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Silan Semiconductors
REMOTE CONTROL TRANSMITTER
DESCRIPTION
SC9243 is an infrared remote control transmitter utilizing CMOS Technology specially designed for electrical appliances such as Audio System, Television, Video Cassette Recorder, CD Player and others. SC9243 is capable of multiple keying; thus, a maximum of 144 instructions is possible. The pin assignments and application circuit are optimized for easy PCB Layout and cost saving advantage.
SC9243
DIP-20
SOP-20
FEATURES
* CMOS Technology, Low Power Consumption * Least External Components * Up To 144 Instructions (32 Basic + 112 Multiple Keys) * Multiple Keying Is Possible * Wide Range Of Operating Supply Voltage: 2~4 Volts * 7 Out Of 8 System Code Bits Are Pre-Settable * Interference From Other Equipment Or Apparatus Is Prevented.
APPLICATIONS
* Mini COMPO * Video Cassette Recorder(VCR) * CD-Player * Audio Equipment
ORDERING INFORMATION
SC9243 SC9243S DIP-20 Package SOP-20 Package
BLOCK DIAGRAM
VSS 1 Reset Circuit KI0 5 KI1 6 KI2 7 KI3 8 KI4 9 KI5 10 KI6 11 KI7 12 13 14 15 16 17 CODE KO0 KO1 KO2 KO3 Key Input Scan Circuit Key Output Signal Generator CODE Port Circuit Scan Control Code Generator Circuit Frequency Division Circuit Function Generator Circuit Code Output 18 LED 19 DOUT VDD 20 Oscillator Control OSCI 3 OSCO 2 TEST 4
Oscillator Circuit
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.28
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Silan Semiconductors
PIN CONFIGURATION
VSS OSCO OSCI TEST KI0 KI1 KI2 KI3 KI4 KI5 1 2 3 4 5 6 7 8 9 10 20 VDD 19 DOUT 18 LED
SC9243
17 CODE
SC9243
16 KO3 15 KO2 14 KO1 13 KO0 12 KI7 11 KI6
ABSOLUTE MAXIMUM RATING (Tamb=>25C
Characteristic
Supply Voltage Input Voltage With Respect To Vss Power Dissipation Storage Temperature Operating Temperature
Symbol
VDD VIN Pd Tstg TOPR
Test conditions
VDD=3 V All outputs floating
Value
-0.3 ~ 5.0 Vss-0.3 ~ VDD+0.3 300 -40~125
Unit
V V mW C C
VDD=3 V
-20~70
ELECTRICAL CHARACTERISTICS(Tamb=25C,VDD=3V)
Parameter
Operating supply Voltage Operating Supply Current Stand-By Current Input Leakage Current(KI0~KI7) Dout Driving Current LED Sinking Current Input High Level Voltage Input Low Level Voltage Oscillation Frequency Pull-down Resistor Pull-up Resistor
Symbol
VDD IDD ISB IIL IOH IOL VIH VIL fosc Rd Rup
Test conditions
All Function Operating Key On Without Load FOSC=455 KHz All Keys Off Stops Oscillation Output Floating. VIN=GND VDD =3V VDD =3V VO =1.5V VO =1.5V
Min
2.0
Typ
3.0
Max
4.0 1000 1 1.0
Unit
V A A A mA mA
10 -5 0.7 VDD 0 400 455 200 50 VDD 0.3 VDD 800 400 100
V V kHz k k
KI0~KI7 Pins Test Pin
100 25
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.28
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Silan Semiconductors
PIN DESCRIPTION
Pin No.
