 0 makes the transmitting data a set state (SIE is possible to read). When the selected endpoint is OUT, writing "1" to this bit makes data reception possible (SIE is possible to write). In double buffer mode this bit is valid. - - OO Write "0" when writing. Function "0" is read when reading. -: State remaining
Fig. 3.4.32 Structure of EP02 control register 3
b7
b0
0000
000
EP03 control register 3 (EP03CON3) [address 001C16]
Bit symbol B1VAL03
Bit name Buffer 1 enable bit
b7:b1
Not used
At reset RW H/W S/W - OO When the selected endpoint is IN, writing "1" to this bit 0 makes the transmitting data a set state (SIE is possible to read). When the selected endpoint is OUT, writing "1" to this bit makes data reception possible (SIE is possible to write). In double buffer mode this bit is valid. - - OO Write "0" when writing. Function "0" is read when reading. -: State remaining
Fig. 3.4.33 Structure of EP03 control register 3
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
0
00
00
0
EP10 control register 3 (EP10CON3) [address 001C16]
Bit symbol
Bit name
Function 0 : NAK transmission in the status stage 1 : Control transfer completion enabled (SIE transmits NULL/ACK.) (Valid in PID10 = "012") At reception of SETUP token: This bit is cleared to "0" by the hardware. Write "0" when writing. "0" is read when reading.
CTENDE10 Control transfer completion enable bit
At reset RW H/W S/W 0 - OO
b7:b1
Not used
-
-
OO
-: State remaining
Fig. 3.4.34 Structure of EP10 control register 3
b7
b0
000
EP00 interrupt source register (EP00REQ) [address 001D16]
Bit symbol BRDY00
Bit name USB function/Endpoint 0 buffer ready interrupt bit
Function
CTEND00
CTSTS00
BSRDY00
ERR00
b7:b5
0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when the buffer is ready state (enabled to be read/written) on USB function/Endpoint 0. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 0 control 0: No interrupt request issued transfer completion interrupt bit 1: Interrupt request issued This bit is set to "1" when control transfer is completed (NULL/ACK transmission in the status stage) on USB function/Endpoint 0. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 0 status 0: No interrupt request issued 1: Interrupt request issued stage transition interrupt bit This bit is set to "1" when transition to status stage occurs in CTENDE00 = "0" (control transfer completion disabled) on USB function/Endpoint 0. "0" can be set by software, but "1" cannot be set. At transfer of control write: When receiving IN-token in data stage (OUT) At transfer of control read: When receiving OUT-token in data stage (IN) At no data transfer: Nothing occurs. USB function/Endpoint 0 SETUP 0: No interrupt request issued 1: Interrupt request issued buffer ready interrupt bit This bit is set to "1" when the exclusive buffer for SETUP is ready state (enabled to be read) on USB function/Endpoint 0. "0" can be set by software, but "1" cannot be set. 0: No interrupt request issued USB function/Endpoint 0 error 1: Interrupt request issued interrupt bit This bit is set to "1" when control transfer error occurs on USB function/Endpoint 0. This bit is cleared to "0" by the hardware when receiving SETUP token. "0" can be set by software, but "1" cannot be set. Write "0" when writing. Not used "0" is read when reading.
At reset RW H/W S/W 0 0 OO
0
0
OO
0
0
OO
0
0
OO
0
0
OO
-
-
OO
-: State remaining
Fig. 3.4.35 Structure of EP00 interrupt source register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0000
0
EP01 interrupt source register (EP01REQ) [address 001D16]
Bit symbol B0RDY01
Bit name
Function
B1RDY01
ERR01
b7:b3
USB function/Endpoint 1 buffer 0 0: No interrupt request issued ready interrupt bit 1: Interrupt request issued This bit is set to "1" when the buffer 0 is ready state (enabled to be read/written) on USB function/Endpoint 1. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 1 buffer 1 0: No interrupt request issued ready interrupt bit 1: Interrupt request issued In single buffer mode this bit is invalid. This bit is set to "1" when the buffer 1 is ready state (enabled to be read/written) on USB function/Endpoint 1 in double buffer mode. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 1 error 0: No interrupt request issued interrupt bit 1: Interrupt request issued This bit is set to "1" when STALL response occurs on USB function/Endpoint 1. "0" can be set by software, but "1" cannot be set. Not used Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 OO
0
0
OO
0
0
OO
-
-
OO
Fig. 3.4.36 Structure of EP01 interrupt source register
b7
b0
0
0
0
0
0
EP02 interrupt source register (EP02REQ) [address 001D16]
Bit symbol B0RDY02
Bit name
Function
B1RDY02
ERR02
b7 to b3
USB function/Endpoint 2 buffer 0 0 : No interrupt request issued ready interrupt bit 1 : Interrupt request issued This bit is set to "1" when the buffer 0 is ready state (enabled to be read/written) on USB function/Endpoint 2. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 2 buffer 1 0 : No interrupt request issued ready interrupt bit 1 : Interrupt request issued In single buffer mode this bit is invalid. This bit is set to "1" when the buffer 1 is ready state (enabled to be read/written) on USB function/Endpoint 2 in double buffer mode. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 2 error 0 : No interrupt request issued interrupt bit 1 : Interrupt request issued This bit is set to "1" when STALL response occurs on USB function/Endpoint 2. "0" can be set by software, but "1" cannot be set. Not used Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 OO
0
0
OO
0
0
OO
-
-
OO
Fig. 3.4.37 Structure of EP02 interrupt source register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0000
0
EP03 interrupt source register (EP03REQ) [address 001D16]
Bit symbol B0RDY03
Bit name
Function
B1RDY03
ERR03
b7:b3
USB function/Endpoint 3 buffer 0 0 : No interrupt request issued ready interrupt bit 1 : Interrupt request issued This bit is set to "1" when the buffer 0 is ready state (enabled to be read/written) on USB function/Endpoint 3. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 3 buffer 1 0 : No interrupt request issued ready interrupt bit 1 : Interrupt request issued In single buffer mode this bit is invalid. This bit is set to "1" when the buffer 1 is ready state (enabled to be read/written) on USB function/Endpoint 3 in double buffer mode. "0" can be set by software, but "1" cannot be set. USB function/Endpoint 3 error 0 : No interrupt request issued interrupt bit 1 : Interrupt request issued This bit is set to "1" when STALL response occurs on USB function/Endpoint 3. "0" can be set by software, but "1" cannot be set. Not used Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 OO
0
0
OO
0
0
OO
-
-
OO
Fig. 3.4.38 Structure of EP03 interrupt source register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
000
EP10 interrupt source register (EP10REQ) [address 001D16]
Bit symbol BRDY10
Bit name USB HUB/Endpoint 10 buffer ready interrupt bit
Function 0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when the buffer is ready state (enabled to be read/written) on USB HUB/Endpoint 10. "0" can be set by software, but "1" cannot be set. 0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when control transfer is completed (NULL/ACK transmission in the status stage) on USB HUB/Endpoint 10. "0" can be set by software, but "1" cannot be set. 0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when transition to status stage occurs in CTENDE10 = "0" (control transfer completion disabled) on USB HUB/Endpoint 10. "0" can be set by software, but "1" cannot be set. At transfer of control write: When receiving IN-token in data stage (OUT) At transfer of control read: When receiving OUT-token in data stage (IN) At no data transfer: Nothing occurs. 0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when the exclusive buffer for SETUP is ready state (enabled to be read) on USB HUB/Endpoint 10. "0" can be set by software, but "1" cannot be set. 0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when control transfer error occurs on USB HUB/Endpoint 10. This bit is cleared to "0" by the hardware when receiving SETUP token. "0" can be set by software, but "1" cannot be set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 OO
CTEND10
USB HUB/Endpoint 10 control transfer completion interrupt bit
0
0
OO
CTSTS10
USB HUB/Endpoint 10 status stage transition interrupt bit
0
0
OO
BSRDY10
USB HUB/Endpoint 10 SETUP buffer ready interrupt bit
0
0
OO
ERR10
USB HUB/Endpoint 10 error interrupt bit
0
0
OO
b7:b5
Not used
-
-
OO
-: State remaining
Fig. 3.4.39 Structure of EP10 interrupt source register
b7
b0
000
0000
EP11 interrupt source register (EP11REQ) [address 001D16]
Bit symbol B0RDY11
Bit name USB HUB/Endpoint 1 buffer 0 ready interrupt bit
Function 0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when the buffer is ready state (enabled to be read/written) on USB HUB/Endpoint 1. "0" can be set by software, but "1" cannot be set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 OO
b7:b1
Not used
-
-
OO
-: State remaining
Fig. 3.4.40 Structure of EP11 interrupt source register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
00
0
EP00 byte number register (EP00BYT) [address 001E16]
Bit symbol BBYT00 [3:0] b7:b4
Bit name
Function
Transmit/receive byte number bit OUT : The received byte number is automatically set. IN : Set the transmitting byte number. Write 0 when writing. Not used 0 is read when reading.
At reset RW H/W S/W 0 -- OO -- -- OO
--: State remaining
Fig. 3.4.41 Structure of EP00 byte number register
b7
b0
0
EP01 byte number register 0 (EP01BYT0) [address 001E16]
Bit symbol B0BYT01 [6:0]
Bit name IN : Transmit byte number bit
Function Single buffer mode: Set the transmitting byte number. Double buffer mode : Set the transmitting byte number of buffer 0. Single buffer mode : The received byte number is automatically set. Double buffer mode : The received byte number of buffer 0 is automatically set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
OUT : Receive byte number bit
0
-
O
b7
Not used
-
-
OO
-: State remaining
Fig. 3.4.42 Structure of EP01 byte number register 0
b7
b0
0
EP02 byte number register 0 (EP02BYT0) [address 001E16]
Bit symbol B0BYT02 [6:0]
Bit name IN : Transmit byte number bit
Function Single buffer mode: Set the transmitting byte number. Double buffer mode : Set the transmitting byte number of buffer 0. Single buffer mode: The received byte number is automatically set. Double buffer mode : The received byte number of buffer 0 is automatically set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
OUT : Receive byte number bit
0
-
O
b7
Not used
-
-
OO
-: State remaining
Fig. 3.4.43 Structure of EP02 byte number register 0
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
EP03 byte number register 0 (EP03BYT0) [address 001E16]
Bit symbol B0BYT03 [6:0]
Bit name IN : Transmit byte number bit
Function Single buffer mode: Set the transmitting byte number. Double buffer mode : Set the transmitting byte number of buffer 0. Single buffer mode: The received byte number is automatically set. Double buffer mode : The received byte number of buffer 0 is automatically set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
OUT : Receive byte number bit
0
-
O
b7
Not used
-
-
OO
-: State remaining
Fig. 3.4.44 Structure of EP03 byte number register 0
b7
b0
0
00
0
EP10 byte number register (EP10BYT) [address 001E16]
Bit symbol BBYT10 [3:0] b7:b4
Bit name
Function
Transmit/receive byte number bit OUT : The received byte number is automatically set. IN : Set the transmitting byte number. Write 0 when writing. Not used 0 is read when reading.
At reset RW H/W S/W 0 -- OO -- -- OO
--: State remaining
Fig. 3.4.45 Structure of EP10 byte number register
b7
b0
0
00
000
0
EP11 byte number register (EP11BYT0) [address 001E16]
Bit symbol B0BYT11 b7:b1
Bit name Transmit byte number bit Not used
Function IN : Set the transmitting byte number. Write 0 when writing. 0 is read when reading.
