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Silan Semiconductors
INFRARED REMOTE CONTROL TRANSMITTER
DESCRIPTION
SC3010 is a remote control transmitter utilizing CMOS Technology specially designed for use on general purpose (RC-5) infrared applications with low voltage supply and large debounce time. SC3010 supports 32 systems. Each system has a maximum of 64 commands; thus, SC3010 can provide up to a total of 2,048 commands.
SC3010
SOP-28
FEATURES
* CMOS Technology * Low Voltage Supply * Supports up to 32 systems * Single Pin Oscillator * Bi-phase Transmission Technique * Provides 2,048 Commands
DIP-28
APPLICATIONS
* Television * VCR * Audio Equipment * Multi-Media System * Personal Computer
ORDERING INFORMATION
SC3010 SC3010S DIP-28 Package SOP-28 Package
PIN CONFIGURATIONS
KI7 SMS C0 C1 C2 C3 MDOUT DOUT KO7 1 2 3 4 5 6 7 8 9 28 VDD 27 KI6 26 KI5 25 KI4 24 KI3 23 KI2
SC3010
22 KI1 21 KI0 20 T1 19 T2 18 OSC 17 KO0 16 KO1 15 KO2
KO6 10 KO5 11 KO4 12 KO3 13 VSS 14
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.1 2002-02-28
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BLOCK DIAGRAM
OSC T1 T2 SMS C3 C2 C1 C0 KI7 KI6 KI5 KI4 KI3 KI2 KI1 KI0
SC3010
18 20 19 2 6 5 4 3 1 27 26 25 24 23 22 21
OSC Test Mode Select
Master Reset Generator Decoder Control Unit Divider
Mode Selection
17
Command and System Address Latch Keyboard Driver Decoder
KO0 KO1 KO2 KO3 KO4 KO5 KO6 KO7
16 15 13 12 11 10 9
Keyboard Encoder Parallel to Serial converter
Output
8
7
14
Vss
28
VDD
DOUT MDOUT
ABSOLUTE MAXIMUM RATING (Tamb=25C, unless otherwise specified)
Characteristic
Supply Voltage* Input Voltage* Output Voltage* Operating Temperature NOTE: * = with reference to Vss
Symbol
VDD VIN VOUT TOPR
Test conditions
VDD=3 V VDD=3 V VDD=3 V
Value
VSS -0.3 ~ 5.5 -0.5 ~ VDD+0.5 -0.5 ~ VDD+0.5 -20~85
Unit
V V V C
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Rev: 2.1 2002-02-28
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Parameter
Supply Voltage Stand-By Current Input Current(KI0~KI7,C0~C3) High Level Input Voltage (KI0~KI7,C0~C3,SMS,T1,T2) Low Level Input Voltage (KI0~KI7,C0~C3,SMS,T1,T2) Input Current Leakage (KI0~KI7,C0~C3) Input Current Leakage (OSC) Input Leakage Current (SMS,T1,T2) High Level Output Voltage (Dout, MDOUT) Low Level Output Voltage (Dout, MDOUT) Output Current Leakage (Dout, MDOUT) Low Level Output Voltage (KO0~KO7) Output Current Leakage (KO0~KO7) Drive Current (Dout, MDout) Operational Frequency Free-Running Frequency
SC3010
Test conditions Min Typ
3.0 0 15
ELECTRICAL CHARACTERISTICS (Tamb=25C, unless otherwise specified)
Symbol
VDD IDD IIN VIH VIL ILEAK1 ILEAK2 ILEAK3 ILEAK4 VOH VOL ILEAK5 VOL ILEAK6 ID Fosc1 Fosc2
Max
5.5 10 600
Unit
V A A V
Freq=455KHz 2.0 VDD =3V (Output no load) VI=0V T1=0 T2=0 SMS=0 VDD =3V,(KI0~KI7 And 0.7 VDD C0~C3 Connected To VDD) VDD =3V ,( T1,T2,OSC,SMS Connected To VSS) VI=3V VDD=3V T1=T2=High VI=0V VDD=3V T1=T2=High VI=0V VDD=3V T1=T2=High VI=3V VDD=3V T1=T2=High 4.5 VI=3V VDD=3V T=25C VI=0V VDD=3V T=25C VDDVDD=3V IOH=0.4mA 0.3 VDD=3V IOH=0.6mA Vo=3V VDD=3V T=25C Vo=0V VDD=3V T=25C VDD=3V IOL=0.3mA Vo=3V VDD=3V T=25C Vo=3V VDD=3V T=-25~85C VDD=3V Vo=1.5V VDD=3V VDD=3V
0.3 VDD 0 0 0 15 0 0 1.0 1.0 1.0 30 1.0 1.0
V A A A
V 0.35 10 1 0.8 0 3 1 10 2 600 100 A V A mA KHz KHz
1.5 400 50
PIN DESCRIPTION
Pin No.
