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Silan Semiconductors
INFRARED REMOTE CONTROL RECEIVER
DESCRIPTION
SC9149A/SC9150A
The SC9149A/SC9150A are CMOS LSIs designed for use on the infrared remote control receiver, and when this LSI is used in combination with SC9148A for transmitter, the remote control system can be constructed. The SC9149A is DIP-16 type and is capable of controlling 10 functions, while the SC9150A is DIP-24 type and is capable of controlling 18 functions.
DIP-16 SC9149A
FEATURES
* Able to output parallel multiple keying signals sent from the transmitter (The SC9149A is able to output parallel up to 5 functions, while the SC9150A is able to output parallel up to 6 functions.) * Output for single pulse, hold pulse and cyclic pulse are provided. (cyclic pulse is available only for SC9150A) * A single terminal type oscillator by means of CR is provided. * Code detection circuit provided for code check with the transmitter prevents inter-ferences from various types of machines and apparatus.
SDIP-24 SC9150A
ORDERING INFORMATION
SC9149A SC9149AL SC9149AHN SC9150A
Advanced version DIP-16 package Advanced Dependent cyclic (toggle) Outputs Inversed Rxin input Output format same as "L", except that when HP1 or HP2 is active, it will clear CP1. Advanced version DIP-24 package
PIN CONFIGURATION
GND Rx IN GND Rx IN HP1 HP2 HP3 HP4 HP5 SP5 1 2 3 4 5 6 7 8 16 VDD GND Rx IN HP1 HP2 HP3 HP4 HP5 CP2 1 2 3 16 VDD HP1 HP2 HP3 HP4 HP5 HP6 CP2 CP1 SP10 SP9 1 2 3 4 5 6 7 8 9 10 11 12 24 VDD 23 OSC 22 21 20 CODE 1 CODE 2 SP1 SP2 SP3 SP4 SP5 SP6 SP7 SP8
15 OSC 14 CODE 2
15 OSC 14 CODE 2
SC9149A
13 CODE 3 12 11 10 9 SP1 SP2 SP3 SP4
4 SC9149AL/ 13 CODE 3 5 6 7 8
9149AHN 12 SP1
11 10 9 SP2 SP3 CP1
SC9150A
19 18 17 16 15 14 13
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.2 2003.01.21
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BLOCK DIAGRAM
GND 1 VDD OSC 16 15 OSC Rx IN 2
SC9149A/SC9150A
Up Counter
3 4
HP1 HP2 HP3 HP4 HP5 SP5 SP4 SP3
Input shift register
Shift register
Data Check
5 6
Input Pulse counter
Latch Circuit
7 8
Code Check
Error Detection
Output Buffer
9 10
F/F 14 13 12 SP1
F/F 11 SP2
CODE 2 CODE 3
SC9149A Block Diagram
GND 1 VDD OSC 16 15 OSC
Rx IN 2 Up Counter
3 4
HP1 HP2 HP3 HP4 HP5 CP2 CP1 SP3
Input shift register
Shift register
Data Check
5 6
Input Pulse counter
Latch Circuit
7 8
Code Check
Error Detection
Output Buffer
9 10
F/F 14 13 12 SP1
F/F 11 SP2
CODE 2 CODE 3
SC9149AL/9149AHN Block Diagram
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.2 2003.01.21
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GND 1 VDD OSC 24 23 OSC Input shift register Rx IN 2
SC9149A/SC9150A
3 Up Counter 4 5 Shift register Data Check 6 7 8 Latch Circuit 9 10 HP1 HP2 HP3 HP4 HP5 HP6 CP2 CP1 SP10 SP9 SP8 SP7 SP6 SP5 SP4 SP3
Input Pulse counter
Code Check
Error Detection
11 Output Buffer 12 13 F/F F/F
CODE 1 22 CODE 2 21
14 15 16 17 18
20 SP1
19 SP2
SC9150A Block Diagram
ABSOLUTE MAXIMUM RATINGS(Ta=25C)
Characteristic
Supply Voltage Input / Output Voltage Power Dissipation Operating Temperature Storage Temperature
Symbol
VDD VIN,VOUT PD Tamb Tstg
Value
0 ~ 6.0 Vss-0.3V ~ VDD+0.3V 200 -20 ~ +75 -55 ~ +125
Unit
V V mW C C
ELECTRICAL CHARACTERISTICS(Tamb=25C,VDD=5.0V,Unless otherwise specified)
Parameter
Operating Supply Voltage Operating Supply Current Standard OSC Frequency Oscillation Frequency Variance Of Oscillation Frequency By VDD Variance Of Oscillation Frequency By Temperature "H" Level Output Current "L" Level Input Current "H" Level Pull-Up Resistor Input Circuit Threshold Voltage Hysteresis Width
Symbol
VDD IDD Sfosc fosc Vfosc Tfosc IOH IOL IIH Rup VIN VHIS
Test Conditions
Ta=25 ~ 75C Output without Load
Min
4.5
Typ
Max
5.5 1.0
Unit
V mA kHz kHz % % mA mA A k V V
38 VDD=4.5~5.5V Ta=-30~+75C All output, VOH=4.0V All Output, VOL=1V CODE Terminal, VIH=5.0V CODE Terminal Rx Terminal Rx Terminal 27 -5 -5 57 5 5 -1.0 1.0 -1.0 10 2.0 1.0 40 3.0
20 2.5 0.8
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.2 2003.01.21
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PIN DESCRIPTION
Pin No.
