SyncMOS Technologies International, Inc.

SM8951B

8-Bits Micro-controller

With4KBFlashROM&128bytesRAM embedded

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

ISSFD-M022Ver:BSM8951B

06/2009

1

Product List

SM8951BL25, 25 MHz 4KB internal memory MCU

SM8951BC25, 25 MHz 4KB internal memory MCU

SM8951BC40, 40 MHz 4KB internal memory MCU

General Description

The SM8951B series product is an 8-bits single

chip micro controller with 4KB flash embedded. It

provides hardware features and a powerful

instruction set, necessary to make it a versatile

and cost effective controller for those applications

demand up to 32 I/O pins or need up to 4KB flash

memory either for program or for data or mixed.

To program the flash block, a commercial

programmer is cap-able to do it.

Ordering Information

SM8951BihhkL

yymmv

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}

yy: year,

mm: month

v: version identifier {, A, B,...}

L:PB Free identifier

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

Postfix

Package

Pin / Pad Configuration

P

40L PDIP

Page 2

J

44L PLCC

Page 3

Q

44L QFP

Page 4

Feature

4.5V ~ 5.5V For C Version

General 8051 family compatible

12 clocks per machine cycle

4KB internal flash memory

128 bytes data RAM

Two 16 bit timers/counters

Four 8-bit I/O ports

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

Strong Noise immunity

One watch dog timer (WDT)

Reduce EMI (inhibit ALE)

Taiwan

6F, No.10-2 Li- Hsin 1st Road ,

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