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Z8615 CPS DC-4143-05
CUSTOMERPROCUREMENTSPECIFICATION
Z8615
NMOSZ8(R)8-BITMCU KEYBOARDCONTROLLER
DESCRIPTION
The Z8615 Keyboard Controller (KBC) is a member of the Z8(R) single-chip microcontroller family with 4 Kbytes of ROM. The device is housed in a 40-pin DIP and 44-pin PLCC package, and is manufactured in NMOS technology. The Z8615 KBC microcontroller offers fast execution, efficient use of memory, sophisticated interrupt, input/ output bit-manipulation capabilities, and easy hardware/ software system expansion along with low cost and low power consumption. The Z8615 KBC architecture is characterized by a flexible I/O scheme, an efficient register, I/O, and a number of ancillary features that are useful in many industrial and advanced scientific applications. For applications which demand powerful I/O capabilities, the KBC provides 32 pins dedicated to input and output. These lines are grouped into four ports, each port consists of 8 lines, and are configurable under software control to provide timing, status signals, and serial or parallel I/O ports. The Z8615 KBC offers low EMI emission which is achieved by means of several modifications in the output drivers and clock circuitry of the device. There are two basic address spaces which are available to support this wide range of configurations: Program Memory and 124 General-Purpose Registers. The Z8615 KBC offers two on-chip counter/timers with a large number of user-selectable modes. This unburdens the program from coping with real-time problems such as counting/timing (Block Diagram).
Notes: All Signals with a preceding front slash, "/", are active Low, e.g., B//W (WORD is active Low); /B/W (BYTE is active Low, only). Power connections follow conventional descriptions below: Connection Power Ground Circuit VCC GND Device VDD VSS
DC-4143-05
(5-13-94)
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Z8615 CPS DC-4143-05
GENERAL DESCRIPTION (Continued)
Output Input
Vcc
GND
XTAL1 XTAL2 /RESET /WDTOUT
Port 3
Machine Timing & Inst. Control WDT ALU POR
Flags Counter/ Timers (2) Register Pointer Interrupt Control Register File 124 x 8 Bit Program Counter Program Memory
Port 2 4 I/O (Bit Programmable)
Port 0 4
Port 1 8 I/O Output Open Drain (Byte Programmable)
I/O Output Open Drain (Nibble Programmable)
Functional Block Diagram
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Z8615 CPS DC-4143-05
PIN IDENTIFICATION
VCC XTAL2 XTAL1 P37 P30 /RESET *GND *NC /WDT OUT P35 GND P32 P00 P01 P02 P03 P04 P05 P06 P07
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Z8615
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
P36 P31 P27 P26 P25 P24 P23 P22 P21 P20 P33 P34 P17 P16 P15 P14 P13 P12 P11 P10
40-Pin Configuration
*Note: Pin 8 is connected to the chip, although used only for testing. This pin must float. Pin 7 is a test pin and must be grounded.
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Z8615 CPS DC-4143-05
PIN IDENTIFICATION (Continued)
XTAL1 XTAL2 VCC
P30
P37
P36
P31
P27
P26
6 /RESET *GND *N/C /WDTOUT P35 GND P32 P00 P01 P02 N/C 7 8 9 10 11 12 13 14 15 16 17
5
4
3
2
1 44 43 42 41 40 39 38 37 36 35 N/C P24 P23 P22 P21 P20 P33 P34 P17 P16 P15
Z8615 PLCC
P25 34 33 32 31 30 29 N/C
18 19 20 21 22 23 24 25 26 27 28 P03 P04 P05 P06 P07 P10 P12 P13 P14 P11
Note: * Pin 9 is connected to the chip, although used only for testing. This pin must float. Pin 8 is a test pin and must be grounded.
N/C 4
44-Pin PLCC Pin Assignments
Z8615 CPS DC-4143-05
ABSOLUTE MAXIMUM RATINGS
Symbol VCC TSTG TA Description Supply Voltage* Storage Temp Oper Ambient Temp Min -0.3 -65 Max +7.0 +150 Units V C Stresses greater than those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; operation of the device at any condition above those indicated in the operational sections of these specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Notes: * Voltage on all pins with respect to GND. See ordering information
STANDARD TEST CONDITIONS
The characteristics listed here apply for standard test conditions as noted. All voltages are referenced to GND. Positive current flows into the referenced pin (Test Load).
