SC9012 Ver la hoja de datos (PDF) - Silan Microelectronics

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SC9012

INFRARED REMOTE CONTROL TRANSMITTER

Silan Microelectronics 

Silan

Semiconductors

SC9012

The waveforms of leader code, bit “0” and bit “1” refer to follow diagram:

Leader

Code

4.5ms

4.5ms

Bit“0”

Tm Tm

Tm=0.56ms

Bit“1”

Tm 3Tm

6. DOUBLE KEY OPERATION

There are 6 double keys operation, such as K21 connected with K22 ~ K24; K25 connected with K26 ~ K28, refer to

the follow table:

The Primary Key The Secondary Key D0 D1 D2 D3 D4 D5 D6 D7

K22

1

0

1

0

1

1

0

0

K21

K23

0

1

1

0

1

1

0

0

K24

1

1

1

0

1

1

0

0

K26

1

0

0

1

1

1

0

0

K25

K27

0

1

0

1

1

1

0

0

K28

1

1

0

1

1

1

0

0

When any of the double or multiple key combinations are pressed, except the 6 keys mentioned above, there is no

output.

In addition, Double Key Operation is useful for tape deck recording operation. Press the K21 or K23 key at the first

then followed by the secondary key such as K22~K24; K26~K28.

Please refer to the follow diagram:

1. Double Key Operation available

K21

(K25)

K22~K24

K26~K28

K21(K25) Key Code Transmission

T>126ms

K22~K24+D5(1) Key Code Transmission

(K26~K28+D5(1))

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 2.1 2002-02-28

5

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