1 2 3~6 7 8 9~13 14 15~17 18 19 20 21~27 28
Symbol
KI7 SMS C0~C3 MDOUT DOUT KO7~KO3 VSS KO2~KO0 OSC T2 T1 KI0~KI6 VDD
I/O
IP I IP O O OD Power OD I I I IP Power
Description
Key Sense Input Pin System Mode Selection Input Pin Key Sense Input Pins Generated Output Data Pin modulated with 1/12 oscillator frequency at a 25% duty factor Generated Output Data Pin Scan Driver Pins Negative Power Supply Scan Driver Pins Oscillator Input Pin Test Pin 2 Test Pin 1 Key Sense Input Pins Positive Power Supply
NOTE
IP= Input with p-channel pull-up transistor; OD = Output with open drain n-channel transistor
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.1 2002-02-28
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FUNCTIONAL DESCRIPTION
1. KEY INPUT OPERATION
SC3010
A Key Input Operation may be considered legal or illegal depending on the keys pressed. For key interconnection refer to the application circuit diagram in APPLICATION CIRCUIT SECTION. The maximum value of the switched key contact series resistance is 7k. a). Legal Key Input A legal key input operation enables the device to activate the corresponding codes. A key input operation is considered as legal if it is 1). a connection of one K-Input (KI0~KI7) to one K-Output (KO0~KO7), or 2).a connection of one C-Input(C0~C3) to one K-Output (KO0~KO7) when the System Mode Selection (SMS) Pin is in a LOW state. If the SMS is in a HIGH state, then a wired connection must be made between a C-Input to a K-Output in order to generate the system number. For connections consisting of one K-Input or C-Input to more than one K-Output Pins, the last scan signal is recognized as LEGAL. b). Illegal Key Input An illegal key input operation does not produce any activity. No activity will be generated if 1) two or more KInput/C-Input Pins or 2) C-Input and K-Input Pins are activated simultaneously. The oscillator will not start. Thus, this operation is considered as ILLEGAL.
2. INPUTS: KI0~KI7 & C0~C3 In the quiescent state, the command inputs KI0~KI7 are pulled HIGH by an internal pull-up transistor. Also if the system is quiescent and the System Mode Selection Input (SMS) is in High state so that current flow may be prevented. A wired connection in the C-KO Matrix provides 32 systems.
3. DATA OUTPUT
One Code MSB LSB MSB LSB
Debounce Time Scan Start Bit (16-Bit Time) Time Control (2-Bit Time) Bit
System Bits
Command Bits
First Code Repetition Time
Second Code
Where: debounce time+ scan time=18 bit-times, Repetition time=4x16 bit-times Figure 1: Data Output Format
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SC3010
The generated information is transmitted through the output signal DOUT. The Data Output Code consists of 1.5 Start Bits (2xLogic 1), 1 Control Bit, 5 System Bits, and 6 Command Bits. Please refer to the diagram above for the data output format. (See also Command and System Matrixes). After a legal key operation is performed, the KO outputs are switched off and a 16-bit debounce time period is experienced followed by a 2-bit scan cycle time. During the scanning cycle the outputs are switched to the conductive state one at a time. Code is transmitted using a biphase technique. Please refer to the diagram below. The MDOUT Output Signal transmits the generated data modulated by 1/12 of the oscillator frequency with a 25% duty factor.