From Output Under T est
150 pF
Test Load Diagram
STANDARD TEST CONDITIONS TA = 25C, VCC = GND = 0V, f = 1.0 MHz, unmeasured pins returned to ground.
Parameter Input capacitance Output capacitance I/O capacitance Max 12 pF 12 pF 12 pF
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Z8615 CPS DC-4143-05
DC CHARACTERISTICS VCC = 4.75V to 5.25V @ 0C to -55C
Sym VCH VCL VIH VIL VRH VRL VOH VOL IIL IOL IIR IR1 IR2 ICC WDT Parameter Clock Input High Voltage Clock Input Low Voltage Input High Voltage Input Low Voltage Reset Input High Voltage Reset Input Low Voltage Output High Voltage Output High Voltage Output Low Voltage Input Leakage Output Leakage Reset Input Current Input Current Input Current VCC Supply Current Watch-Dog Timer Min 3.8 -0.3 2.0 -0.3 3.8 -0.3 2.0 2.4 -10 -10 -335 -335 -1.6 Max VCC 0.8 VCC 0.8 VCC 0.8 Typ* Unit V V V V V V V V V A A -477 A A mA mA mA VOL=0.4 Volt Condition Driven by External Clock Generator Driven by External Clock Generator
IOH = -250 A (Port 2 only) IOH = -250 A (Port 3 only) IOL = 10.0 mA (See note [1] below.) VIN = 0V, 5.25V (See note [3] below.) VIN = 0V, 5.25V (See note [2] below.) VIN = 0V Pull-up resistor=10.4 Kohms, V IN=0.0V Pull-up resistor = 2.4 Kohms, V IN=0.0V
0.8 10 10 -775 -775 -2.9 150 2.0
Notes: * Typical @ 25C [1] Ports P37-P34 may be used to sink 12 mA at 2.8V. These may be used for LEDs or as general-purpose outputs requiring high sink current. [2] P00-P07, P10-P17, P20-P25, P30-P33 as output mode open-drain as a logic one. [3] P04-P07, P10-P17, P20-P23, P30-P33 as input mode.
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Z8615 CPS DC-4143-05
TOLERANCE VALUES
The Z8615 provides internal pull-up resistors. Tolerances for these resistors consists of the following: Resistor 2.4K 10.4K Tolerance 25% 35% The RC Oscillator option provided on the Z8615 requires an external 1% precision resistor. Tolerance for the oscillator consists of the following: Frequency: Tolerance: 4 MHz to 5 MHz + 10%, - 10%
Note: 1) All Characteristics stated above are specified according to the following: VCC = 4.75 to 5.25 Temperature = 15C to 55C 2) To measure the RC oscillator's frequency, use only a highimpedance probe (10 Mohms, 2 pf) to probe XTAL2 (Pin 2). Other probes with higher capacitance loading can create strong ground bounces which shift the frequency reading at XTAL2. Also, do not probe XTAL1 when measuring the RC frequency. Refer to the procedure for Test Conditions and Methodology. 3) To measure the POR delay, apply a square wave (amplitude = 4 volts, frequency ~ .5 Hertz) to RESET (Pin 6) then measure the time it takes for Data Strobe (Pin 8) to go high after RESET goes high. Refer to the procedure for Test Conditions and Methodology.