At reset RW H/W S/W 0 -- OO -- -- OO
--: State remaining
Fig. 3.4.46 Structure of EP11 byte number register 0
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
EP01 byte number register 1 (EP01BYT1) [address 001F16]
Bit symbol B1BYT01 [6:0]
Bit name IN : Transmit byte number bit
Function Single buffer mode: These bits are invalid. Double buffer mode : Set the transmitting byte number of buffer 1. Single buffer mode: These bits are invalid. Double buffer mode : The received byte number of buffer 1 is automatically set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
OUT : Receive byte number bit
0
-
O
b7
Not used
-
-
OO
-: State remaining
Fig. 3.4.47 Structure of EP01 byte number register 1
b7
b0
0
EP02 byte number register 1 (EP02BYT1) [address 001F16]
Bit symbol B1BYT02 [6:0]
Bit name IN : Transmit byte number bit
Function Single buffer mode: These bits are invalid. Double buffer mode : Set the transmitting byte number of buffer 1. Single buffer mode: These bits are invalid. Double buffer mode : The received byte number of buffer 1 is automatically set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
OUT : Receive byte number bit
0
-
O
b7
Not used
-
-
OO
-: State remaining
Fig. 3.4.48 Structure of EP02 byte number register 1
b7
b0
0
EP03 byte number register 1 (EP03BYT1) [address 001F16]
Bit symbol B1BYT03 [6:0]
Bit name IN : Transmit byte number bit
Function Single buffer mode: These bits are invalid. Double buffer mode : Set the transmitting byte number of buffer 1. Single buffer mode: These bits are invalid. Double buffer mode : The received byte number of buffer 1 is automatically set. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
OUT : Receive byte number bit
0
-
O
b7
Not used
-
-
OO
-: State remaining
Fig. 3.4.49 Structure of EP03 byte number register 1
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APPENDIX 38K2 Group 3.4 List of registers
Prescaler 12, Prescaler X
b7 b6 b5 b4 b3 b2 b1 b0 Prescaler 12 (PRE12) [Address : 2016] Prescaler X (PREX) [Address : 2416]
B
Name
Function
At reset
RW
0 *Set a count value of each prescaler.
*The value set in this register is written to both each prescaler 1 and the corresponding prescaler latch at the same time. *When this register is read out, the count value of the corres2 ponding prescaler is read out.
1 1 1 1 1 1 1 1
3 4 5 6 7
Fig. 3.4.50 Structure of Prescaler12, Prescaler X
Timer 1
b7 b6 b5 b4 b3 b2 b1 b0 Timer 1 (T1) [Address : 2116]
B
Name
Function
At reset
RW
0 *Set a count value of timer 1.
*The value set in this register is written to both timer 1 and timer 1 latch at the same time. *When this register is read out, the timer 1's count value is read 2 out.
1 0 0 0 0 0 0 0
1
3 4 5 6 7
Fig. 3.4.51 Structure of Timer 1
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APPENDIX 38K2 Group 3.4 List of registers
Timer 2, Timer X
b7 b6 b5 b4 b3 b2 b1 b0 Timer 2 (T2) [Address : 2216] Timer X (TX) [Address : 2516]
Name B 0 *Set a count value of each timer. 1
Function
At reset
RW
1 1 1 1 1 1 1 1
*The value set in this register is written to both each timer and each timer latch at the same time. *When this register is read out, each timer's count value is read 2 out.
3 4 5 6 7
Fig. 3.4.52 Structure of Timer 2, Timer X
Timer X mode register
b7 b6 b5 b4 b3 b2 b1 b0 Timer X mode register (TM) [Address : 2316]
B 0 1
Name
Timer X operating mode bits
b1 b0
Function
0 0 1 1 0 : Timer mode 1 : Pulse output mode 0 : Event counter mode 1 : Pulse width measurement mode
At reset
RW
0 0 0
2 CNTR0 active edge selection
bit
The function depends on the operating mode of Timer X. (Refer to Table 2.3.1) 0 : Count start 1 : Count stop
3 Timer X count stop bit 4 5 6 7
0 0 0 0 0
Nothing is arranged for these bits. These are write disabled bits. When these bits are read out, the contents are "0".
Fig. 3.4.53 Structure of Timer X mode register
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APPENDIX 38K2 Group 3.4 List of registers
Transmit/Receive buffer register
b7 b6 b5 b4 b3 b2 b1 b0
Transmit/Receive buffer register (TB/RB) [Address : 2616] B Name Function
At reset
RW
0 The transmission data is written to or the receive data is read out
from this buffer register. 1 * At writing: A data is written to the transmit buffer register. * At reading: The contents of the receive buffer register are read 2 out.
? ? ? ? ? ? ? ?
3 4 5 6 7
Note: The contents of transmit buffer register cannot be read out. The data cannot be written to the receive buffer register.
Fig. 3.4.54 Structure of Transmit/Receive buffer register
Serial I/O status register
b7 b6 b5 b4 b3 b2 b1 b0 Serial I/O status register (SIOSTS) [Address : 2716]
B Name 0 Transmit buffer empty flag
(TBE)
Function
0 : Buffer full 1 : Buffer empty 0 : Buffer empty 1 : Buffer full 0 : Transmit shift in progress 1 : Transmit shift completed 0 : No error 1 : Overrun error 0 : No error 1 : Parity error 0 : No error 1 : Framing error 0 : (OE) U (PE) U (FE) = 0 1 : (OE) U (PE) U (FE) = 1
At reset
RW

0 0 0 0 0 0 0 1
1 Receive buffer full flag (RBF) 2 Transmit shift register shift
completion flag (TSC)
3 Overrun error flag (OE) 4 Parity error flag (PE) 5 Framing error flag (FE) 6 Summing error flag (SE)
7 Nothing is allocated for this bit. This is a write disabled bit.
When this bit is read out, the contents are "1".
Fig. 3.4.55 Structure of Serial I/O status register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
00
00
HUB interrupt source enable register (HUBICON) [address 002816]
Bit symbol DP1E DP2E b6:b2 HRWUE
Bit name HUB downstream port 1 interrupt enable bit HUB downstream port 2 interrupt enable bit Not used HUB upstream port remotewakeup output enable bit
Function 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled Write "0" when writing. "0" is read when reading. 0 : Disabled 1 : Enabled
At reset RW H/W S/W 0 - OO 0 - 0 - - - OO OO OO
-: State remaining
Fig. 3.4.56 Structure of HUB interrupt source enable register
b7
b0
0
000
0
HUB interrupt source register (HUBIREQ) [address 002916]
Bit symbol DP1
Bit name HUB downstream port 1 interrupt bit
DP2
HUB downstream port 1 interrupt bit
b6:b2 HRWU
Not used HUB upstream port remote -wakeup output enable bit
At reset RW H/W S/W - O This bit is set to "1" when any one of DP1 interrupt 0 source register's bits at least is set to "1". This bit is cleared to "0" by clearing DP1 interrupt source register to "0016". Writing to this bit causes no state change. - O This bit is set to "1" when any one of DP2 interrupt 0 source register's bits at least is set to "1". This bit is cleared to "0" by clearing DP2 interrupt source register to "0016". Writing to this bit causes no state change. - - OO Write "0" when writing. "0" is read when reading. 0 - OO 0 : Remote-wakeup being not output 1 : Remote-wakeup being output This bit change is not for a interrupt source. When detecting 2.5 s or more of K-signal on a downstream port in Hub-suspended state, K-signal is output on from a upstream port and this bit is simultaneously set to "1". "0" can be set by software, but "1" cannot be set. Function -: State remaining
Fig. 3.4.57 Structure of HUB interrupt source register
b7
b0
0
0
00
00
0
HUB downstream port index register (HUBINDEX) [address 002A16]
Bit symbol DPIDX b7:b1
Bit name HUB downstream port index bit Not used
Function 0 : HUB downstream port 1 1 : HUB downstream port 2 Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO - - OO
-: State remaining
Fig. 3.4.58 Structure of HUB downstream port index register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
00
DP1 interrupt source register (DP1REQ) [address 002B16]
Bit symbol PTDIS1
Bit name Downstream port 1 disconnect detection interrupt bit
Function
PTCON1
PTERR1
PTRSM1
PTCHG1
b7:b5
0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when detecting a bus-disconnect state (2.5 s or more of SE0) on a downstream port 1 in DSCONN1 = "1". "0" can be set by software, but "1" cannot be set. Downstream port 1 connect 0: No interrupt request issued detection interrupt bit 1: Interrupt request issued This bit is set to "1" when detecting a bus-connect state (2.5 s or more of J- or K- state) on a downstream port 1 in DSCONN1 = "0". "0" can be set by software, but "1" cannot be set. Downstream port 1 port error 0: No interrupt request issued interrupt bit 1: Interrupt request issued This bit is set to "1" when an error occurs on a downstream port 1. "0" can be set by software, but "1" cannot be set. Downstream port 1 resume 0: No interrupt request issued interrupt bit 1: Interrupt request issued This bit is set to "1" when detecting a resume signal on a downstream port 1 in the condition of HUB suspended or port suspended state. "0" can be set by software, but "1" cannot be set. Downstream port 1 bus-change 0: No interrupt request issued detection interrupt bit 1: Interrupt request issued This bit is set to "1" when detecting a bus-change of a downstream port 1 in the condition of HUB suspended state. It is also "1" in the internal clock halted. "0" can be set by software, but "1" cannot be set. Not used Write "0" when writing. "0" is read when reading.
At reset R W H/W S/W 0 - OO
0
-
OO
0
-
OO
0
-
OO
0
-
OO
-
-
OO
-: State remaining
Fig. 3.4.59 Structure of DP1 interrupt source register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
00
DP2 interrupt source register (DP2REQ) [address 002B16]
Bit symbol PTDIS2
Bit name Downstream port 2 disconnect detection interrupt bit
Function
PTCON2
PTERR2
PTRSM2
PTCHG2
b7:b5
0: No interrupt request issued 1: Interrupt request issued This bit is set to "1" when detecting a bus-disconnect state (2.5 s or more of SE0) on a downstream port 2 in DSCONN2 = "1". "0" can be set by software, but "1" cannot be set. Downstream port 2 connect 0: No interrupt request issued detection interrupt bit 1: Interrupt request issued This bit is set to "1" when detecting a bus-connect state (2.5 s or more of J- or K- state) on a downstream port 2 in DSCONN2 = "0". "0" can be set by software, but "1" cannot be set. Downstream port 2 port error 0: No interrupt request issued interrupt bit 1: Interrupt request issued This bit is set to "1" when an error occurs on a downstream port 2. "0" can be set by software, but "1" cannot be set. Downstream port 2 resume 0: No interrupt request issued interrupt bit 1: Interrupt request issued This bit is set to "1" when detecting a resume signal on a downstream port 2 in the condition of HUB suspended or port suspended state. "0" can be set by software, but "1" cannot be set. Downstream port 2 bus-change 0: No interrupt request issued detection interrupt bit 1: Interrupt request issued This bit is set to "1" when detecting a bus-change of a downstream port 2 in the condition of HUB suspended state. It is also "1" in the internal clock halted. "0" can be set by software, but "1" cannot be set. Not used Write "0" when writing. "0" is read when reading.