Logic 1
8
Logic 0
where: 1 bit-time=3x2 xTosc=1.688ms (typ. Tosc=1/455KHz) Figure 2: Biphase Code Transmission Technique Both the DOUT and the MDOUT are non-conducting (3-state outputs) when in the quiescent state. The Scan Driver Outputs (KO0~KO7) are open drain n-channel and conduct when the circuit is in the quiescent state.
4. SYSTEM MODES
a). Combined System Mode (SMS=Low) The KI and the C Sense Inputs have p-channel pull-up transistors (meaning they are normally in HIGH state). They are pulled to LOW state when an output is connected, to them as a result of a legal key operation. A legal key operation in the KI-KO or C-KO Matrix will initiate a debounce cycle. Once key contact has been established for 18bit time without any interruption, the Oscillator Enable Signal is latched and the key may be released. The device is reset when there is an interruption during the 18-bit time period. At the end of the debounce cycle, KO Outputs are switched off and two scan cycles begins. When KI or C Input senses a low level output, a Latch-Enable Signal is fed to the System (C-Input) or Command (KI-Input) Latches. After latching a system number, the device will generate the last command (i.e. all command bits logic 1) in the selected system for as long as the key is pressed. Latching of a command number causes the chip to generate this command together with the system number stored in the system latch. By releasing the key, the device will be reset if no data is to be transmitted at the time. The complete code frame is transmitted even if the key is released during code transmission.
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b). Single System Mode (SMS=High)
SC3010
In the Single System Mode, the KI-Sense Inputs are also pulled High by the p-channel pull-up transistors, as in the Combined System Mode. The C-Sense Inputs, however, are disabled by switching off their pull-high transistors. A system code is provided by a wired connection between the C-KO Matrix. The debounce cycle can ONLY be started by any legal key operation in the KI-KO Matrix. Once the key contact has been established for 18-bit time without any interruption, the Oscillator-Enable Signal is latched and the key may be released. Any interruption during the 18bit time period resets the internal action. At the end of the debounce cycle, the pull-up transistors in the KI-Lines are then switched off and the pull-up transistors in the C-lines are turned ON for the first scan cycle. The wired connection in the C-matrix matrix is then translated into a system number and stored in the system latch. At the end of the first scan cycle, 1) the C-Input pullup transistors are switched off and the inputs are again disabled, 2) KI-Sense Input pull-up transistors are turned on. The command number is generated by the second scan cycle. This command number is then latched and transmitted together with the system number.
5.KEY RELEASE DETECTION
An additional control bit is complemented after key release. This additional control bit tells the decoder that the next code is a new command. This feature is important in cases where more digits are needed to be inputted (i.e. Teletext channel numbers or Viewdata pages). The extra control bit will only be complemented after the completion of at least one code transmission. The scan cycles are repeated before every code transmission; thus, even with the Take Over of key operation during the code transmission, the correct system and command numbers are generated.
6.RESETTING THE DEVICE
The device will immediately reset under the following conditions: 1). A key is released during the debounce time 2). A key is released between two codes 3). During Matrix Scanning a). A key is released while one of the drivers outputs is in the low ohmic state (Logic 0) b). A key is released before that key has been detected. c). There is no wired connection in the C-KO Matrix when SMS is in High State.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
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7.OSCILLATOR
SC3010
The OSC is a 1-pin oscillator input/output terminal. The oscillator is constructed by connecting in series a ceramic resonator like TOKO CRK429.
8. TEST MODE
When T1,T2 and OSC Pins are in HIGH State, the circuit initializes. All internal nodes except for the LATCH are defined. The latch is defined when a scan cycle starts by pulling down a KI or a C Input while the oscillator is active. If the debounce cycle has been completed, then the scan cycle can be accomplished 3x2 times faster by setting the T1 to HIGH. If the scan cycle has been completed, the Latch contents can be read 3x2 times faster by setting the T2 to HIGH.