1 2 3 4 5~12 13~16 17 18 19 20
SC9243
Description
Symbol
VSS OSCO OSCI TEST KI0~KI7 KO0~KO3 CODE LED DOUT VDD
I/O
-O I I I O O O O -Negative Power Supply
Oscillator Output Pin with Built-in Amplifier Circuit and Feedback Resistor Oscillator Input Pin with Built-in Amplifier Circuit and Feedback Resistor Test Pin with Built-in Pull-up Resistor. Typical value is 50k Ohms. When Test Pin is connected to the VSS, Test Mode is activated. Dout Pin output waveform shrinks 15 times without 38KHz carrier waveform Key Matrix Input Pins. Each pin has a built-in pull-down resistor(200k Ohms) Key Scan Output Pins. Normal Operation at "L" level when there is no Key Input. Code Scan Output Pin. This Pin is an open drain type and used for system code setting. Transmission Display Output Pin Infrared LED Driving Output Pin Positive Power Supply
FUNCTIONAL DESCRIPTION
1. TRANSMISSION CODE The transmission code consists of a leader code, 16 bits system code, and 8 bits data code. The inverse of the data code is also sent simultaeously. The following diagram shows this one frame construction.
S0 S1 S2 S3 S4 S5 S6 S7 S0 S1 S2 S3 S4 S5 S6 S7 D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7 leader Code System Code System Code Key Data Code Key Data Code Reference Bit
It should be noted that System Code Bit 7(S7) has a fixed value of "1". The leader code consists of a 4.5 ms carrier waveform followed by a 4.5 ms OFF waveform. It is used as the leader for the following codes. Thus, when reception is configured by a microcomputer, the time relationship between the detection of the reception and the other processes can be managed efficiently. The code uses the PPM (Pulse Position Modulation )Method, with "0"and "1" differentiated by the time between pulses.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.28
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Silan Semiconductors
2.REMOTE OUTPUT WAVEFORMS
SC9243 Remote Output Waveforms are given in the diagram below.(for fosc=455KHz)
SC9243
DOUT Output Waveform
Key On about 38ms Data Transimission Waveform abort 108ms Continuous Transmission Waveform about 108ms
Data Transmission Waveform
Leader Pulse System Code System Code Key Data Code Key Data Code
9ms
17.92ms~36ms 0 1 1 0 1
27ms
4.5ms 9ms
4.5ms 1.2ms 2.25ms 0.56ms
0.56ms
Continuous Transmission Waveform
4.5ms 9ms
4.5ms
0.56ms 2.25ms in case of S0(System Code Bit 0)=0
Carrier Waveform
2/3 1/3 38KHz
When oscillation frequency is 455 KHz, a signal is outputted after pulse is modulated by 38 KHz of duty 1/3 (which is 1/12 of the carrier generation circuit). Note: In preparing the firmware of the receiving circuit, please strictly follow the following instructions: 1. System Codes: The same code is transmitted twice and therefore, always decode these 2 codes and check if they are in agreement with each other. 2. Key Data Codes: The Key Data Code and its inversed code are always transmitted together, therefore, check if they are in agreement with each other.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.28
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Silan Semiconductors
3. KEY MATRIX
SC9243
SC9243 enables the maximum setting of up to 32 keys through a combination of KI0 to KI7 and KO0~KO3. Furthermore, the System Codes are settable in 7 bits through the combination of KI0~KI6 and Code Key. Please refer to the diagram below:
KI0
K1 K09 K17 K25 SD0
KI1
K2 K10 K18 K26 SD1
KI2
K3 K11 K19 K27 SD2
KI3
K4 K12 K20 K28 SD3
KI4
K5 K13 K21 K29 SD4
KI5
K6 K14 K22 K30 SD5
KI6
K7 K15 K23 K31 SD6
KI7
K8 K16 K24 K32
SHIFT KEYS
KO0 KO1 KO2 KO3
CODE
Note: System Code Diode Jumper
SDn
Key Switch
Kn
Key Nos.K8,16,24 and 32 (the Shift Keys ) can be pressed simultaneously or in any random order with other keys (normal keys). The system code setting is constructed by connecting the diode jumper between Code Key and KI0~KI6 keys. With the diode jumper, the system code will have the value of "1". If Code and any one of the KI0~KI6 keys are connected only at one point, the diode jumper may be disregarded.
4.LED TERMINAL
When there is no key activity, the LED Pin is in the HIGH Level. Please refer to the diagram below.