At reset R W H/W S/W 0 - OO
0
-
OO
0
-
OO
0
-
OO
0
-
OO
-
-
OO
-: State remaining
Fig. 3.4.60 Structure of DP2 interrupt source register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
DP1 control register (DP1CON) [address 002C16]
Bit symbol DSCONN1 DSPTEN1
Bit name Downstream port 1 connect bit
Function
DSSUSP1
DSDETE1
DSRSTO1 DSRSMO1
DSRMOD1
DSLSPD1
0 : Disconnect ; PTCON1 interrupt enabled 1 : Connect ; PTDIS1 interrupt enabled Downstream port 1 enable bit 0 : Downstream port 1 disabled 1 : Downstream port 1 enabled ; This bit is cleared when an interrupt of PTDIS1 or PTERR1 is generated. Downstream port 1 suspend bit 0 : No port suspended 1 : Port suspended; This bit is cleared when an interrupt of PTDIS1 or PTRSM1 is generated. Downstream port 1 connect0 : Connect/disconnect-state detection disabled ; PTCON1 state detection enable bit and PTDIS1 interrupts disabled 1 : Connect/disconnect-state detection enabled ; This bit is cleared when an interrupt of PTCON1, PTDIS1 or PTERR1 is generated. Downstream port 1 SE0 signal 0 : Being not output transmit bit 1 : SE0 signal being output Downstream port 1 resume 0 : Being not output signal transmit bit 1 : K-signal being output ; When writing "0", a low-speed EOP is output and then a transition to being not output occurs. Downstream port 1 bus-state 0 : Mode where a downstream port 1 bus-state is read, read mode control bit using RD signal 1 : Mode where a downstream port 1 bus-state is read, using EOF2 signal (internal signal) Downstream port 1 USB transfer 0 : Full-speed mode (12MHz) 1 : Low-speed mode (1.5 MHz)
At reset RW H/W S/W - OO 0 0 - OO
0
-
OO
0
-
OO
0 0
- -
OO OO
0
-
OO
0
-
OO
-: State remaining
Fig. 3.4.61 Structure of DP1 control register
b7
b0
DP2 control register (DP2CON) [address 002C16]
Bit symbol DSCONN2 DSPTEN2
Bit name Downstream port 2 connect bit
Function
DSSUSP2
DSDETE2
DSRSTO2 DSRSMO2
DSRMOD2
DSLSPD2
0 : Disconnect ; PTCON2 interrupt enabled 1 : Connect ; PTDIS2 interrupt enabled Downstream port 2 enable bit 0 : Downstream port 2 disabled 1 : Downstream port 2 enabled ; This bit is cleared when an interrupt of PTDIS2 or PTERR2 is generated. Downstream port 2 suspend bit 0 : No port suspended 1 : Port suspended; This bit is cleared when an interrupt of PTDIS2 or PTRSM2 is generated. Downstream port 2 connect0 : Connect-state detection disabled ; PTCON2 and PTDIS2 state detection enable bit interrupts disabled 1 : Connect-state detection enabled ; This bit is cleared when an interrupt of PTCON2, PTDIS2 or PTERR2 is generated. Downstream port 2 SE0 signal 0 : Being not output transmit bit 1 : SE0 signal being output Downstream port 2 resume 0 : Being not output signal transmit bit 1 : K-signal being output ; When writing "0", a low-speed EOP is output and then a transition to being not output occurs. Downstream port 2 bus-state 0 : Mode where a downstream port 2 bus-state is read, read mode control bit using RD signal 1 : Mode where a downstream port 2 bus-state is read, using EOF2 signal (internal signal) Downstream port 2 USB transfer 0 : Full-speed mode (12MHz) speed select bit 1 : Low-speed mode (1.5 MHz)
At reset RW H/W S/W - OO 0 0 - OO
0
-
OO
0
-
OO
0 0
- -
OO OO
0
-
OO
0
-
OO
-: State remaining
Fig. 3.4.62 Structure of DP2 control register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
0
00
00
DP1 status register (DP1STS) [address 002D16]
Bit symbol D1MINUS
Bit name D1- signal bit
D1PLUS
D1+ signal bit
b7:b2
Not used
At reset RW H/W S/W In- O In DSRMOD1 = "0", a downstream port 1 bus-state is Indefinite definite read, using RD signal. In DSRMOD1 = "1", a downstream port 1 bus-state is read, using EOF2 signal (internal signal). In- O In DSRMOD1 = "0", a downstream port 1 bus-state is Indefinite definite read, using RD signal. In DSRMOD1 = "1", a downstream port 1 bus-state is read, using EOF2 signal (internal signal). - - OO Write "0" when writing. "0" is read when reading. Function -: State remaining
Fig. 3.4.63 Structure of DP1 status register
b7
b0
0
0
00
00
DP2 status register (DP2STS) [address 002D16]
Bit symbol D2MINUS
Bit name D2- signal bit
D2PLUS
D2+ signal bit
b7:b2
Not used
At reset RW H/W S/W InIn- O In DSRMOD2 = "0", a downstream port 2 bus-state is definite definite read, using RD signal. In DSRMOD2 = "1", a downstream port 2 bus-state is read, using EOF2 signal (internal signal). In- O In DSRMOD2 = "0", a downstream port 2 bus-state is Indefinite definite read, using RD signal. In DSRMOD2 = "1", a downstream port 2 bus-state is read, using EOF2 signal (internal signal). - - OO Write "0" when writing. "0" is read when reading. Function -: State remaining
Fig. 3.4.64 Structure of DP2 status register
b7
b0
00
0
0
0
EXB interrupt source enable register (EXBICON) [address 003016] (Note)
Bit symbol RXB_ENB TXB_ENB MC_ENB Bit name Function At reset RW H/W S/W 0 - OO 0 0 - - OO OO
b7:b3
CPU channel receive enable bit 0 : Operation disabled (Interrupt disabled) 1 : Operation enabled (Receive buffer full interrupt enabled) CPU channel transmit enable bit 0 : Operation disabled (Interrupt disabled) 1 : Operation enabled (Transmit buffer empty interrupt enabled) 0 : Operation disabled (Memory channel operation end Memory channel operation interrupt disabled) enable bit 1 : Operation enabled (Memory channel operation end interrupt disabled) Write "0" when writing. Not used "0" is read when reading.
-
-
OO
-: State remaining Note: Do not set each bit simultaneously.
Fig. 3.4.65 Structure of EXB interrupt source enable register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
0
0
0
EXB interrupt source register (EXBIREQ) [address 003116] (Note 1)
Bit symbol RXB_FULL
Bit name Receive buffer full bit
Function 0 : Receive buffer empty 1 : Receive buffer full 0 : Transmit buffer full 1 : Transmit buffer empty b3b2 0 0 : Memory channel operation stopped 0 1 : Memory channel being operating; No external access 1 0 : Memory channel being operating; External accessing 1 1 : Memory channel operation end; Memory channel operation end interrupt generated Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 0 O-
(Note 3)
TXB_EMPTY Transmit buffer empty bit MC_STS [1:0] (Note 2) Memory channel status bits
0 0
0
(Note 4)
O- O-
0
b7:b4
Not used
-
-
OO
-: State remaining Notes 1: When the the ExA1 pin control bit of external I/O configuration register is "1", the external MCU bus can read this register contents by setting the ExA1 pin to "H". 2: The memory channel status bits indicate the status of memory channel. In MC_ENB = "0" these bits are always "002". When the memory channel operation ends, these bits are set to "112" and the memory channel operation end interrupt is generated. These bits can be read out during operation, so that it will show that whether the external MCU bus is accessing or not. 3: This bit is cleared to "0" when reading the transmit/receive buffer register in the CPU channel receive enable bit = "1" or when the CPU channel receive enable bit is "0". 4: This bit is cleared to "0" when writing to the transmit/receive buffer register in the CPU channel transmit enable bit = "1" or when the CPU channel transmit enable bit is "0".
Fig. 3.4.66 Structure of EXB interrupt source register
b7
b0
0
0
0
00
EXB index register (EXBINDEX) [address 003316]
Bit symbol INDEX [2:0] Index bits
Bit name
b7:b3
Not used
At reset RW H/W S/W - OO The accessible register, using the register window, 0 depends on these index bits contents as follows: b2b1b0 0 0 0 : External I/O configuration register 0 0 1 : Transmit/Receive buffer register 0 1 0 : Memory channel operation mode register 0 1 1 : Memory address counter 1 0 0 : End address register 1 0 1 : Do not set. 1 1 0 : Do not set. 1 1 1 : Do not set. - - OO Write "0" when writing. "0" is read when reading. Function -: State remaining
Fig. 3.4.67 Structure of EXB index register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
Register window 1 (EXBREG1) [address 003416]
Bit symbol LOW_WIN [7:0] -
Bit name
At reset RW H/W S/W In- O O The accessible register, using this register window, Independs on the EXB index register contents as definite definite follows: Index value : External I/O configuration register "0016" "0116" : Transmit/Receive buffer register "0216" : Memory channel operation mode register "0316" : Memory address counter "0416" : End address register Function
Fig. 3.4.68 Structure of Register window 1
b7
b0
0
0
0
Index = 0016 : External I/O configuration register (EXBCFGL) [address 003416]
Bit symbol EXB_CTR INT_CTR [2:0]
Bit name EXB pin control bit (Pins P10 to P17, P30 to P34) P33/ExINT pin control bit
Function 0 : Port 1 : EXB function pin Selects a signal of P33/ExINT pin. ON/OFF is programmed by each bit. An output logical sum of P33/ExINT pins set for ON are performed and it is output as an "L" active signal. b3b2b1 0 0 1 : RxB_RDY (RxBuf ready) output 0 1 0 : TxB_RDY (TxBuf ready) output 1 0 0 : Mch_req (Memory channel request) output Others : Do not set. 0 : Port 1 : A1 input (used to read status) Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO 0 - OO
A1_CTR b7:b5
P43/ExA1 pin control bit Not used
0 -
- -
OO OO
-: State remaining
Fig. 3.4.69 Index00[low]; Structure of External I/O configuration register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
Index =0116 : Transmit/Receive buffer register (RXBUF/TXBUF) [address 003416]
Bit symbol RXBUF/ TXBUF -
Bit name
At reset RW H/W S/W - OO The data received from an external bus is written here 0 at the rise timing of external write signal. The data transmitted to an external bus is written here at the timing of internal CPU write or memory write. Function
The receive buffer register (RXBUF) contents can be read out by reading to this address with the CPU. The data which the CPU has written to this address is stored in the transmit buffer register (TXBUF). However, do not perform write operation with the CPU to this address if the memory channel direction control bits of memory channel operation mode register is "102" (transmit mode) and the memory channel status bits of EXB interrupt source register are "012" or "102" (memory channel being operating).
