SyncMOS Technologies Inc.

SM89S16R1

8-Bits Micro-controller

With 64KB Flash ROM & IKB RAM & RTC & ADC & PWM & PDWU embedded

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

SM89S16R1 V1.0 JANUARY 2005

3

Block Diagram

UART

Int-RAM

256x8

Timer0

Timer1

Timer2

INT

CPU

FLASH

64Kx8

Ext-RAM

768x8

RTC

PWM

ADC

iBUS

C51

CORE

WR

(3) (3)

(3)

(3)

Port0

Port1

Port2

Port3

Port4

Parallel I/O ports & Ext. Bus

(4)

(4)

(3)

RD

(3)

PSEN

ALE

Xtal2

Xtal1

EA

(1)

(1)

(1) (1)

(3) (3)

Notes: (1): Alternate function of P1

(2): Alternate function of P2

(3): Alternate function of P3

(4): Alternate function of ALE, PSEN

(2)

(2)

(2)

(2)

PDWU

(3)

(3)