SC9012 Silan Microelectronics Joint-stock, SC9012 Datasheet - Page 4

• Manufacturer Part Number: SC9012
• Description: INFRARED REMOTE CONTROL TRANSMITTER
• Manufacturer: Silan Microelectronics Joint-stock

4. CUSTOMER CODE
There are 8 customer codes, can be selected by using the SEL pin connected with any pin of “KO0 ~ KO7”. Please
refer to follow diagram:
The Custom Code consists of 8 bits
Among these, S0, S1, S2 can be selected with SEL Pin and any pin of “KO0 ~ KO7”; Bit S3 has a fixed value of “1”;
Bits S4 ~ S7 have a fixed value of “0”.
5. TRANSMISSION CODE
Refer to the above diagram, the transmission code consists of leader code, customer code, and key data code.; The
leader code consists of a 4.5 ms carrier waveform followed by a 4.5 ms OFF waveform. The 8-bits customer code
transmitted two times; The 8-bits key data code transmitted two times also, first is the origin code; second is the
inverse code.
The code uses the PPM (Pulse Position Modulation ) Method, with “0”and “1” differentiated by the time between
pulses.
Leader
Code
SEL
20
KO
2
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
KO
connected with SEL, the value of S2, S1, S0 is 0,1,0
19
S0 S1 S2 S3
Silan
Semiconductors
0
KO
18
Custumer Code
1
KO
17
S4
2
S5
KO
S0
16
S6 S7
3
KO
15
S1
S0 S1 S2 S3
4
KO
Customer Code
14
5
S2
KO
13
6
S4
S3
KO
S5
12
4
7
S6
S4
S7
D0 D1 D2 D3 D4
Connected with
S5
Key Data Code
SEL
KO0
KO1
KO2
KO3
KO4
KO5
KO6
KO7
S6
D5 D6 D7
S7
D0 D1 D2 D3 D4 D5 D6 D7
(S2
System Code
0
0
0
0
1
1
1
1
SC9012
Key Data Code
Rev: 2.1
S1 S0
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
2002-02-28