Fig. 3.4.70 Index01[low]; Structure of Transmit/Receive buffer register
b7
b0
0
0
0
0
0
Index =0216 : Memory channel operation mode register (MCHMOD) [address 003416]
Bit symbol MC_DIR [1:0]
Bit name Memory channel direction control bit
Function b1b0 0 0 : Operation disabled 0 1 : Receive mode 1 0 : Transmit mode 1 1 : Do not set. 0 : Cycle mode (each byte transfer according to assertion or negation) 1 : Burst mode (continuous transfer till the terminal count) Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
BURST
Burst bit
0
-
OO
b7:b3
Not used
-
-
OO
-: State remaining
Fig. 3.4.71 Index02[low]; Structure of Memory channel operation mode register
b7
b0
Index = 0316 : Memory address counter (MEMADL) [address 003416]
Bit symbol IM_A [7:0] -
Bit name
At reset RW H/W S/W Register to set the low-order address of memory 0 - OO channel operation beginning. This contents are increased each time one memory access ends. Function
Fig. 3.4.72 Index03[low]; Structure of Memory address counter
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
Index = 0416 : End address register (ENDADL) [address 003416]
Bit symbol END_A [7:0] -
Bit name
At reset RW H/W S/W OO Register to set the low-order address of memory 0 - channel operation end. Function -: State remaining
Fig. 3.4.73 Index04[low]; Structure of End address register
b7
b0
Register window 2 (EXBREG2) [address 003516]
Bit symbol HIGH_WIN [7:0] -
Bit name
At reset RW H/W S/W In- O O The accessible register, using this register window, Independs on the EXB index register contents as definite definite follows: Index value : External I/O configuration register "0016" : Transmit/Receive buffer register "0116" : Memory channel operation mode register "0216" "0316" : Memory address counter : End address register "0416" Function
Fig. 3.4.74 Structure of Register window 2
b7
b0
0
0
0
Index = 0016 : External I/O configuration register (EXBCFGH) [address 003516]
Bit symbol DRQ_CTR [1:0]
Bit name P40/ExDREQ/RxD pin control bit
Function b1b0 0 0 : Port 0 1 : Do not set. 1 0 : ExDREQ function; RxB_RDY (RxBuf ready) output 1 1 : ExDREQ function; Mch_req (Memory channel request) output Specifies P41/ExDACK/TxD pin function. Selects which mode; requiring read or write signal, or not requiring it for use of DMA acknowledge function. b3b2 0 0 : Port 0 1 : Do not set. 1 0 : ExDACK function; DMA acknowledge input (Mode for read and write signals used together) 1 1 :ExDACK function; DMA acknowledge input (Mode for read and write signals not required) 0 : Port 1 : ExTC (terminal count) input Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
DAK_CTR [1:0]
P41/ExDACK/TxD pin control bit
0
-
OO
TC_CTR b7:b5
P42/ExTC/SCLK pin control bit Not used
0 -
- -
OO OO
-: State remaining
Fig. 3.4.75 Index00[high]; Structure of External I/O configuration register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
0
0
0
0
Index = 0316 : Memory address counter (MEMADH) [address 003516]
Bit symbol IM_A [10:8] -
Bit name
b7:b3
Not used
At reset RW H/W S/W Register to set the high-order address of memory 0 - OO channel operation start. This contents are increased each time one memory access ends. Write "0" when writing. - - OO "0" is read when reading. Function -: State remaining
Fig. 3.4.76 Index03[high]; Structure of Memory address counter
b7
b0
0
0
0
0
0
Index = 0416 : End address register (ENDADH) [address 003516]
Bit symbol END_A [10:8] b7:b3 - Not used
Bit name
At reset RW H/W S/W Register to set the high-order address of memory 0 - OO channel operation end. Write "0" when writing. - - OO "0" is read when reading. Function -: State remaining
Fig. 3.4.77 Index04[high]; Structure of End address register
AD control register
b7 b6 b5 b4 b3 b2 b1 b0 AD control register (ADCON) [Address : 3616 ]
B 0 1 2 3
Name
Analog input pin selection bits
b2 b1 b0
Function
0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 : P10/DQ0/AN0 1 : P11/DQ1/AN1 0 : P12/DQ2/AN2 1 : P13/DQ3/AN3 0 : P14/DQ4/AN4 1 : P15/DQ5/AN5 0 : P16/DQ6/AN6 1 : P17/DQ7/AN7
At reset
RW
0
AD conversion completion bit 0 : Conversion in progress 1 : Conversion completed When these bits are read out, the contents are indefinite.
1 ? ? ? ?
4 Nothing is arranged for these bits. These are write disabled bits. 5 6 7
Fig. 3.4.78 Structure of AD control register
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APPENDIX 38K2 Group 3.4 List of registers
AD conversion register 1
b7 b6 b5 b4 b3 b2 b1 b0 AD conversion register 1 (AD1) [Address : 3716]
B
stored.
Function
At reset
RW

0 The read-only register in which the A/D conversion's results are 1 2 3 4
b7
? ?
b7
< 8-bit read>
b0
? ? ?
b9 b8 b7 b6 b5 b4 b3 b2
< 10-bit read>
b0
5 6 7
b7 b6 b5 b4 b3 b2 b1 b0
? ? ?
Fig. 3.4.79 Structure of AD conversion register 1
AD conversion register 2
b7 b6 b5 b4 b3 b2 b1 b0
0
AD conversion register 2 (AD2) [Address : 38
16]
B
stored.
Name
Function
At reset
RW
0 The read-only register in which the A/D conversion's results are
< 10-bit read>
? ?
1
b7
0
b0 b9 b8
2 Nothing is allocated for these bits. These are write disabled bits. 3 4 5 6 7 Fix this bit to "0".
When these bits are read out, the contents are "0".
0 0 0 0 0 0

Fig. 3.4.80 Structure of AD conversion register 2
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APPENDIX 38K2 Group 3.4 List of registers
Watchdog timer control register
b7 b6 b5 b4 b3 b2 b1 b0 Watchdog timer control register (WDTCON) [Address : 3916]
Function B Name 0 Watchdog timer H (for read-out of high-order 6 bits) 1 2 3 4 5 6 STP instruction disable bit 7 Watchdog timer H count
source selection bit 0 : STP instruction enabled 1 : STP instruction disabled 0 : Watchdog timer L underflow 1 : System clock/16
At reset
RW

1 1 1 1 1 1 0 0
Fig. 3.4.81 Structure of Watchdog timer control register
CPU mode register
b7 b6 b5 b4 b3 b2 b1 b0 01 CPU mode register (CPUM: address 3B16)
B
0 1 2 3 4 5 6
Name
Processor mode bits
b1 b0
Function
0 0 : Single-chip mode 0 1 : Not available 1 0 : Not available 1 1 : Not available 0 : 0 page 1 : 1 page
At reset R W
0
*
0 1 0
Stack page selection bit Fix this bit to "1". Fix this bit to "0". System clock selection bit System clock division ratio selection bits
0 : Main clock f(XIN) 1 : fSYN
b7 b6
0 0
7
0 0 : = f(system clock)/8 (8-divide mode) 0 1 : = f(system clock)/4 (4-divide mode) 1 0 : = f(system clock)/2 (2-divide mode) 1 1 : = f(system clock) (Through mode)
*: The initial value of bit 1 depends on the CNVss level.
Fig. 3.4.82 Structure of CPU mode register
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APPENDIX 38K2 Group 3.4 List of registers
Interrupt request register 1
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt request register 1 (IREQ1) [Address : 3C16]
B
Name
Function
0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued
At reset
RW

USB bus reset 0 interrupt request bit
0 0 0 0 0 0 0 0
1 USB SOF interrupt request bit 2 USB device interrupt request bit 3 EXB interrupt request bit 4 request bit
INT0 interrupt
interrupt 5 Timer X bit request
6 request bit
Timer 1 interrupt
Timer 2 interrupt 0 : No interrupt request issued 7 request bit 1 : Interrupt request issued "0" can be set by software, but "1" cannot be set.
Fig. 3.4.83 Structure of Interrupt request register 1
Interrupt request register 2
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt request register 2 (IREQ2) [Address : 3D16]
B
Name
Function
0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued 0 : No interrupt request issued 1 : Interrupt request issued
At reset
RW

INT1 interrupt 0 request bit
0 0 0 0 0 0 0 0
1 USB HUB interrupt request bit
receive 2 Serial I/Orequest bit interrupt transmit 3 Serial I/Orequest bit interrupt
4 request bit
CNTR0 interrupt
5 Key-on wake-up bit interrupt request 6 interrupt request bit 7
A/D conversion
Nothing is arranged for this bits. This is a write disabled bit. When this bit is read out, the contents are "0".
"0" can be set by software, but "1" cannot be set.
Fig. 3.4.84 Structure of Interrupt request register 2
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APPENDIX 38K2 Group 3.4 List of registers
Interrupt control register 1
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt control register 1 (ICON1) [Address : 3E16]
B
Name
Function
0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled
At reset
RW
USB bus reset 0 interrupt enable bit
0 0 0 0 0 0 0 0
1 USB SOF interrupt enable bit 2 USB device interrupt enable bit 3 EXB interrupt enable bit 4 enable bit
INT0 interrupt
interrupt 5 Timer Xbit enable
6 enable bit 7 enable bit
Timer 1 interrupt
Timer 2 interrupt
Fig. 3.4.85 Structure of Interrupt control register 1
Interrupt control register 2
b7 b6 b5 b4 b3 b2 b1 b0
0
Interrupt control register 2 (ICON2) [Address : 3F16]
B
Name
Function
0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled 0 : Interrupt disabled 1 : Interrupt enabled
At reset
RW
INT1 interrupt 0 enable bit
0 0 0 0 0 0 0 0
1 USB HUB interrupt enable bit
receive 2 Serial I/Oenable bit interrupt transmit 3 Serial I/Oenable bit interrupt
4 enable bit
CNTR0 interrupt
5 Key-on wake-upbit interrupt enable 6
A/D conversion interrupt enable bit
7 Fix this bit to "0".
Fig. 3.4.86 Structure of Interrupt control register 2
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APPENDIX 38K2 Group 3.4 List of registers
Serial I/O control register
b7 b6 b5 b4 b3 b2 b1 b0 Serial I/O control register (SIOCON) [Address : 0FE016]
B
Name
Function
0 : System clock 1 : System clock/4 * In clock synchronous serial I/O 0 : BRG output divided by 4 1 : External clock input * In UART 0 : BRG output divided by 16 1 : External clock input divided by 16 0 : P43 pin operates as ordinary I/O pin 1 : P43 pin operates as SRDY output pin 0 : Interrupt when transmit buffer has emptied 1 : Interrupt when transmit shift operation is completed 0 : Transmit disabled 1 : Transmit enabled 0 : Receive disabled 1 : Receive enabled 0 : Clock asynchronous(UART) serial I/O 1 : Clock synchronous serial I/O 0 : Serial I/O disabled (pins P40 to P43 operate as ordinary I/O pins) 1 : Serial I/O enabled (pins P40 to P43 operate as serial I/O pins)
At reset
RW
0 BRG count source selection bit (CSS) 1 Serial I/O synchronous clock selection bit (SCS)
0 0
2 SRDY output enable bit
(SRDY)
0 0 0 0 0 0
3 Transmit interrupt
source selection bit (TIC)
4 Transmit enable bit (TE) 5 Receive enable bit (RE) 6 Serial I/O mode selection bit
(SIOM)
7 Serial I/O enable bit
(SIOE)
Fig. 3.4.87 Structure of Serial I/O control register
UART control register
b7 b6 b5 b4 b3 b2 b1 b0 UART control register (UARTCON) [Address : 0FE116]
Name B Character length selection bit 0
(CHAS) 1 Parity enable bit (PARE) 2 Parity selection bit (PARS) 3 Stop bit length selection bit (STPS)
Function
0 : 8 bits 1 : 7 bits 0 : Parity checking disabled 1 : Parity checking enabled 0 : Even parity 1 : Odd parity 0 : 1 stop bit 1 : 2 stop bits
At reset
RW
0 0 0 0 0 1 1 1

4 Nothing is allocated for this bit. This is a write disabled bit.
When this bit is read out, the contents are "0".
5 Nothing is allocated for these bits. These are write disabled bits.
When these bits are read out, the contents are "1".
6 7
Fig. 3.4.88 Structure of UART control register
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APPENDIX 38K2 Group 3.4 List of registers
Baud rate generator
b7 b6 b5 b4 b3 b2 b1 b0 Baud rate generator (BRG) [Address : 0FE216]
Function B Set a count value of baud rate generator. 0 1 2 3 4 5 6 7
At reset
RW
? ? ? ? ? ? ? ?
