參數(shù)資料
型號: W78C52C
廠商: WINBOND ELECTRONICS CORP
英文描述: 8-BIT Microcontroller(8位的微控制器)
中文描述: 8位微控制器(8位的微控制器)
文件頁數(shù): 4/16頁
文件大小: 239K
代理商: W78C52C
W78C52C
- 4 -
PSEN
Program Store Enable Output, active low.
PSEN
enables the external ROM onto the Port 0
address/data bus during fetch and MOVC operations.
PSEN
goes to a high impedance state during
reset with a weak pull-up.
XTAL1
Crystal 1. This is the crystal oscillator input. This pin may be driven by an external clock.
XTAL2
Crystal 2. This is the crystal oscillator output. It is the inversion of XTAL1.
V
SS
, V
CC
Power Supplies. These are the chip ground and positive supplies.
BLOCK DIAGRAM
SFR
Port 0
Port 1
Alternate
Port 2
CPU
Data Bus
Port 3
Alternate
Serial
Port
Timer 0
CORE
ROM
8 K
Bytes
Interrupt
Timer 1
RAM
256
Bytes
Timer 2
INT 0
INT 1
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