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Z8615 CPS DC-4143-05
TEST CONDITIONS AND METHODOLOGY
1. Title: Z08615CA Procedure. UTB Frequency-POR Measurement 6.2 During frequency measurement, oscillator input (Pin 3) should not be probed. The internal circuitry requires that the external impedance on this node be purely resistive. This is why the input of the oscillator (Pin 3) is very sensitive to external loading, then the frequency of the oscillator will be unstable due to resonance (of loading) excited by external, as well as internal noise. To make a frequency reading, connect the scope probe only to the oscillator out (Pin 2). Even though this output is well buffered from the oscillator, loading on this node will affect the period of oscillation. So use a high-impedance probe to measure the frequency at this node. The highimpedance probe serves to minimize waveform distortion. 6.3 Be consistent in the reading times, e.g., allow the unit two minutes to warm up before making the frequency reading. Apply this timing on all parts tested. Erratic readings will result if the unit's temperature is not stabilized. 7. Frequency Measurement: 7.1 Solder a half-centimeter piece of wire to the UTB at the oscillator out (Pin 2), then hook the probe to the wire. Also solder a lesser-than 4" wire to the device ground (Pin 11), then clip the counter ground to this. To begin measurement, connect a 5 volt power supply to the UTB. Even though this output is well buffered from the oscillator, loading on this node will affect THE FREQUENCY READOUTS ON THE FREQUENCY COUNTER. So use the high-impedance probe to properly read the frequency on the oscillator out. 7.2 Set the temperature forcing unit (at 25C) directly above the device. Before taking a reading, give the part two minutes after power-on to stabilize under a controlled ambient temperature. Then take the reading at that instant. Note, if this timing is not kept consistent from reading to reading, the frequency reading of a given part can vary as much as 5% relative to the center frequency. If a part is still warm from previous measurement, give it a minute or two to cool to room temperature before making another measurement. Here, consistency in cooling time is also important to minimize drifts in the readings. This drift is caused by the accumulation of head from the immediate runs.
2. Objective: To provide instructions for making frequency and POR measurements. 3. Scope: All products containing on-board RC oscillator. 4. Applicable Documents: 4.1 Instruction manuals for H-P 8012B Pulse Generator, H-P 1661A Logic Analyzer, Tektronix DC 503A Universal Counter/Timer. 4.2 Data Sheet for device under test. 5. Equipment, Materials, and Supplies: 5.1 One UTB (agreed upon by customer). 5.2 One DIN-5 (female) connector or PC (IBM(R) or clone) to power the keyboard. 5.3 H-P 8012B Pulse Generator. 5.4 H-P 1661A Logic Analyzer. 5.5 Tektronix DC 503A Universal Counter/Timer and Tektronix P6202A DC to 500 MHz 10 meg-2 pico probe. 5.6 H-P 6115A Precision Power Supply. 5.7 A temperature forcing unit (Temptronic Corporation), or equivalent. 5.8 Golden correlation units. 6. Important Notes: 6.1 The oscillator input/output is sensitive to external loading, e.g., stray capacitance or inductance. When making frequency measurement, make sure the meter probe is on the oscillator output (Pin 2) only (as close as possible). Any slight loading on the oscillator input (Pin 3) will cause drastic changes to the oscillator frequency. Therefore, it is recommended that the RC resistor be connected as close as possible to the oscillator input (Pin 3); and that nothing is hanging on the oscillator input.
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Z8615 CPS DC-4143-05
TEST CONDITIONS AND METHODOLOGY
7.3 A socket can be soldered into the keyboard to expedite measurements of different units. But initial correlation of how much shift (relative to directly soldering) the socket induces must be done on a reference unit. It is desireable to use a unit that operates at the center of the frequency range when directly soldered on the UTB. 8. Analyzer Set-Up for Timing Measurements: 8.1 In order for the analyzer to work, the analyzer channels must first be defined/formatted. To begin this process, depress the button, then perform the following sequence: 1. Move the cursor down to the last position on the left of LABEL, then depress . 4. Move the cursor to the right until the cursor is located on the desired channel number, then depress . 5. To define another channel, repeat the sequence. 8.2 To properly get the analyzer to display, a trigger edge needs to be defined. To do this, depress , then continue the following sequence. 1. If the analyzer is just powered-up, this menu will indicate that trigger edge "a" is selected. Move the cursor down to label "a," then depress , type "1," then depress . 3. Move the cursor to the right beneath POR (another signal which goes low when RESET goes low and goes high ~ 120 ms after RESET goes high), depress . 2. Select the signal to display by moving the cursor up/down the list of defined signals. Once the desired signal is highlighted, press . 3. To start the display, move the cursor to the RUN option (upper right corner of the screen), then depress

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