SyncMOS Technologies Inc.
September 2002
SM8951A/8952A
8 - Bit Micro-controller
with 4/8KB flash embedded
Product List
SM8951A/8952AL25, 25 MHz 4/8KB internal memory MCU
SM8951A/8952AC25, 25 MHz 4/8KB internal memory MCU
SM8951A/8952AC40, 40 MHz 4/8KB internal memory MCU
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
4/8 KB internal flash memory
128/256 bytes data RAM
2/3 16 bit timers/counters
Four 8-bit I/O ports
Full duplex serial channel
Bit operation instruction
Page free jumps
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
One watch dog timer (WDT)
Low EMI (inhibit ALE)
Description
The SM8951A/8952A series product is an 8 - bit single chip
micro controller with 4/8 KB flash embedded. It provides hard-
ware features and a powerful instruction set, necessary to
make it a versatile and cost effective controller for those appli-
cations demand up to 32 I/O pins or need up to 4/8 KB 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
yywwv
SM8951A/8952Aihhk
yy: year, ww:week
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}
Postfix
P
J
Q
Package
40L PDIP
44L PLCC
44L QFP
Pin/Pad
Configuration
page 2
page 2
page 2
Dimension
page 13
page 14
page 15
Taiwan
4F, No. 1 Creation Road 1,
Science-based Industrial Park,
Hsinchu, Taiwan 30077
TEL: 886-3-579-2926
886-3-579-2988
FAX: 886-3-579-2960
886-3-578-0493
Specifications subject to change without notice,contact your sales representatives for the most recent information.
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PID 8951A/8952A 09/02
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