Fig. 3.4.89 Structure of Baud rate generator
b7
b0
0
EP01 MAX. packet size register (EP01MAX) [address 0FEC16]
Bit symbol MXPS01 [6:0] b7
Bit name Max. packet size bit Not used
Function IN : These bits are invalid. OUT : Set the maximum packet size. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO - - OO
-: State remaining
Fig. 3.4.90 Structure of EP01 MAX. packet size register
b7
b0
0
EP02 MAX. packet size register (EP02MAX) [address 0FEC16]
Bit symbol MXPS02 [6:0] b7
Bit name Max. packet size bit Not used
Function IN : These bits are invalid. OUT : Set the maximum packet size. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO - - OO
-: State remaining
Fig. 3.4.91 Structure of EP02 MAX. packet size register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
EP03 MAX. packet size register (EP03MAX) [address 0FEC16]
Bit symbol MXPS03 [6:0] b7
Bit name Max. packet size bit Not used
Function IN : These bits are invalid. OUT : Set the maximum packet size. Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO - - OO
-: State remaining
Fig. 3.4.92 Structure of EP03 MAX. packet size register
b7
b0
0
00
EP00 buffer area set register (EP00BUF) [address 0FED16]
Bit symbol BADD00 [4:0]
Bit name EP00 beginning address set bit
Function Set the beginning address of EP00's buffer area. (32-byte unit) b4b3b2b1b0 0 0 0 1 0 : 004016 0 0 0 1 1 : 006016 .............. 1 1 1 1 0 : 03C016 1 1 1 1 1 : 03E016 Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b5
Not used
-
-
OO
-: State remaining
Fig. 3.4.93 Structure of EP00 buffer area set register
b7
b0
00
0
EP01 buffer area set register (EP01BUF) [address 0FED16]
Bit symbol BADD01 [4:0]
Bit name EP01 beginning address set bit
Function Set the beginning address of EP01's buffer area. (32-byte unit) b4b3b2b1b0 0 0 0 1 0 : 004016 0 0 0 1 1 : 006016 .............. 1 1 1 1 0 : 03C016 1 1 1 1 1 : 03E016 Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b5
Not used
-
-
OO
-: State remaining
Fig. 3.4.94 Structure of EP01 buffer area set register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
00
0
EP02 buffer area set register (EP02BUF) [address 0FED16]
Bit symbol BADD02 [4:0]
Bit name EP02 beginning address set bit
Function Set the beginning address of EP02's buffer area. (32-byte unit) b4b3b2b1b0 0 0 0 1 0 : 004016 0 0 0 1 1 : 006016 .............. 1 1 1 1 0 : 03C016 1 1 1 1 1 : 03E016 Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b5
Not used
-
-
OO
-: State remaining
Fig. 3.4.95 Structure of EP02 buffer area set register
b7
b0
00
0
EP03 buffer area set register (EP03BUF) [address 0FED16]
Bit symbol BADD03 [4:0]
Bit name EP03 beginning address set bit
Function Set the beginning address of EP03's buffer area. (32-byte unit) b4b3b2b1b0 0 0 0 1 0 : 004016 0 0 0 1 1 : 006016 .............. 1 1 1 1 0 : 03C016 1 1 1 1 1 : 03E016 Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b5
Not used
-
-
OO
-: State remaining
Fig. 3.4.96 Structure of EP03 buffer area set register
b7
b0
0
00
EP10 buffer area set register (EP10BUF) [address 0FED16]
Bit symbol BADD10 [4:0]
Bit name EP10 beginning address set bit
Function Set the beginning address of EP10's buffer area. (32-byte unit) b4b3b2b1b0 0 0 0 1 0 : 004016 0 0 0 1 1 : 006016 .............. 1 1 1 1 0 : 03C016 1 1 1 1 1 : 03E016 Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b5
Not used
-
-
OO
-: State remaining
Fig. 3.4.97 Structure of EP10 buffer area set register
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APPENDIX 38K2 Group 3.4 List of registers
b7
b0
0
00
EP11 buffer area set register (EP11BUF) [address 0FED16]
Bit symbol BADD11 [4:0]
Bit name EP11 beginning address set bit
Function Set the beginning address of EP11's buffer area. (32-byte unit) b4b3b2b1b0 0 0 0 1 0 : 004016 0 0 0 1 1 : 006016 .............. 1 1 1 1 0 : 03C016 1 1 1 1 1 : 03E016 Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W 0 - OO
b7:b5
Not used
-
-
OO
-: State remaining
Fig. 3.4.98 Structure of EP11 buffer area set register
Port P0 pull-up control register
b7 b6 b5 b4 b3 b2 b1 b0
Port P0 pull-up control register (PULL0) [Address : 0FF016]
B 0 1 2 3 4 5
Name
P00 pul l-up control bit P00 pul l-up control bit P00 pul l-up control bit P00 pul l-up control bit P00 pul l-up control bit P00 pul l-up control bit
Function
0 : No pull-up 1 : Pull-up 0 : No pull-up 1 : Pull-up 0 : No pull-up 1 : Pull-up 0 : No pull-up 1 : Pull-up 0 : No pull-up 1 : Pull-up 0 : No pull-up 1 : Pull-up 0 : No pull-up 1 : Pull-up 0 : No pull-up 1 : Pull-up
At reset
RW
0 0 0 0 0 0 0 0
6 P00 pul l-up control bit 7
P00 pul l-up control bit
Fig. 3.4.99 Structure of Port P0 pull-up control register
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APPENDIX 38K2 Group 3.4 List of registers
Port P5 pull-up control register
b7 b6 b5 b4 b3 b2 b1 b0
Port P5 pull-up control register (PULL5) [Address : 0FF216]
B
Name
Function
0 : No pull-up 1 : Pull-up
At reset
RW
0 P50 pul l-up control bit 1
0 0 0 0 0 0 0 0
Nothing is arranged for this bit. This is a write disabled bit. When this bit is read out, the contents are "0".
2 P52 pul l-up control bit 3 4 5 6 7
0 : No pull-up 1 : Pull-up
Nothing is arranged for these bits. These are write disabled bits. When these bits are read out, the contents are "0".
Fig. 3.4.100 Structure of Port P5 pull-up control register
Interrupt edge selection register
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt edge selection register (INTEDGE) [Address : 0FF316]
B
0 1 2 3 4 5 6 7
Name
INT0 interrupt edge selection bit
Function
0 : Falling edge active 1 : Rising edge active
At reset
RW
0 0 0 0 0 0 0 0
Nothing is arranged for this bits. This is a write disabled bit. When this bit is read out, the contents are "0".
INT1 interrupt edge selection bit
0 : Falling edge active 1 : Rising edge active
Nothing is arranged for these bits. These are write disabled bits. When these bits are read out, the contents are "0".
Fig. 3.4.101 Structure of Interrupt edge selection register
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APPENDIX 38K2 Group 3.4 List of registers
PLL control register
b7 b6 b5 b4 b3 b2 b1 b0
PLL control register (PLLCON) [Address : 0FF816] Name B Function 0 Nothing is arranged for these bit. These are write disabled bits. 1 When these bits are read out, the contents are "0". 2 3 USB clock division b4 b3 ratio selection bits 0 0 : Divided by 8 (fSYN = fUSB/8) 0 1 : Divided by 6 (fSYN = fUSB/6) 4 1 0 : Divided by 4 (fSYN = fUSB/4) 1 1 : Not selected 5 6 7 PLL operation mode b6 b5 0 0 : Not multiplied (fVCO = fXIN) selection bits 0 1 : Double (fVCO = fXIN 2) 1 0 : Quadruple (fVCO = fXIN 4) 1 1 : Multiplied by 8 (fVCO = fXIN 8) PLL enable bit 0 : Disabled 1 : Enabled
At reset
RW
0 0
0
0
Fig. 3.4.102 Structure of PLL control register
b7
b0
0
0
00
Downstream port control register (DPCTL) [address 0FF916]
Bit symbol PCON1 [1:0]
Bit name Downstream port 1 function select bit
Function b1b0 0 0 : USB port (D1-, D1+) OFF, USB difference amplifier OFF 0 1 : USB exclusive input port (D1-, D1+), USB difference amplifier OFF 1 0 : Full-speed port (D1-, D1+), USB difference amplifier ON 1 1 : Low-speed port (D1-, D1+), USB difference amplifier ON b3b2 0 0 : USB port (D2-, D2+) OFF, USB difference amplifier OFF 0 1 : USB exclusive input port (D2-, D2+), USB difference amplifier OFF 1 0 : Full-speed port (D2-, D2+), USB difference amplifier ON 1 1 : Low-speed port (D2-, D2+), USB difference amplifier ON Write "0" when writing. "0" is read when reading.
At reset RW H/W S/W - OO 0
PCON2 [1:0]
Downstream port 2 function select bit
0
-
OO
b7:b4
Not used
-
-
OO
-: State remaining
Fig. 3.4.103 Structure of Downstream port control register
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APPENDIX 38K2 Group 3.4 List of registers
MISRG
b7 b6 b5 b4 b3 b2 b1 b0 MISRG (MISRG: address 0FFB16)
B
0
Name
Oscillation stabilizing time set after STP instruction released bit
Functions
0 : Automatically set "0116" to Timer 1, "FF16" to Prescaler 12 1 : Automatically set nothing
At reset R W
0
1 2 3 4 5 6 7
Nothing is arranged for these bits. These are write disabled bits. When these bits are read out, the contents are indefinite.
?
Fig. 3.4.104 Structure of MISRG
Flash memory control register
b7 b6 b5 b4 b3 b2 b1 b0
Flash memory control register (FMCR : address 0FFE16) (Note 1)
b
Name
Functions
0 : Busy (being written or erased) 1 : Ready
At reset R W
1
0 RY/BY status flag
1 CPU rewrite mode select bit (Note 2)
2 3 4 5 6 7
0 0 : Normal mode (Software commands invalid) 1 : CPU rewrite mode (Software commands acceptable) CPU rewrite mode 0: Normal mode 0 entry flag 1: CPU rewrite mode Flash memory reset 0: Normal operation 0 bit (Note 3) 1: Reset User area/Boot area 0: User ROM area 0 selection bit (Note 4) 1: Boot ROM area Undefined Nothing is arranged for these bits. If writing, set "0". When these bits are read out, Undefined the contents are undefined. Undefined
Notes 1: The contents of flash memory control register are "XXX00001" just after reset release. 2: For this bit to be set to "1", the user needs to write "0" and then "1" to it in succession. If it is not this procedure, this bit will not be set to "1". Additionally, it is required to ensure that no interrupt will be generated during that interval. Use the control program in the area except the built-in flash memory for write to this bit. 3: This bit is valid when the CPU rewrite mode select bit is "1". Set this bit 3 to "0" subsequently after setting bit 3 to "1". 4: Use the control program in the area except the built-in flash memory for write to this bit.
Fig. 3.4.105 Structure of Flash memory control register
Rev.2.00 Oct 15, 2006 REJ09B0338-0200 page 82 of 99
APPENDIX 38K2 Group 3.5 Package outline
3.5 Package outline
PLQP0064GA-A
JEITA Package Code P-LQFP64-14x14-0.80 RENESAS Code PLQP0064GA-A Previous Code 64P6U-A MASS[Typ.] 0.7g
HD *1 D
48
33 NOTE) 1. DIMENSIONS "*1" AND "*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION "*3" DOES NOT INCLUDE TRIM OFFSET.