Key In
LED Pin Low Activity
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.28
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Silan Semiconductors
SC9243 DATA CODE MAP 1 (ONE KEY PRESSED)
Key No.
K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 K12 K13 K14 K15 K16 K17 K18 K19 K20 K21 K22 K23 K24 K25 K26 K27 K28 K29 K30 K31 K32 KO3 KO2 KO1 KO0
SC9243
D1
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
KO Port
KI Port
KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7
D0
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 0
D2
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 0
D3
0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0
D4
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 0
D5
0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1
D6
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
D7
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.28
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Silan Semiconductors
SC9243
D1
0 1 1 0 0 1 1
SC9243 DATA CODE MAP 2 (WHEN SHIFT KEY K8 + OTHER KEYS ARE PRESSED)
Key No.
K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 K12 K13 K14 K15 K16 K17 K18 K19 K20 K21 K22 K23 K24 K25 K26 K27 K28 K29 K30 K31 K32 KO3 KO2 KO1 KO0
KO Port
KI Port
KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7
D0
1 0 1 0 1 0 1
D2
0 0 0 1 1 1 1
D3
0 0 0 0 0 0 0
D4
0 0 0 0 0 0 0
D5
1 1 1 1 1 1 1
D6
0 0 0 0 0 0 0
D7
0 0 0 0 0 0 0
1 0 1 0 1 0 1
0 1 1 0 0 1 1
0 0 0 1 1 1 1
1 1 1 1 1 1 1
0 0 0 0 0 0 0
1 1 1 1 1 1 1
0 0 0 0 0 0 0
0 0 0 0 0 0 0
1 0 1 0 1 0 1
0 1 1 0 0 1 1
0 0 0 1 1 1 1
0 0 0 0 0 0 0
1 1 1 1 1 1 1
1 1 1 1 1 1 1
0 0 0 0 0 0 0
0 0 0 0 0 0 0
1 0 1 0 1 0 1
0 1 1 0 0 1 1
0 0 0 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
0 0 0 0 0 0 0
0 0 0 0 0 0 0
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.28
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Silan Semiconductors
SC9243
D1
0 1 1 0 0 1 1
SC9243 DATA CODE MAP 3 (WHEN SHIFT KEY K16+OTHER KEYS ARE PRESSED)
Key No.
K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 K12 K13 K14 K15 K16 K17 K18 K19 K20 K21 K22 K23 K24 K25 K26 K27 K28 K29 K30 K31 K32 KO3 KO2 KO1 KO0
KO Port
KI Port
KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7
D0
1 0 1 0 1 0 1
D2
0 0 0 1 1 1 1
D3
0 0 0 0 0 0 0
D4
0 0 0 0 0 0 0
D5
1 1 1 1 1 1 1
D6
1 1 1 1 1 1 1
D7
0 0 0 0 0 0 0
1 0 1 0 1 0 1
0 1 1 0 0 1 1
0 0 0 1 1 1 1
1 1 1 1 1 1 1
0 0 0 0 0 0 0
1 1 1 1 1 1 1
1 1 1 1 1 1 1
0 0 0 0 0 0 0
1 0 1 0 1 0 1
0 1 1 0 0 1 1
0 0 0 1 1 1 1
0 0 0 0 0 0 0
1 1 1 1 1 1 1
1 1 1 1 1 1 1
1 1 1 1 1 1 1
0 0 0 0 0 0 0
1 0 1 0 1 0 1
0 1 1 0 0 1 1
0 0 0 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
0 0 0 0 0 0 0
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.28
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Silan Semiconductors
SC9243
D1
0 1 1 0 0 1 1
SC9243 DATA CODE MAP 4 (WHEN SHIFT KEY K24+OTHER KEYS ARE PRESSED)
Key No.
