SyncMOS Technologies International, Inc.

SM8958A

8-Bits Micro-controller

With 32KB flash & 1KB RAM embedded

Specifications subject to change without notice contact your sales representatives for the most recent information.

Ver 2.1

SM8958A

08/2006

1

Product List

SM8958AL25, 25MHz 32KB internal flash MCU

SM8958AL33, 33MHz 32KB internal flash MCU

SM8958AC25, 25MHz 32KB internal flash MCU

SM8958AC40, 40MHz 32KB internal flash MCU

Description

The SM8958A is an 8-bit single chip micro controller

with 32KB on-chip flash and 1K byte RAM embedded.

It is a derivative of the 8052 micro controller family. It

has 5-channel SPWM build-in. With its hardware

features and powerful instruction set, it’s straight

forward to make it a versatile and cost effective

controller for those applications which demand up to 32

I/O pins for PDIP package or up to 36 I/O pins for

PLCC/QFP package, or applications which need up to

32K byte flash memory for program data. To program

the on-chip flash memory, a commercial writer is

available to do it in parallel programming method.

Ordering Information

yymmv

SM8958AihhkL

yy: year, ww: month

v: version identifier{ , A, B,…}

i: process identifier {L=3.0V~3.6V,C=4.5V~ 5.5V}

hh: working clock in MHz {25, 40}

k: package type postfix {as below table}

L:PB Free identifier

{No text is Non-PB Free，”P”is PB Free}

Postfix

Package

Pin / Pad

Configuration

Dimension

P

40L PDIP

Page 2

Page 20

J

44L PLCC

Page 2

Page 21

Q

44L QFP

Page 2

Page 22

Features

Working Voltage: 3.0V ~ 3.6V For L Version.

4.5V ~ 5.5V For C Version.

General 8052 family compatible

12 clocks per machine cycle

32K byte on chip program flash

1024 byte on-chip data RAM

Three 16 bit Timers/Counters

One Watch Dog Timer

Four 8-bit I/O ports for PDIP package

Four 8-bit I/O ports + one 4-bit I/O ports for

PLCC or QFP package

Full duplex serial channel

Bit operation instruction

Industrial Level

8-bit Unsigned Division

8-bit Unsigned Multiply

BCD arithmetic

Direct Addressing

Indirect Addressing

Nested Interrupt

Two priority level interrupt

A serial I/O port

Power save modes: Idle mode and Power

down mode

Code protection function

Low EMI (inhibit ALE)

5 channel SPWM function with P1.3 ~ P1.7

Taiwan

6F, No.10-2

Science-based Industrial Park,

Hsinchu, Taiwan 30078

TEL: 886-3-567-1820

886-3-567-1880

FAX: 886-3-567-1891

886-3-567-1894