49
32 bp b1
c1 HE E
c
Reference Dimension in Millimeters Symbol
*2
Terminal cross section
64 17
1 ZD Index mark
16
A A2
F
L L1
D E A2 HD HE A A1 bp b1 c c1 e x y ZD ZE L L1
y e *3 bp x
Detail F
Min Nom Max 13.9 14.0 14.1 13.9 14.0 14.1 1.4 15.8 16.0 16.2 15.8 16.0 16.2 1.7 0.1 0.2 0 0.32 0.37 0.42 0.35 0.09 0.145 0.20 0.125 0 8 0.8 0.20 0.10 1.0 1.0 0.3 0.5 0.7 1.0
ZE
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A1
c
APPENDIX 38K2 Group 3.5 Package outline
PLQP0064KB-A
JEITA Package Code P-LQFP64-10x10-0.50 RENESAS Code PLQP0064KB-A Previous Code 64P6Q-A / FP-64K / FP-64KV MASS[Typ.] 0.3g
HD *1 48 D 33 NOTE) 1. DIMENSIONS "*1" AND "*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION "*3" DOES NOT INCLUDE TRIM OFFSET. bp b1
HE E
Reference Dimension in Millimeters Symbol
49
32
*2
c1
c
64
1 Index mark ZD
16
ZE
17
Terminal cross section
F
A2 A
D E A2 HD HE A A1 bp b1 c c1 e x y ZD ZE L L1
e
*3
A1
y
bp
L L1 Detail F
x
Min Nom Max 9.9 10.0 10.1 9.9 10.0 10.1 1.4 11.8 12.0 12.2 11.8 12.0 12.2 1.7 0.05 0.1 0.15 0.15 0.20 0.25 0.18 0.09 0.145 0.20 0.125 0 8 0.5 0.08 0.08 1.25 1.25 0.35 0.5 0.65 1.0
Rev.2.00 Oct 15, 2006 REJ09B0338-0200
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c
THIS PAGE IS BLANK FOR REASONS OF LAYOUT.
APPENDIX 38K2 Group 3.6 Machine instructions 38K2 Group
APPENDIX 3.6 Machine instructions
3.6 Machine instructions
Addressing mode Symbol Function Details IMP OP n ADC (Note 1) (Note 5) When T = 0 AA+M+C When T = 1 M(X) M(X) + M + C When T = 0, this instruction adds the contents M, C, and A; and stores the results in A and C. When T = 1, this instruction adds the contents of M(X), M and C; and stores the results in M(X) and C. When T=1, the contents of A remain unchanged, but the contents of status flags are changed. M(X) represents the contents of memory where is indicated by X. When T = 0, this instruction transfers the contents of A and M to the ALU which performs a bit-wise AND operation and stores the result back in A. When T = 1, this instruction transfers the contents M(X) and M to the ALU which performs a bit-wise AND operation and stores the results back in M(X). When T = 1 the contents of A remain unchanged, but status flags are changed. M(X) represents the contents of memory where is indicated by X. This instruction shifts the content of A or M by one bit to the left, with bit 0 always being set to 0 and bit 7 of A or M always being contained in C. This instruction tests the designated bit i of M or A and takes a branch if the bit is 0. The branch address is specified by a relative address. If the bit is 1, next instruction is executed. This instruction tests the designated bit i of the M or A and takes a branch if the bit is 1. The branch address is specified by a relative address. If the bit is 0, next instruction is executed. This instruction takes a branch to the appointed address if C is 0. The branch address is specified by a relative address. If C is 1, the next instruction is executed. This instruction takes a branch to the appointed address if C is 1. The branch address is specified by a relative address. If C is 0, the next instruction is executed. This instruction takes a branch to the appointed address when Z is 1. The branch address is specified by a relative address. If Z is 0, the next instruction is executed. This instruction takes a bit-wise logical AND of A and M contents; however, the contents of A and M are not modified. The contents of N, V, Z are changed, but the contents of A, M remain unchanged. This instruction takes a branch to the appointed address when N is 1. The branch address is specified by a relative address. If N is 0, the next instruction is executed. This instruction takes a branch to the appointed address if Z is 0. The branch address is specified by a relative address. If Z is 1, the next instruction is executed. 24 3 2 2C 4 3 IMM # OP n 69 2 A # OP n 2 BIT, A BIT, A, R # OP n ZP BIT, ZP BIT, ZP, R # OP n 2 # ZP, X OP n 75 4 ZP, Y # OP n 2 ABS # OP n 6D 4 ABS, X # OP n 3 7D 5 Addressing mode ABS, Y IND ZP, IND # OP n IND, X IND, Y REL SP # OP n # 7 N N Processor status register 6 V V 5 T * 4 B * 3 D * 2 I * 1 Z Z 0 C C
# OP n 65 3
# OP n 3 79 5
# OP n 3
# OP n 61 6
# OP n 2 71 6
# OP n 2
ASL C
7
0
0
BBC (Note 4)
Ai or Mi = 0?
BBS (Note 4)
Ai or Mi = 1?
BCC (Note 4)
C = 0?
BCS (Note 4)
C = 1?
BEQ (Note 4)
Z = 1?
BIT
A
M
BMI (Note 4)
N = 1?
BNE (Note 4)
Z = 0?
Rev.2.00 Oct 15, 2006 REJ09B0338-0200
V
When T = 1 M(X) M(X)
V
AND (Note 1)
When T = 0 AA M M
29 2
2
25 3
2
35 4
2
2D 4
3 3D 5
3 39 5
3
21 6
2 31 6
2
N
*
*
*
*
*
Z
*
0A 2
1
06 5
2
16 6
2
0E 6
3 1E 7
3
N
*
*
*
*
*
Z
C
13 4 + 20i
2
17 5 + 20i
3
*
*
*
*
*
*
*
*
03 4 + 20i
2
07 5 + 20i
3
*
*
*
*
*
*
*
*
90 2
2
*
*
*
*
*
*
*
*
B0 2
2
*
*
*
*
*
*
*
*
F0 2
2
*
*
*
*
*
*
*
*
V
M7 M6 *
*
*
*
Z
*
30 2
2
*
*
*
*
*
*
*
*
D0 2
2
*
*
*
*
*
*
*
*
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APPENDIX 38K2 Group 3.6 Machine instructions 38K2 Group
APPENDIX 3.6 Machine instructions
Addressing mode Symbol Function Details IMP OP n BPL (Note 4) N = 0? This instruction takes a branch to the appointed address if N is 0. The branch address is specified by a relative address. If N is 1, the next instruction is executed. This instruction branches to the appointed address. The branch address is specified by a relative address. When the BRK instruction is executed, the CPU pushes the current PC contents onto the stack. The BADRS designated in the interrupt vector table is stored into the PC. 00 7 1 IMM # OP n A # OP n BIT, A # OP n ZP # OP n BIT, ZP # OP n # ZP, X OP n ZP, Y # OP n ABS # OP n ABS, X # OP n
Addressing mode ABS, Y IND ZP, IND # OP n IND, X IND, Y REL SP # OP n 2 # 7
Processor status register 6 V * 5 T * 4 B * 3 D * 2 I * 1 Z * 0 C *
# OP n
# OP n
# OP n
# OP n
# OP n 10 2
N *
BRA
PC PC offset
80 4
2
*
*
*
*
*
*
*
*
BRK
B1 (PC) (PC) + 2 M(S) PCH SS-1 M(S) PCL SS-1 M(S) PS SS-1 I 1 PCL ADL PCH ADH V = 0?
*
*
*
1
*
1
*
*
BVC (Note 4)
This instruction takes a branch to the appointed address if V is 0. The branch address is specified by a relative address. If V is 1, the next instruction is executed. This instruction takes a branch to the appointed address when V is 1. The branch address is specified by a relative address. When V is 0, the next instruction is executed. This instruction clears the designated bit i of A or M. This instruction clears C. 18 2 1 1B 2 + 20i 1 1F 5 + 20i 2
50 2
2
*
*
*
*
*
*
*
*
BVS (Note 4)
V = 1?
70 2
2
*
*
*
*
*
*
*
*
CLB
Ai or Mi 0 C0 D0 I0 T0 V0 When T = 0 A-M When T = 1 M(X) - M
*
*
*
*
*
*
*
*
CLC
*
*
*
*
*
*
*
0
CLD
This instruction clears D.
D8 2
1
*
*
*
*
0
*
*
*
CLI
This instruction clears I.
58 2
1
*
*
*
*
*
0
*
*
CLT
This instruction clears T.
12 2
1
*
*
0
*
*
*
*
*
CLV
This instruction clears V.
B8 2
1
* C9 2 2 C5 3 2 D5 4 2 CD 4 3 DD 5 3 D9 5 3 C1 6 2 D1 6 2
0
*
*
*
*
*
*
CMP (Note 3)
When T = 0, this instruction subtracts the contents of M from the contents of A. The result is not stored and the contents of A or M are not modified. When T = 1, the CMP subtracts the contents of M from the contents of M(X). The result is not stored and the contents of X, M, and A are not modified. M(X) represents the contents of memory where is indicated by X. This instruction takes the one's complement of the contents of M and stores the result in M. This instruction subtracts the contents of M from the contents of X. The result is not stored and the contents of X and M are not modified. This instruction subtracts the contents of M from the contents of Y. The result is not stored and the contents of Y and M are not modified. This instruction subtracts 1 from the contents of A or M.
N
*
*
*
*
*
Z
C
COM
MM
__
44 5
2
N EC 4 3
*
*
*
*
*
Z
*
CPX
X-M
E0 2
2
E4 3
2
N
*
*
*
*
*
Z
C
CPY
Y-M
C0 2
2
C4 3
2
CC 4
3
N
*
*
*
*
*
Z
C
DEC
A A - 1 or MM-1
1A 2
1
C6 5
2
D6 6
2
CE 6
3 DE 7
3
N
*
*
*
*
*
Z
*
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APPENDIX 38K2 Group 3.6 Machine instructions 38K2 Group
APPENDIX 3.6 Machine instructions
Addressing mode Symbol Function Details IMP OP n DEX XX-1 YY-1 A (M(zz + X + 1), M(zz + X )) / A M(S) one's complement of Remainder SS-1 When T = 0 - A AVM When T = 1 - M(X) M(X) V M This instruction subtracts one from the current CA 2 contents of X. This instruction subtracts one from the current contents of Y. Divides the 16-bit data in M(zz+(X)) (low-order byte) and M(zz+(X)+1) (high-order byte) by the contents of A. The quotient is stored in A and the one's complement of the remainder is pushed onto the stack. When T = 0, this instruction transfers the contents of the M and A to the ALU which performs a bit-wise Exclusive OR, and stores the result in A. When T = 1, the contents of M(X) and M are transferred to the ALU, which performs a bitwise Exclusive OR and stores the results in M(X). The contents of A remain unchanged, but status flags are changed. M(X) represents the contents of memory where is indicated by X. This instruction adds one to the contents of A or M. This instruction adds one to the contents of X. E8 2 C8 2 1 49 2 2 45 3 2 88 2 IMM # OP n 1 A # OP n BIT, A # OP n ZP # OP n BIT, ZP # OP n # ZP, X OP n ZP, Y # OP n ABS # OP n ABS, X # OP n
Addressing mode ABS, Y IND ZP, IND # OP n IND, X IND, Y REL SP # OP n # 7
Processor status register 6 V * 5 T * 4 B * 3 D * 2 I * 1 Z Z 0 C *
# OP n
# OP n
# OP n
# OP n
# OP n
N N
DEY
1
N
*
*
*
*
*
Z
*
DIV
E2 16 2
*
*
*
*
*
*
*
*
EOR (Note 1)
55 4
2
4D 4
3 5D 5
3 59 5
3
41 6
2 51 6
2
N
*
*
*
*
*
Z
*
INC
A A + 1 or MM+1 XX+1 YY+1 If addressing mode is ABS PCL ADL PCH ADH If addressing mode is IND PCL M (ADH, ADL) PCH M (ADH, ADL + 1) If addressing mode is ZP, IND PCL M(00, ADL) PCH M(00, ADL + 1) M(S) PCH SS-1 M(S) PCL SS-1 After executing the above, if addressing mode is ABS, PCL ADL PCH ADH if addressing mode is SP, PCL ADL PCH FF If addressing mode is ZP, IND, PCL M(00, ADL) PCH M(00, ADL + 1) When T = 0 AM When T = 1 M(X) M
3A 2
1
E6 5
2
F6 6
2
EE 6
3 FE 7
3
N
*
*
*
*
*
Z
*
INX
N
*
*
*
*
*
Z
*
INY JMP
This instruction adds one to the contents of Y. This instruction jumps to the address designated by the following three addressing modes: Absolute Indirect Absolute Zero Page Indirect Absolute
1 4C 3 3 6C 5 3 B2 4 2
N *
* *
* *
* *
* *
* *
Z *
* *
JSR
This instruction stores the contents of the PC in the stack, then jumps to the address designated by the following addressing modes: Absolute Special Page Zero Page Indirect Absolute
20 6
3
02 7
2
22 5
2
*
*
*
*
*
*
*
*
LDA (Note 2)
When T = 0, this instruction transfers the contents of M to A. When T = 1, this instruction transfers the contents of M to (M(X)). The contents of A remain unchanged, but status flags are changed. M(X) represents the contents of memory where is indicated by X. This instruction loads the immediate value in M. This instruction loads the contents of M in X. This instruction loads the contents of M in Y.
