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2008-09-02

LEARNING DECODER

EN/DECODER

M320D

一華半導體股份有限公司

MOSDESIGN SEMICONDUCTOR CORP.

GENERAL DESCRIPTION

The M320D learning decoder is CMOS LSI for remote control system application. It decoder the encoded waveform generated by

M320EA/M320EB and drives data output pin(s) according to the code bits decoded from the received waveform. Up to 1,048,576

address codes that Interface with EEPROM (93LC46) can be stored 32 sets of customer codes at maximum.

FEATURES

‧ Operating voltage 2.4V~5.5V.

‧ Pairs with M320EA/M320EB OTP encoders.

‧ Maximum 1,048,576 address and data code.

‧ 4 Data active: D0, D1, D2, D3.

‧ VT goes high during valid receiving.

‧ Selectable latch or momentary type of data output.

‧ An external oscillator resistor and capacitor.

‧ Interface with EEPROM (93LC46) can be stored 32 sets of customer codes at maximum.

‧ Learning capability and the LED current for learning status indication.

APPLICATIONS

‧ Burglar alarm system, car door controllers, car alarm system, home/office security system…etc.

BLOCK DIAGRAM

Oscillator

OSCI

DATA

VT

Freq

Divider

Logic unit

Control

Output

Driver

DIN

D3

D2

D1

D0

LED

Data

93LC46

Detector

Interface

Power on

Reset

LRN

RES

CS

SK

LM