SC50462 データシートの表示（PDF） - Unspecified

部品番号

コンポーネント説明

メーカー

SC50462

INFRARED REMOTE CONTROL TRANSMITTER

Unspecified 

Silan

Semiconductors

SC50462

PIN DESCRIPTION

Pin No. Pin Name

1,24

Vss,Vcc

2,3

OSCI,OSCO

4

5~12

13~20

21,22

23

CNTR

S1~S8

I1~I8

C4 , C5

OUT

Input/output

Power

I/O

O

O

I

I

O

Description

Power Supply: Vcc=3.0V,Vss=0V

Oscillator Input/Output Pin, 455 or 480kHz Crystal is connected

between these pins.

Transmitting Indicator. An LED and resistor are connected from

this pin to Vcc.

Key Scan Signal Output pins.

Key Scan Signal Input pins.

Custom Code

Modulation Pin

FUNCTIONAL DESCRIPTION

SC50462 is a sending signal IC on infrared remote control. Consisting of timing generating circuit, scan signal

generating circuit, key input encoder, instruction decoder, custom code circuit, code encoder, and output buffer. It

has 8*8 key matrix input and custom code with 16 bit PCM which shows 76 instructions.76Instruction are devided

in 64 one shot signal and 12 2-shot signal.

When Input Signal(I1~I8) and/or in combination with the Scan Signals(S1~S8) are activated, SC50462 checks

the ID and the Custom Code Bits-- C4 and C5 --setting before finally sending out the remote control signal.

1. CNTR OUTPUT

The CNTR Pin is the LED transmission Indicator. This means that Whenever a valid transmission is sent, the

LED lights up. The CNTR output becomes “L” in the 7th pulse-rising and “H” in the 17th pulse-rising.

OUT

7th

17th

C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7

Next

Frame

CNTR

One Word

44ms or 46.4ms

Note: Oscillator Frequency=480 or 455kHz

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 2.1 2002-02-28

3

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