A9 2
2
A5 3
2
B5 4
2
AD 4
3 BD 5
3 B9 5
3
A1 6
2 B1 6
2
N
*
*
*
*
*
Z
*
LDM
M nn XM YM
3C 4
3 B6 4 B4 4 2 2 AE 4 AC 4 3 3 BC 5 3 BE 5 3
*
*
*
*
*
*
*
*
LDX LDY
A2 2 A0 2
2 2
A6 3 A4 3
2 2
N N
* *
* *
* *
* *
* *
Z Z
* *
Rev.2.00 Oct 15, 2006 REJ09B0338-0200
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Rev.2.00 Oct 15, 2006 REJ09B0338-0200
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APPENDIX 38K2 Group 3.6 Machine instructions 38K2 Group
APPENDIX 3.6 Machine instructions
Addressing mode Symbol Function Details IMP OP n LSR 7 0 0 C This instruction shifts either A or M one bit to the right such that bit 7 of the result always is set to 0, and the bit 0 is stored in C. Multiplies Accumulator with the memory specified by the Zero Page X address mode and stores the high-order byte of the result on the Stack and the low-order byte in A. This instruction adds one to the PC but does EA 2 no otheroperation. When T = 0, this instruction transfers the contents of A and M to the ALU which performs a bit-wise "OR", and stores the result in A. When T = 1, this instruction transfers the contents of M(X) and the M to the ALU which performs a bit-wise OR, and stores the result in M(X). The contents of A remain unchanged, but status flags are changed. M(X) represents the contents of memory where is indicated by X. This instruction pushes the contents of A to the memory location designated by S, and decrements the contents of S by one. This instruction pushes the contents of PS to the memory location designated by S and decrements the contents of S by one. This instruction increments S by one and stores the contents of the memory designated by S in A. This instruction increments S by one and stores the contents of the memory location designated by S in PS. This instruction shifts either A or M one bit left through C. C is stored in bit 0 and bit 7 is stored in C. 48 3 1 1 09 2 2 05 3 2 IMM # OP n A # OP n 4A 2 BIT, A # OP n 1 ZP # OP n 46 5 BIT, ZP # OP n 2 # ZP, X OP n 56 6 ZP, Y # OP n 2 ABS # OP n 4E 6 ABS, X # OP n 3 5E 7
Addressing mode ABS, Y IND ZP, IND # OP n IND, X IND, Y REL SP # OP n # 7
Processor status register 6 V * 5 T * 4 B * 3 D * 2 I * 1 Z Z 0 C C
# OP n 3
# OP n
# OP n
# OP n
# OP n
N 0
MUL
M(S) * A A M(zz + X) SS-1
62 15 2
*
*
*
*
*
*
*
*
NOP
PC PC + 1 When T = 0 AAVM When T = 1 M(X) M(X) V M
*
*
*
*
*
*
*
*
ORA (Note 1)
15 4
2
0D 4
3 1D 5
3 19 5
3
01 6
2 11 6
2
N
*
*
*
*
*
Z
*
PHA
SS-1
*
*
*
*
*
*
*
*
PHP
M(S) PS SS-1 SS+1 A M(S) SS+1 PS M(S)
* 08 3 1
*
*
*
*
*
*
*
PLA
N 68 4 1
*
*
*
*
*
Z
*
PLP
28 4
1
(Value saved in stack)
ROL
7
0 C
2A 2
1
26 5
2
36 6
2
2E 6
3 3E 7
3
N
*
*
*
*
*
Z
C
ROR
7 C
0
This instruction shifts either A or M one bit right through C. C is stored in bit 7 and bit 0 is stored in C.
6A 2
1
66 5
2
76 6
2
6E 6
3 7E 7
3
N
*
*
*
*
*
Z
C
RRF
7 SS+1 PS M(S) SS+1 PCL M(S) SS+1 PCH M(S)
0
This instruction rotates 4 bits of the M content to the right.
82 8
2
*
*
*
*
*
*
*
*
RTI
This instruction increments S by one, and stores the contents of the memory location designated by S in PS. S is again incremented by one and stores the contents of the memory location designated by S in PCL. S is again incremented by one and stores the contents of memory location designated by S in PCH. This instruction increments S by one and stores the contents of the memory location d e s i g n a t e d b y S i n P C L. S i s a g a i n incremented by one and the contents of the memory location is stored in PCH. PC is incremented by 1.
(Value saved in stack) 40 6 1
RTS
SS+1 PCL M(S) SS+1 PCH M(S) (PC) (PC) + 1
* 60 6 1
*
*
*
*
*
*
*
Rev.2.00 Oct 15, 2006 REJ09B0338-0200
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APPENDIX 38K2 Group 3.6 Machine instructions 38K2 Group
APPENDIX 3.6 Machine instructions
Addressing mode Symbol Function Details IMP OP n SBC (Note 1) (Note 5) When T = 0 _ AA-M-C When T = 1 _ M(X) M(X) - M - C When T = 0, this instruction subtracts the value of M and the complement of C from A, and stores the results in A and C. When T = 1, the instruction subtracts the contents of M and the complement of C from the contents of M(X), and stores the results in M(X) and C. A remain unchanged, but status flag are changed. M(X) represents the contents of memory where is indicated by X. This instruction sets the designated bit i of A or M. This instruction sets C. 38 2 F8 2 78 2 32 2 1 IMM # OP n E9 2 A # OP n 2 BIT, A # OP n ZP # OP n E5 3 BIT, ZP # OP n 2 # ZP, X OP n F5 4 ZP, Y # OP n 2 ABS # OP n ED 4 ABS, X # OP n 3 FD 5
Addressing mode ABS, Y IND ZP, IND # OP n IND, X IND, Y REL SP # OP n # 7
Processor status register 6 V V 5 T * 4 B * 3 D * 2 I * 1 Z Z 0 C C
# OP n 3 F9 5
# OP n 3
# OP n E1 6
# OP n 2 F1 6
# OP n 2
N N
SEB
Ai or Mi 1 C1 D1 I1 T1 MA
0B 2 + 20i
1
0F 5 + 20i
2
*
*
*
*
*
*
*
*
SEC
*
*
*
*
*
*
*
1
SED
This instruction set D.
1
*
*
*
*
1
*
*
*
SEI
This instruction set I.
1
*
*
*
*
*
1
*
*
SET
This instruction set T.
1 85 4 2 95 5 2 8D 5 3 9D 6 3 99 6 3 81 7 2 91 7 2
*
*
1
*
*
*
*
*
STA
This instruction stores the contents of A in M. The contents of A does not change. This instruction resets the oscillation control F/ F and the oscillation stops. Reset or interrupt input is needed to wake up from this mode. 42 2 1
*
*
*
*
*
*
*
*
STP
*
*
*
*
*
*
*
*
STX
MX MY XA YA M = 0? XS AX SX AY
This instruction stores the contents of X in M. The contents of X does not change. This instruction stores the contents of Y in M. The contents of Y does not change. This instruction stores the contents of A in X. AA 2 The contents of A does not change. This instruction stores the contents of A in Y. The contents of A does not change. This instruction tests whether the contents of M are "0" or not and modifies the N and Z. This instruction transfers the contents of S in BA 2 X. This instruction stores the contents of X in A. 8A 2 1 A8 2 1
86 4
2
96 5 94 5 2
2 8E 5
3
*
*
*
*
*
*
*
*
STY
84 4
2
8C 5
3
*
*
*
*
*
*
*
*
TAX
N
*
*
*
*
*
Z
*
TAY
1 64 3 2
N
*
*
*
*
*
Z
*
TST
N
*
*
*
*
*
Z
*
TSX
N
*
*
*
*
*
Z
*
TXA
1
N
*
*
*
*
*
Z
*
TXS
This instruction stores the contents of X in S.
9A 2
1
*
*
*
*
*
*
*
*
TYA
This instruction stores the contents of Y in A.
98 2
1
N
*
*
*
*
*
Z
*
WIT
The WIT instruction stops the internal clock but not the oscillation of the oscillation circuit is not stopped. CPU starts its function after the Timer X over flows (comes to the terminal count). All registers or internal memory contents except Timer X will not change during this mode. (Of course needs VDD).
C2 2
1
*
*
*
*
*
*
*
*
Notes 1 2 3 4 5
: : : : :
The number of cycles "n" is increased by 3 when T is 1. The number of cycles "n" is increased by 2 when T is 1. The number of cycles "n" is increased by 1 when T is 1. The number of cycles "n" is increased by 2 when branching has occurred. N, V, and Z flags are invalid in decimal operation mode.