7 3
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Rev: 2.1 2002-02-28
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SC3010 COMMAND MATRIX DATA CODE
The Command Matrix Data Code is given in the table below:
SC3010
KO-Line Command Bits 5 6 7 5
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 0 0 0 0
No. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
KI-Line 0
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
1
2
3
4
5
6
7
0
*
1
2
3
4
4
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
3
0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
2
0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
1
0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
0
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
(to be continued)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
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(continued)
SC3010
KO-Line Command Bits 5 6 7 5
1 * * * * * * * 1 1 1 1 1 1 1 1 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
No. 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
KI-Line 0 1 2 3 4
* * * * * * * * * * * * * * * * *
5
6
7
0
*
1
2
3
4
4
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
3
0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
2
0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
1
0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
0
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.1 2002-02-28
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SC3010 SYSTEM MATRIX DATA CODE
The System Matrix Data Code for K-KO Lines are given in the table below:
SC3010
KO-Line System Bits 5 6 7 4
0 * * * * * * * 0 0 0 0 0 0 0 0 * * * * * * * 0 0 0 0 0 0 0 1 * * * * * * * 1 1 1 1 1 1 1 1 * * * * * * * 1 1 1 1 1 1 1
System No. 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
* * * * * * * *
C-Line 1 2 3 0
*
1
2
3
4
3
0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
2
0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
1
0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
0
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
* * * * * * * * * * * * * * * * * * * * * * * *
*
*
*
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.1 2002-02-28
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APPLICATION CIRCUIT
SC3010
17 21 22 23 24 25 26 27 1 3 4 5 6
KI0 KI1 KI2 KO0
16
KO1
15
KO2
13
KO3
12
KO4
11
KO5
10
KO6
9
KO7
VDD
28
KI3
47F
KI4 KI5 KI6 KI7 C0 C1 C2 C3
14
Vss
SC3010
MDOUT SMS
T1
T2
OSC
DOUT
7
VDD IR LED
2
20
19
18
Resonator
8
VDD 270
1
NOTE: There is a connection between the C0~C3 Lines and KO0~KO7 Lines if SMS is tied to VDD.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.1 2002-02-28
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CHIP TOPOGRAPHY
25 26 27 17 16 15 14 28 13 1 12 2 3 4 5 6 7 8
2
SC3010
24 23 22 21 20 19 18
9
10 11
size: 1.71 x 1.69 mm
PAD COORDINATES (Unit: m)
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Symbol P1 P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 X -674.50 -674.50 -674.50 -450.50 -309.75 -146.50 -18.75 221.75 400.25 539.25 679.00 693.50 693.50 693.50 Y -407.50 -554.00 -704.00 -704.00 -704.25 -704.25 -704.25 -704.25 -704.25 -704.25 -704.25 -468.75 -329.00 -189.00 No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Symbol P15 P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 P27 P28 X 693.50 693.50 693.50 537.00 386.75 246.75 97.25 -42.75 -192.25 -332.00 -481.50 -674.50 -674.50 -674.50 Y -49.00 91.00 231.00 680.50 680.50 680.50 680.50 680.50 680.50 680.50 680.50 614.50 449.00 267.375
Note: The original point of the coordinate is the die center.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.1 2002-02-28
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PCB WIRE LAYOUT SCHEMATIC:
Transmitting tube output ground line
SC3010
The transmitting tube ground line and IC ground line should layout separated or overstriking ground line.
The above IC only use to hint, not to specified.
Note: * In wire layout, the power filter capacitor should near to IC. * In wire layout, should avoid power line and ground line too long. * Recommended infrared transmit unit and IC ground line should layout separated, or overstriking lines. * The emitter of triode connect 1 resistor at least. * Recommended triode use 9014.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.1 2002-02-28
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PACKAGE OUTLINE
SC3010
UNIT: mm
2.54 0.05
DIP-28-600-2.54
13.8B 0.25
37.34B0.3
1.52B0.5
15.24(600)
15 degree 3.00MIN 4.96MAX
0.5MIN
0.46B0.08
2.16MAX
SOP-28-375-1.27
UNIT: mm
1.27 17.75B0.25
10.2B
0.45B0.1 2.8 MAX
0.15B0.05
16.51
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.1 2002-02-28
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9.525(375)
0.4
7.6B 0.3
0.25B
Silan Semiconductors
Attach Revision History
Data
2001.11.07
SC3010
REV
2.0
Description
Modify the "Absolute maximum rating "
Page
2 11 13 14
2002.02.28
2.1
Modify the "Application circuit " Add the "PCB wire layout schematic" Modify the "package outline"
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Rev: 2.1 2002-02-28
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