SC9149A 1 2 SC9149AL /9149AHN 1 2 SC9150A 1 2
SC9149A/SC9150A
Symbol
GND Rx IN HP1 ~HP5 HP1 ~HP6 CP1 ~CP2 SP1 ~SP3 SP1 ~SP5 SP1 ~SP10
Terminal
GND Receiving signal input
Function /operation
Instruction signal with carrier signal eliminated is input. As long as receiving signal is input, this output is held at "H" level When receiving signal is input, output is reversed. When receiving signal is input, output is placed at "H" level only for a fixed time.(about 107msec) Transmitter code is compared with a code set at this terminal and if they agree each other, input is accepted. A resistor and a capacitor are parallel connected between this terminal and GND.
Input/output configuration
3~7 --
3~7 --
-3~8
Continuous signal output Cyclic signal output
--
9~8
9~10
F/F
-8~12 --
12~10 ---
--11~20
Single-shot signal output
VDD
13,14
13~14
21~22
CODE
Code input
Built-in pull-up resistor.
VDD
15
15
23
OSC
Timing oscillation
16
16
24
VDD
Power supply
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Rev: 1.2 2003.01.21
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FUNCTIONAL DESCRIPTION
1. OSCILLATION CIRCUIT
SC9149A/SC9150A
Timing with transmitter signal and internal operating clock are all decided by this oscillator.
VDD
osc C R
The oscillator has been so far constructed through a combination of a linear amplifier by means of CMOS inverter in IC and 455kHz ceramic resonator ;however , when SC9149A/SC9150A series are used , a stable oscillator can be constructed by parallel connecting C and R between the oscillator and GND by a single terminal oscillator . Oscillation frequency is about 38KHz5 kHz at R=39k and C=1000pF. (Refer to SCILLATION Frequency Characteristic below )
Oscillator frequency vs. resistor and capacitor
70 70
60 Oscillator frequency (kHz)
Oscillator frequency (kHz)
VDD=5V R=39k
60
VDD=5V C=1000pF
50
50
40
40
30
30
20 700 900 Capacitor 1100 (pF) 1300
20 26 34 42 50 58 Resistor (k
2. RECEIVING SIGNAL INPUT CIRCUIT
Vcc
Amp.
Det.
Rx
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
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SC9149A/SC9150A
Signal received by the light receiving element is sent through the amplifier to the detector where 38 kHz carrier wave is eliminated and is input into the receiving signal input circuit . The receiving signal input circuit (Rx IN ) has a built-in Schmitt circuit for shaping receiving signal waveform to eliminate rounding .
3. RECEIVING SIGNAL CHECK
The receiving signal check is to check 2 cycle transmitting signal sent from the transmitter to determine if it is normal signal .
12 BITS RECEIVING SIGNAL FIRST DATA SECOND DATA 12 BITS
First , the first data is stored in the 12-bits shift register. Then, when the second data is put into the shift register , data is forced out of the shift register by one bit , where the first data has been stored . Now , pushed out data and incoming data to see if they are same . If an error is caused in the receiving data 12bits check , the system is reset at that point of time . Conversely , when all receiving data are OK , output is raised from "L" level to "H" level .
Reader 0.42ms RECEIVEING DATA DATA "1" 0.84ms Reader DATA "0"
SHIFT PULSE
CHECK PULSE
The status of receiving data , shift pulse and check pulse is shown above . Shift pulse is provided in the data center by taking frequency margins of the transmitter and the receiver into consideration .
