Datasheet > HE89R21(S)

HE89R21(S)

更新时间： 2024-11-10 23:55:35

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HE89R21(S) 数据手册

KING BILLION ELECTRONICS CO.， LTD

駿億電子股份有限公司

HE89R21

HE80000 SERIES

A. HE89R21 Introduction

HE8R21 is a member of 8-bit Micro-controller series used for telephone communication developed by

King Billion Electronics Ltd. This IC build-in 128-dot LCD driver, and also have 16-bit I/O port. This IC

built-in a DTMF generator can generate the PSTN dialing tone directly. It can be applicable as Small/

Medium class telephone communication product etc.. It also built-in an Regulator for providing LCD

display well.

The instruction set of HE89R21 are quite easy to learn and simple to use. Only about thirty instructions

with four-type addressing mode are provided. Most of instructions take only 3 oscillator clocks (machine

cycles). The processing power is enough to most of battery operation system.

B. HE89R21 Features

z Operation Voltage：

2.4V – 5.5V

z System Clock：

DC ~ 8MHz @ 5.0V

DC ~ 4MHz @ 2.4V

z Internal ROM：

16K Bytes(16K Program ROM)

z Internal RAM：

512 Bytes.

z Dual Clock System ：

Normal (Fast) clock： 32.768K ~ 8MHz

Slow clock：

32.768KHz

z Operation Mode：

DUAL、FAST、SLOW、IDLE、SLEEP Mode.

z With WDT (WATCH DOG TIMER) to prevent deadlock condition..

z 16 bit Bi-directional I/O port. Mask Option can select PUSH-PULL or OPEN DRAIN output mode

for each I/O pin.

z 128 dots LCD driver (A, B TYPE selectable).

z Built-in Regulator for providing LCD a stable operation voltage.

z Built-in DTMF Generator.

z Two external interrupts and three internal timer interrupts.

z Two 16-bit timer and one Time Base timer.

z Instruction set： 32 instructions, 4 addressing mode. 9-bit DATA POINTER for RAM and 14-bit

TABLE POINTER for ROM.

V3.1E

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