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參數(shù)資料
| 型號： | HE89A22(S) |
| 文件頁數(shù)： | 1/1頁 |
| 文件大?。?/td> | 21K |
| 代理商： | HE89A22(S) |
A. HE89A20 Introduction
KING BILLION ELECTRONICS CO.
LTD
HE89A20
HE80000 SERIES
1
V3.1E
HE89A20 is a member of 8-bit Micro-controller series used for telephone communication developed by
King Billion Electronics Ltd. The built-in DTMF generator can generate the PSTN dialing tone directly.
It can be applicable as Small/ Medium class telephone or communication product etc..
The instruction set of HE89A20 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. HE89A20 Features
z
Operation Voltage
z
System Clock
z
z
Internal ROM
z
Internal RAM
z
Dual Clock System
z
z
Operation Mode
z
With WDT (WATCH DOG TIMER) to prevent deadlock condition..
z
32 bit Bi-directional I/O port. Mask Option can select PUSH-PULL or OPEN DRAIN output mode
for each I/O pin.
z
Built-in DTMF Generator.
z
Two external interrupts and three internal timer interrupts.
z
Two 16-bit timers 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.
2.4V – 5.5V
DC ~ 8MHz @ 5.0V
DC ~ 4MHz @ 2.4V
16K Bytes(16K Program ROM)
512 Bytes.
Normal (Fast) clock
Slow clock
DUAL
FAST
SLOW
32.768K ~ 8MHz
32.768KHz
IDLE
SLEEP Mode.
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