SyncMOS Technologies International, Inc.

SM894051

8-Bits Micro-controller

With 4KB Flash ROM embedded

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

SM894051

V1.4

09 /2006

1

Product List

SM894051L25, 25 MHz 4KB internal memory MCU

SM894051C25, 25 MHz 4KB internal memory MCU

SM894051C40, 40 MHz 4KB internal memory MCU

General Description

The SM894051 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 15 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 capable to do it.

Ordering Information

SM894051ihhkL

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

Dimension

P

20L PDIP

Page 2

Page 14

S

20L SOIC

Page 2

Page 15

Feature

Working voltage: 3.0V ~ 3.6V For L Version

4.5V ~ 5.5V For C Version

General 8051 family compatible

12 clocks per machine cycle

4 KB internal flash memory

128 bytes internal RAM

Two 16 bits timers/counters

15 programmable I/O lines

Full duplex serial UART channel

Bit operation instruction

Industrial Level

8-bits unsigned division

8-bits unsigned multiply

BCD arithmetic

Direct addressing

Indirect addressing

Two priority level interrupt

Power save modes:

Idle mode

Power down mode (provide H/W wake-up

function)

Code protection function

One watch dog timer (WDT)

On-chip Analog Comparator

Direct LED Drive Output (Default = 1)

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