4.Code Comparison
To prevent interference with other models , C1, C2 and C3 code bits are provided for checking whether the transmitter and receiver codes agree each other . Only when both codes agreed , internal latch strobe pulse is generated to latch receiving data and output is raised from 'L" level . if both codes do not agree , no latch strobe pulse is generated and output remains at "L" level . Code bits used differ depending upon receiver as shown below : CODE BIT C1 C2 C3 C2 1 0 0 1 1 1
C2,C3 are used for SC9149A/9149AL/9149AHN C1,C2 are used for SC9150A. Code bit "0", "0" can not be used.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
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5.INITIALIZATION
SC9149A/SC9150A
In order to initialize the internal status at time of power ON, it is necessary to perform the initialization. The initialization is carried out when a capacitor is connected to the code bit terminal.
INITIALIZE VDD VDD Rup=20k Typical) C=0.001F~0.022F
Rup
Rup
C2
C
C3
C
NOTE: * In case of SC9149A series, connect a capacitor to C1 and C2. * A capacitor for initialization is unnecessary for the terminal for which code bit "0" is selected. However, code bit "0", "0" can not be used. Either one terminal must be set at "H".
6. EXPLANATION OF OUTPUT PULSE SP,HP,CP
6-1. SP1~SP5 (SINGLE PULSE)
SINGLE-SHOT KEY ON Tx OUT LATCH STROBE PULSE SINGLE PULSE OUTPUT
About 107msec 12Bits 12Bits
After checking 12-bits receiving data, if data agree and OK, single pulse is output. Output is raised from "L" level to "H" level and returned again to "L" level after about 107msec.
6-2. HP1~HP5 (Hold pulse)
CONTINUOUS KEY ON
12Bits 12Bits 12Bits 12Bits
Tx OUT LATCH STROBE PULSE HOLD PULSE OUTPUT
About 160msec
Hold pulse is output by the first latch strobe pulse after key ON. Output is kept at "H" level as long as continuous signal is Input. When the key is released and continuous signal is stopped, about 160msec later, output is reversed to "L" by the last latch strobe pulse. Further, HP1~HP5 are able to parallely and simultaneously maximum sextet outputs at "H" level by continuous signal sent from the transmitter. These outputs are optimum as outputs of REC-PLAY,REC-PAUSE, and CUE/REVIEW of tape deck.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.2 2003.01.21
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6-3. CP1,CP2 ( Cyclic Pulse)
SC9149A/SC9150A
KEY ON
12Bits 12Bits 12Bits 12Bits
TX OUT LATCH STROBE PULSE CYCLIC OUTPUT
When single-shot signal received, cyclic pulse output is reversed. This cyclic pulse is used for power ON/OFF, MUTE etc.
7.CODE ALLOCATION (KEY NO. IS FOR SC9148A) DATA BIT Key No. H S1 S2 K1 K2 K3 K4 K5 K6
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1
FUNCTION OF INSTRUCTION
Continuous Signal Continuous Signal Continuous Signal Continuous Signal Continuous Signal Continuous Signal Single-shot signal Single-shot signal Single-shot signal Single-shot signal Single-shot signal Single-shot signal Single-shot signal Single-shot signal Single-shot signal Single-shot signal Cyclic Signal Cyclic Signal HP1 HP2 HP3 HP4 HP5 HP6 SP1 SP2 SP3 SP4 SP5 SP6 SP7 SP8 SP9 SP10 CP1 CP2
C1~C3 code bits are available in addition to the above data bits for optional selection. SC9150A can use all keys, but SC9149A is able to use KEY1~5 and KEY 7~11 only for 10 commands. SC9149AL/9149AHN is able to use KEY1~5 and KEY 7~9, KEY 17~18 only for 10 commands.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.2 2003.01.21
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TYPICAL APPLICATION CIRCUIT
1. SC9149A CIRCUIT
SC9149A/SC9150A
10F
16
VDD
15
OSC
14
C2
13
C3
1000pF
VDD
C
R
1000pF
Control signal
12
SP1
11
SP2
10
SP3
9
SP4
SC9149A
GND
Rx IN
HP1
HP2
HP3
HP4
HP5
SP5
1
10k
2
3
4
5
6
7
8
Rx Input
Control signal
R should be 38k5% C should be polypropylene film capacitor having good temperature characteristics 1000pF5%.
