椐?鍎?闆?瀛?鑲?錕?frac12; 鏈?闄?鍏?鍙?/div>
HE89C7D
HE80000 SERIES
A.HE89C7D Introduction
HE89C7D is a member of 8-bit Micro-controller series used for telephone communication developed by
King Billion Electronics Ltd. Users can chose any one of combination among
銆?40
dots LCD Driver +
32 Bit I/O Port銆戔€︺€?56 dots LCD Driver + 56 Bit I/O Port銆慹tc. This IC also built-in a DTMF generator
can generate the PSTN dialing tone directly. It can be applicable as Medium/High Level telephone
communication product etc..
The instruction set of HE89C7D 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.HE89C7D Feature
2.4V 鈥?5.5V
DC ~ 8MHz @ 5.0V
DC ~ 4MHz @ 2.4V
Internal ROM錛?/div>
64K Bytes(64K Program ROM)
Internal RAM錛?/div>
16K Bytes.
Dual Clock System
錛?/div>
Normal (Fast) clock錛?32.768K ~ 8MHz
Slow clock錛?/div>
32.768KHz
Operation Mode錛?/div>
DUAL銆丗AST銆丼LOW銆両DLE銆丼LEEP Mode.
With WDT (WATCH DOG TIMER) to prevent deadlock condition..
32~56 bit Bi-directional I/O port. Mask Option can select PUSH-PULL or OPEN DRAIN output
mode for each I/O pin.
640~256 dots LCD driver (B TYPE selectable).
Built-in DTMF Generator.
Two external interrupts and three internal timer interrupts.
Two 16-bit timer and one Time Base timer.
Instruction set錛?32 instructions, 4 addressing mode. 14-bit
DATA POINTER
for RAM and 16-bit
TABLE POINTER
for ROM.
Operation Voltage錛?/div>
System Clock錛?/div>
1
V3.3E
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