SyncMOS Technologies International, Inc.
SM5964A
8-Bit Micro-controller
With 64KB ISP Flash & TWSI & PWM & 1KB RAM embedded
Product List
SM5964AL25, 25MHz 64KB internal flash MCU
Feature
Working Voltage:3.0V through 3.6V
80C51 Central Processor Unit (CPU)
64K x 8 on chip flash memory with In-
System-Programming(ISP) capability and it
can be programmed at V
CC =
3.3V
1024 x 8 RAM, expandable externally to
64KB
Two standard 16-bits timers/counters
An additional 16-bits timer/counter coupled to
a capture and compare register.
Two 8-bits / 5-bits resolution
Pulse-Width-Modulation (PWM) outputs
Four 8-bits I/O ports.(For PDIP package)
Four 8-bits I/O ports plus one 4-bits I/O port.
(For PLCC or QFP package)
TWSI-bus serial I/O port with master and
slave functions
Full-duplex UART
7 interrupt sources with 2 priority levels
Temperature range (0℃ to +70℃)
Software enable/disable ALE output pulse
Wake-up from POWER-DOWN mode by
external interrupt or H/W RESET.
ISP service program space configurable in
N*512 byte (N=0 to 8) size
General Description
The SM5964A is a single-chip 8-bits micro-
controller manufactured in an advanced CMOS
process with on chip flash memory. It supports In-
System Programming (ISP) function and is a
derivative of the 8052 microcontroller family. The
SM5964A has the same instructions set as the 80C51.
The SM5964A contains a 64KB 3.3V on chip
program flash, a volatile 1024 x 8 data RAM, four
8-bits I/O ports, one 4-bits I/O port, two 16-bits
timer/event counters, and an additional 16-bits timer
coupled to capture and compare latches, a
two-priority-level, nested interrupt structure, two
pulse-width- modulation (PWM) outputs, two serial
interfaces (UART and TWSI bus). For system that
requires extra capability the SM5964A can be
expanded using standard LVTTL compatible memory
and logic.
In addition, The SM5964A has two software
selectable modes of power saving – IDLE mode and
POWER-DOWN mode. The IDLE mode freezes the
CPU while allowing the RAM, timer, serial ports, and
interrupt system to continue functioning. The
POWER-DOWN mode saves the RAM contents but
freezes the oscillator, causing all other chip functions
to be inoperative.
The SM5964A is designed for 3.3V applications. The
on chip flash memory can store data while the
program is running. It also can upgrade the user
program by down-load new code form PC or other
devices. The chip is considered as a small integrated
system.
Ordering Information
SM5964AihhkL
yymmv
i: process identifier {L=3.0V~3.6V}
hh: working clock in MHz {25}
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}
Specifications subject to change without notice contact your sales representatives for the most recent information.
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
1
Ver 2.3 SM5964A 10/2006
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
