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Silan

Semiconductors

INFRARED REMOTE CONTROL

TRANSMITTER

DESCRIPTION

SC9012 is an infrared remote control transmitter utilizing CMOS

Technology specially designed for use on infrared remote control

applications. It is capable of controlling 32 function keys and 6

double keys. Each system has a maximum of 8 commands; thus,

SC9012 can provide up to a total of 256 commands.

The pin assignments and application circuit are optimized for easy

PCB Layout and cost saving advantage. SC9012 is housed in a 20-

pins SO package.

SC9012

SOP-20

FEATURES

* CMOS Technology

* Low Power Consumption

* Built-in Oscillation Circuit

* Least External Components

* 32 Function Keys

8 Customer Codes

Up to 256 Commands

ORDERING INFORMATION

SC9012

SOP-20 Package

APPLICATIONS

* Infrared Remote Control Transmitter

Equipment

* Television Remote control Equipment

* VCR Remote control Equipment

* VCD, Audio Equipment

* 6 Double Function Keys

* LED Indication of Transmission

PIN CONFIGURATION

BLOCK DIAGRAM

OSCO

8

OSCI

9

D

OUT

5

LMP

11

KI0

KI1

KI2

KI3

D

OUT

V

DD

NC

OSCO

OSCI

1

2

3

4

5

6

7

8

9

20

SEL

OSC Circuit

Output Circuit

Carrier

Generation Circuit

Control Circuit

10

V

SS

6

V

DD

19

KO0

18

KO1

17

KO2

16

KO3

NC

7

Timing Generation

Frequency

Division Circuit

SC9012

15

KO4

14

KO5

13

KO6

12

KO7

11

LMP

SEL

20

Customer Code

Latch Circuit

Digital Circuit

Key Input Scan Circuit

Key Output Scan Circuit

Vss

10

1

2

3

4

19

18

17

16

15

14

13

12

KI0 KI1 KI2 KI3

KO0 KO1 KO2 KO3 KO4 KO5 KO6 KO7

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 2.1

2002-02-28

1

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