Rev.2.00 Oct 15, 2006 REJ09B0338-0200
page 94 of 99
Rev.2.00 Oct 15, 2006 REJ09B0338-0200
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APPENDIX 38K2 Group 3.6 Machine instructions
Symbol IMP IMM A BIT, A BIT, A, R ZP BIT, ZP BIT, ZP, R ZP, X ZP, Y ABS ABS, X ABS, Y IND ZP, IND IND, X IND, Y REL SP C Z I D B T V N
Contents Implied addressing mode Immediate addressing mode Accumulator or Accumulator addressing mode Accumulator bit addressing mode Accumulator bit relative addressing mode Zero page addressing mode Zero page bit addressing mode Zero page bit relative addressing mode Zero page X addressing mode Zero page Y addressing mode Absolute addressing mode Absolute X addressing mode Absolute Y addressing mode Indirect absolute addressing mode Zero page indirect absolute addressing mode Indirect X addressing mode Indirect Y addressing mode Relative addressing mode Special page addressing mode Carry flag Zero flag Interrupt disable flag Decimal mode flag Break flag X-modified arithmetic mode flag Overflow flag Negative flag + - / V V - V - X Y S PC PS PCH PCL ADH ADL FF nn zz M
Symbol
Contents Addition Subtraction Multiplication Division Logical OR Logical AND Logical exclusive OR Negation Shows direction of data flow Index register X Index register Y Stack pointer Program counter Processor status register 8 high-order bits of program counter 8 low-order bits of program counter 8 high-order bits of address 8 low-order bits of address FF in Hexadecimal notation Immediate value Zero page address Memory specified by address designation of any addressing mode Memory of address indicated by contents of index register X Memory of address indicated by contents of stack pointer Contents of memory at address indicated by ADH and ADL, in ADH is 8 high-order bits and ADL is 8 low-order bits. Contents of address indicated by zero page ADL Bit i (i = 0 to 7) of accumulator Bit i (i = 0 to 7) of memory Opcode Number of cycles Number of bytes
M(X) M(S) M(ADH, ADL)
M(00, ADL) Ai Mi OP n #
Rev.2.00 Oct 15, 2006 REJ09B0338-0200
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APPENDIX 38K2 Group 3.7 List of instruction code
3.7 List of instruction code
D3 - D0 Hexadecimal notation 0 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111
D7 - D4
0
1
2
3
4
5 ORA ZP ORA ZP, X AND ZP AND ZP, X EOR ZP EOR ZP, X ADC ZP ADC ZP, X STA ZP STA ZP, X LDA ZP LDA ZP, X CMP ZP CMP ZP, X SBC ZP SBC ZP, X
6 ASL ZP ASL ZP, X ROL ZP ROL ZP, X LSR ZP LSR ZP, X ROR ZP ROR ZP, X STX ZP STX ZP, Y LDX ZP LDX ZP, Y DEC ZP DEC ZP, X INC ZP INC ZP, X
7 BBS 0, ZP BBC 0, ZP BBS 1, ZP BBC 1, ZP BBS 2, ZP BBC 2, ZP BBS 3, ZP BBC 3, ZP BBS 4, ZP BBC 4, ZP BBS 5, ZP BBC 5, ZP BBS 6, ZP BBC 6, ZP BBS 7, ZP BBC 7, ZP
8
9 ORA IMM ORA ABS, Y AND IMM AND ABS, Y EOR IMM EOR ABS, Y ADC IMM ADC ABS, Y -- STA ABS, Y LDA IMM LDA ABS, Y CMP IMM CMP ABS, Y SBC IMM SBC ABS, Y
A ASL A DEC A ROL A INC A LSR A -- ROR A --
B SEB 0, A CLB 0, A SEB 1, A CLB 1, A SEB 2, A CLB 2, A SEB 3, A CLB 3, A SEB 4, A CLB 4, A SEB 5, A CLB 5, A SEB 6, A CLB 6, A SEB 7, A CLB 7, A
C
D ORA ABS
E ASL ABS
F SEB 0, ZP
0000
BRK
BBS ORA JSR IND, X ZP, IND 0, A ORA IND, Y AND IND, X AND IND, Y EOR IND, X EOR IND, Y CLT JSR SP SET BBC 0, A BBS 1, A BBC 1, A BBS 2, A BBC 2, A BBS 3, A BBC 3, A BBS 4, A BBC 4, A BBS 5, A
--
PHP
--
0001
1
BPL JSR ABS BMI
-- BIT ZP -- COM ZP -- TST ZP -- STY ZP STY ZP, X LDY ZP LDY ZP, X CPY ZP -- CPX ZP --
CLC
-- BIT ABS
ASL CLB ORA ABS, X ABS, X 0, ZP AND ABS ROL ABS SEB 1, ZP
0010
2
PLP
0011
3
SEC
ROL CLB LDM AND ZP ABS, X ABS, X 1, ZP JMP ABS -- JMP IND -- STY ABS -- LDY ABS EOR ABS LSR ABS SEB 2, ZP
0100
4
RTI
STP
PHA
0101
5
BVC
--
CLI
LSR CLB EOR ABS, X ABS, X 2, ZP ADC ABS ROR ABS SEB 3, ZP
0110
6
RTS
MUL ADC IND, X ZP, X ADC IND, Y STA IND, X STA IND, Y LDA IND, X -- RRF ZP -- LDX IMM
PLA
0111
7
BVS
SEI
ROR CLB ADC ABS, X ABS, X 3, ZP STA ABS STA ABS, X LDA ABS STX ABS -- LDX ABS SEB 4, ZP CLB 4, ZP SEB 5, ZP
1000
8
BRA
DEY
TXA
1001
9
BCC LDY IMM BCS CPY IMM BNE CPX IMM BEQ
TYA
TXS
1010
A
TAY
TAX
1011
B
JMP BBC LDA IND, Y ZP, IND 5, A CMP IND, X CMP IND, Y WIT BBS 6, A BBC 6, A BBS 7, A BBC 7, A
CLV
TSX
LDX CLB LDY LDA ABS, X ABS, X ABS, Y 5, ZP CPY ABS -- CPX ABS -- CMP ABS DEC ABS SEB 6, ZP
1100
C
INY
DEX
1101
D
--
CLD
--
DEC CLB CMP ABS, X ABS, X 6, ZP SBC ABS INC ABS SEB 7, ZP
1110
E
DIV SBC IND, X ZP, X SBC IND, Y --
INX
NOP
1111
F
SED
--
INC CLB SBC ABS, X ABS, X 7, ZP
: 3-byte instruction : 2-byte instruction : 1-byte instruction
Rev.2.00 Oct 15, 2006 REJ09B0338-0200
page 97 of 99
APPENDIX 38K2 Group 3.8 SFR memory map
3.8 SFR memory map
000016 Port P0 (P0) 000116 Port P0 direction register (P0D) 000216 Port P1 (P1) 000316 Port P1 direction register (P1D) 000416 Port P2 (P2) 000516 Port P2 direction register (P2D) 000616 Port P3 (P3) 000716 Port P3 direction register (P3D) 000816 Port P4 (P4) 000916 Port P4 direction register (P4D) 000A16 Port P5 (P5) 000B16 Port P5 direction register (P5D) 000C16 Port P6 (P6) 000D16 Port P6 direction register (P6D) 000E16 Reserved (Note) 000F16 Reserved (Note) 001016 USB control register (USBCON) 001116 USB function/Hub enable register (USBAE) 001216 USB function address register (USBA0) 001316 USB HUB address register (USBA1) 001416 Frame number register Low (FNUML) 001516 Frame number register High (FNUMH) 001616 USB interrupt source enable register (USBICON) 001716 USB interrupt source register (USBIREQ) 001816 Endpoint index register (USBINDEX) 001916 Endpoint field register 1 (EPXXREG1) 001A16 Endpoint field register 2 (EPXXREG2) 001B16 Endpoint field register 3 (EPXXREG3) 001C16 Endpoint field register 4 (EPXXREG4) 001D16 Endpoint field register 5 (EPXXREG5) 001E16 Endpoint field register 6 (EPXXREG6) 001F16 Endpoint field register 7 (EPXXREG7)
002016 Prescaler 12 (PRE12) 002116 Timer 1 (T1) 002216 Timer 2 (T2) 002316 Timer X mode register (TM) 002416 Prescaler X (PREX) 002516 Timer X (TX) 002616 Transmit/Receive buffer register (TB/RB) 002716 Serial I/O status register (SIOSTS) 002816 HUB interrupt source enable register (HUBICON) 002916 HUB interrupt source register (HUBIREQ) 002A16 HUB down stream port index register (HUBINDEX) 002B16 HUB port field register 1 (DPXREG1) 002C16 HUB port field register 2 (DPXREG2) 002D16 HUB port field register 3 (DPXREG3) 002E16 Reserved (Note) 002F16 Reserved (Note) 003016 EXB interrupt source enable register (EXBICON) 003116 EXB interrupt source register (EXBIREQ) 003216 Reserved (Note) 003316 EXB index register (EXBINDEX) 003416 Register window 1 (EXBREG1) 003516 Register window 2 (EXBREG2) 003616 AD control register (ADCON) 003716 AD conversion register 1 (AD1) 003816 AD conversion register 2 (AD2) 003916 Watchdog timer control register (WDTCON) 003A16 Reserved (Note) 003B16 CPU mode register (CPUM) 003C16 Interrupt request register 1(IREQ1) 003D16 Interrupt request register 2(IREQ2) 003E16 Interrupt control register 1(ICON1) 003F16 Interrupt control register 2(ICON2)
0FE016 Serial I/O control register (SIOCON) 0FE116 UART control register (UARTCON) 0FE216 Baud rate generator (BRG) 0FE316 Reserved (Note) 0FE416 Reserved (Note) 0FE516 Reserved (Note) 0FE616 Reserved (Note) 0FE716 Reserved (Note) 0FE816 Reserved (Note) 0FE916 Reserved (Note) 0FEA16 Reserved (Note) 0FEB16 Reserved (Note) 0FEC16 Endpoint field register 8 (EPXXREG8) 0FED16 Endpoint field register 9 (EPXXREG9) 0FEE16 Reserved (Note) 0FEF16 Reserved (Note)
0FF016 Port P0 pull-up control register (PULL0) 0FF116 Reserved (Note) 0FF216 Port P5 pull-up control register (PULL5) 0FF316 Interrupt edge selection register (INTEDGE) 0FF416 Reserved (Note) 0FF516 Reserved (Note) 0FF616 Reserved (Note) 0FF716 Reserved (Note) 0FF816 PLL control register (PLLCON) 0FF916 Downstream port control register (DPCTL) 0FFA16 Reserved (Note) 0FFB16 MISRG 0FFC16 Reserved (Note) 0FFD16 Reserved (Note) 0FFE16 Flash memory control register (FMCR) 0FFF16 Reserved (Note)
Note: Do not write any data to these addresses, because these areas are reserved.
Rev.2.00 Oct 15, 2006 REJ09B0338-0200
page 98 of 99
APPENDIX 38K2 Group 3.9 Pin configurations
3.9 Pin configurations
47
48
46
45
44
43
35
34
41
42
P06 P07 P40/EXDREQ/RXD P41/EXDACK/TXD P42/EXTC/SCLK P43/EXA1/SRDY P30 P31 P32 P33/EXINT P34/EXCS P35/EXWR P36/EXRD P37/EXA0 P10/DQ0/AN0 P11/DQ1/AN1
40
39
38
37
36
33
P05 P04 P03 P02 P01 P00 P57 P56 P55 P54 P53 P52/INT1 P51/CNTR0 P50/INT0 P27 P26
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
M38K27M4L-XXXFP/HP
M38K29F8LFP/HP
P25 P24 D2+ D2D1+ D1D0D0+ TrON USBVREF DVCC PVCC PVSS P63(LED3) P62(LED2) P61(LED1)
10
11
12
13
P12/DQ2/AN2 P13/DQ3/AN3 P14/DQ4/AN4 P15/DQ5/AN5 P16/DQ6/AN6 P17/DQ7/AN7 CNVSS RESET
VCCE VREF VSS
XIN XOUT
14
15
Rev.2.00 Oct 15, 2006 REJ09B0338-0200
page 99 of 99
P60(LED0)
VCC CNVSS2
16
2
3
4
5
6
7
8
1
9
REVISION HISTORY
Rev. 1.0 2.0 Date Page 2/13/03 10/15/06 First Edition
38K2 GROUP USER'S MANUAL
Description Summary
All pages Package names "64P6U-A" "PLQP0064GA-A" revised Package names "64P6Q-A" "PLQP0064KB-A" revised 38K2 group (Standard) deleted Chapter 1 94 Fig. 137 revised 97 CLOCK GENERATING CIRCUIT; "No external resistor is needed .... resistor exists on-chip." "No external resistor is needed .... depending on conditions.) 98 Fig. 141; Pulled up added, NOTE added Fig. 144 revised 128 NOTES ON USAGE; Power Source Voltage, USB Communication added Chapter 2 3 Fig. 2.1.3; "Do not set bits of .... If writing to these bits, write "0"." added Chapter 3 20 35 48 92, 93
3.2 deleted 3.3.6 (3) USB Communication added Fig. 3.5.2; "Do not set bits of .... If writing to these bits, write "0"." added 3.6 Package outline revised
(1/1)
RENESAS 8-BIT SINGLE-CHIP MICROCOMPUTER USER'S MANUAL 38K2 Group Publication Data : Published by : Rev.1.00 Feb 13, 2003 Rev.2.00 Oct 15, 2006 Sales Strategic Planning Div. Renesas Technology Corp.
(c) 2006. Renesas Technology Corp., All rights reserved. Printed in Japan.
38K2 Group User's Manual
2-6-2, Ote-machi, Chiyoda-ku, Tokyo, 100-0004, Japan

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