K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 K12 K13 K14 K15 K16 K17 K18 K19 K20 K21 K22 K23 K24 K25 K26 K27 K28 K29 K30 K31 K32 KO3 KO2 KO1 KO0
KO Port
KI Port
KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7
D0
1 0 1 0 1 0 1
D2
0 0 0 1 1 1 1
D3
0 0 0 0 0 0 0
D4
0 0 0 0 0 0 0
D5
1 1 1 1 1 1 1
D6
0 0 0 0 0 0 0
D7
1 1 1 1 1 1 1
1 0 1 0 1 0 1
0 1 1 0 0 1 1
0 0 0 1 1 1 1
1 1 1 1 1 1 1
0 0 0 0 0 0 0
1 1 1 1 1 1 1
0 0 0 0 0 0 0
1 1 1 1 1 1 1
1 0 1 0 1 0 1
0 1 1 0 0 1 1
0 0 0 1 1 1 1
0 0 0 0 0 0 0
1 1 1 1 1 1 1
1 1 1 1 1 1 1
0 0 0 0 0 0 0
1 1 1 1 1 1 1
1 0 1 0 1 0 1
0 1 1 0 0 1 1
0 0 0 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
0 0 0 0 0 0 0
1 1 1 1 1 1 1
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.28
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Silan Semiconductors
SC9243
SC9243 DATA CODE MAP 5 (WHEN SHIFT KEY K32+OTHER KEYS ARE PRESSED)
Key No.
K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 K12 K13 K14 K15 K16 K17 K18 K19 K20 K21 K22 K23 K24 K25 K26 K27 K28 K29 K30 K31 K32 KO3 KO2 KO1 KO0
KO Port
KI Port
KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7
D0
1 0 1 0 1 0 1
D1
0 1 1 0 0 1 1
D2
0 0 0 1 1 1 1
D3
0 0 0 0 0 0 0
D4
0 0 0 0 0 0 0
D5
1 1 1 1 1 1 1
D6
1 1 1 1 1 1 1
D7
1 1 1 1 1 1 1
1 0 1 0 1 0 1
0 1 1 0 0 1 1
0 0 0 1 1 1 1
1 1 1 1 1 1 1
0 0 0 0 0 0 0
1 1 1 1 1 1 1
1 1 1 1 1 1 1
1 1 1 1 1 1 1
1 0 1 0 1 0 1
0 1 1 0 0 1 1
0 0 0 1 1 1 1
0 0 0 0 0 0 0
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 0 1 0 1 0 1
0 1 1 0 0 1 1
0 0 0 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
1 1 1 1 1 1 1
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.28
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TYPICAL APPLICATION CIRCUIT
VDD
SC9243
IR LED NPN(C945) 1 125~330 270 LED
VDD
47F
20
VDD
19
18
17
16
15
KO2
14
KO1
13
KO0
12
KI7
11
KI6
DOUT LED CODE KO3
SC9243
VSS OSCO OSCI TEST KI0 KI1 KI2 KI3 KI4 KI5
1
6.8K
2
455 KHz
3
4
5
1
6
2
7
3
8
4
9
10
5 6 7 8
VDD 100pF 100pF
9
10
11
12
13
14
15
16
17 Push Button Switch 25
18 26
19 27
20 28
21 29
22 30
23 31
24 32
Switch IN4148 For System Code Selection
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.28
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Silan Semiconductors
PCB WIRE LAYOUT SCHEMATIC:
Transmitting tube output ground line
SC9243
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.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.28
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Silan Semiconductors
PACKAGE OUTLINE
SC9243
UNIT:mm
2.54 0.25B 0.05 15 degree
DIP-20-300-2.54
0.25
6.60B
1.27 26.4B0.3
0.51MIN 3.00MIN 0.46B0.08 1.778MAX
SOP-20-375-1.27
4.36MAX
7.62(300)
UNIT:mm
0.4
0.25B0.05
1.27 12.7B0.25 0.4B0.1 3.1MAX
11.43
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.28
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9.525(375)
10.2B
7.6B
0.3
Silan Semiconductors
Attach Revision History
Data
2000.12.31
SC9243
REV
1.0 Original
Description
Modify the "Absolute maximum rating"
Page
2 11 12 13
2002.02.28
1.1
Modify the "Typical application circuit" Add the "PCB wire layout schematic" Modify the "Package outline"
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.28
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