Silan

Semiconductors

SC9012

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 2.1

2002-02-28

1

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.

FEATURES

* CMOS Technology

* Low Power Consumption

* Built-in Oscillation Circuit

* Least External Components

* 32 Function Keys

8 Customer Codes

Up to 256 Commands

* 6 Double Function Keys

* LED Indication of Transmission

SOP-20

ORDERING INFORMATION

SC9012

SOP-20 Package

APPLICATIONS

* Infrared Remote Control Transmitter

Equipment

* Television Remote control Equipment

* VCR Remote control Equipment

* VCD, Audio Equipment

PIN CONFIGURATION

BLOCK DIAGRAM

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

KI0

KI1

KI2

KI3

NC

OSCO

OSCI

Vss

SEL

KO0

KO1

KO2

KO3

KO4

KO5

KO6

KO7

LMP

SC9012

8

9

OSC Circuit

Frequency

Division Circuit

Timing Generation

Customer Code

Latch Circuit

Key Input Scan Circuit

1

2

3

4

Output Circuit

Carrier

Generation Circuit

Control Circuit

Digital Circuit

19

18

17

16

15

14

13

12

Key Output Scan Circuit

10

6

20

7

5

11

NC

OSCI

LMP

KI0 KI1 KI2 KI3

KO0 KO1 KO2 KO3 KO4 KO5 KO6 KO7

SEL

OSCO