MLC331B datasheet(2/30 Pages) MEGAWIN

2 / 30 page

MLC0xxB Series Technical Summary

MEGAWIN

Application Field

General voice synthesizer

Toy controller

General IR controller

General Description

MLC0xxB series integrates an 8-bit CPU core,

SRAM, timer, D/A and system control circuits

by a CMOS silicon gate technology. The ROM

can store voice, melody, data table and

program.

Twenty-four I/O pins can be used for keypad

control, motor control, IR application, LED

indicators or communication with other

systems. This chip can implement a dual tone

melody function with programmable envelope,

which can perform harmonic music with

different timbres.

This chip is very suitable for instruments,

speech products, and intelligent educational

toys, etc.

Pad Description

Pad No.

Pad Name

I/O

Description

33, 4

AGND, GND

Ground pins, the two ground pins should be connected at

the outside individually

35, 1

AVDD, VDD

Positive power pins, the two power pins should be

connected at the outside individually

2, 3

OSCO, OSCI

O, I

RC or crystal oscillator pins

7, 8

X32O, X32I

O, I

32.768KHz crystal oscillator pins

/RES

System reset pin (low active)

TEST

For test mode only

SPK2

DAC 2 output

SPK1

DAC 1 output

9 ~ 16

P0.0 ~ P0.7

I/O

Programmable I/O ports with interrupt function

25 ~ 32

P1.0 ~ P1.7

I/O

Programmable I/O ports. Port P1.3, P1.4, P1.5 can be I/O

or serial input port. Port1.6, 1.7 can be output with IR

carrier.

17 ~ 24

P2.0 ~ P2.7

I/O

Programmable I/O ports. Port 2.4~2.6 can be I/O or

voltage comparator.

MLC331B Datasheet(PDF) 2 Page - Megawin Technology Co., Ltd

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