January 2003

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

3/26

Preliminary

Ver 1.0

SM79108 01/03

SyncMOS Technologies Inc.

SM79108

Preliminary

Timer 2

Timer 1

Timer 0

Stack

Pointer

Decoder &

Register

256

bytes RAM

Block Diagram

Reset

Circuit

Power

Circuit

Interrupt

Circuit

RES

Vdd

Vss

to pertinent blocks

to whole chip

to pertinent blocks

Acc

Buffer2

Buffer1

ALU

PSW

Buffer

DPTR

PC

Incrementer

Program

Counter

Register

8 K

bytes

Flash

Memory

Port 1

Latch

Port 2

Latch

Port 3

Latch

Port 0

Driver & Mux

Port 1

Driver & Mux

Port 2

Driver & Mux

Port 3

Driver & Mux

8

8

8

8

WDT

Timing

Generator

XTAL2

XTAL1

#EA

ALE/SEG5

#PSENSEG4

to whole system

Instruction

Register

Port 0

Latch

ADC

SPWM

PWM

LCD

Driver

(14 x 4)