2. SC9149AL/9149AHN CIRCUIT
1000pF Control signal 1000pF
VDD
10F
C
R
16
VDD
15
OSC
14
C2
13
C3
12
SP1
11
SP2
10
SP3
9
CP1
SC9149AL/ 9149AHN
GND Rx IN HP1 HP2 HP3 HP4 HP5 CP2
1
10k
2
3
4
5
6
7
8
Rx Input
Control signal
R should be 38k5% C should be polypropylene film capacitor having good temperature characteristics 1000pF5%.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.2 2003.01.21
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3. SC9150A CIRCUIT
SC9149A/SC9150A
Control signal 1000pF 1000pF
VDD
10F
R
C
24
23
22
C1
21
C2
20
SP1
19
SP2
18
SP3
17
SP4
16
SP5
15
SP6
14
SP7
13
SP8
VDD OSC
SC9150A
GND Rx IN HP1 HP2 HP3 HP4 HP5 HP6 CP2 CP1 SP10 SP9
1
2
10k
3
4
5
6
7
8
9
10
11
12
Rx Input Control signal
R should be 38k5%. C should be polypropylene film capacitor having good temperature characteristics 1000pF5%.
NOTE FOR APPLICATION CIRCUIT
1. COMBINATION OF SC9148A/SC9149A / AL / AHN CODE BITS
SC9148A
T3 CODE (C3) T2 (C2) T1 (C1) Code: C1=C2=1,C3=0
13
12
11
10
K1~K5
VDD
16
VDD
15
OSC
14
Code2 (C2)
13
Code3 (C3)
SP1~SP5
Code: C2=1,C3=0
SC9149A / AL / AHN
Example 1 (C2=1 and C3=0)
The combination of code bits of SC9148A and SC9149A is shown in the following table.
C1
1 1 1
SC9148A C2
1 0 1
C3
0 1 1
SC9149A / AL / AHN C2 C3
1 0 1 0 1 1
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.2 2003.01.21
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SC9149A/SC9150A
To make code bit to "1" on SC9148A, connect diode to CODE terminal from T1~T3 terminal. To set Code bit "0" , open the circuit. SC9149A has C2 and C3 code terminal. Code bit of C1 has been pulled up in IC and C1 is always kept at "1" status. Therefore, on transmitter SC9148A it is necessary to keep C1 code bit at "1" . Example 1 is the external circuit diagram when Code bit C2=1 and C3=0.
2. COMBINATION OF SC9148A/SC9150A CODE BITS
SC9148A
T3 CODE (C3) T2 (C2) T1 (C1) Code: C1=C3=1,C2=0
13
12
11
10
K1~K10
VDD
16
VDD
15
OSC
22
Code1 (C1)
21
Code2 (C2)
SP1~SP10
Code: C1=1,C2=0
SC9150A
Example 2 (C1=1 and C2=0)
The combination of code bits of SC9148A and SC9150A is shown in the following table.
C1
SC9148A C2
C3
SC9150A C2 C3
1 0 1 1 0 0 1 1 0 1 1 1 1 1 1 On SC9150A, C3 code has been pulled up in IC and always kept at "1" status. Therefore , it is necessary to keep Code Bit C3 of transmitter SC9148A at "1". To keep Code Bit C3 at "1", connect a diode to CODE terminal from T3 terminal.
4. Note for Input Signal
If input voltage above VDD+0.3V may possibly be applied to Rx Input Terminal(2 Pin), connect resistor of about 10k in series to Rx Input terminal in order to prevent latch-up. expect SC9149AHN. Other circuit should be connect as following: output signal of infrared receiver should be inversed, and then input RXIN port.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.2 2003.01.21
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PACKAGE OUTLINE
SC9149A/SC9150A
UNIT:mm
2.54
DIP-16-300-2.54
0.25
6.35A
1.52 +0.3 -0 19.55A 0.3
7.62
15 degree
0.5MIN 3.00MIN
0.46A
0.08
SDIP-24-300-2.54
2.54
4.36MAX
1.27MAX
0.25A
0.05
UNIT:mm
0.25
6.40A
+0.3 1.27 -0 29.72A 0.3
7.62
15 degree
0.5 MIN
0.46A
0.08
0.89MAX
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 1.2 2003.01.21
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3.00MIN
4.36MAX
0.25A
0.05
Silan Semiconductors
Attach Revision History
Data
2000.12.31 2003.01.21
SC9149A/SC9150A
REV
1.0 1.2 Original
Description
Add "expect SC9149AHN. Other circuit should be connect as following: output signal of infrared receiver should be inversed, and then input RXIN port." In "4. Note for Input Signal"
Page
11
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