AT89C51AC2 查看數據表（PDF） - Atmel Corporation

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AT89C51AC2

Enhanced 8-bit Microcontroller with 32 KB Flash Memory

Atmel Corporation 

Block Diagram

XTAL1

XTAL2

ALE

PSEN

EA

RD

WR

CPU

UART

RAM

256x8

Flash Boot EE XRAM

32kx loader PROM 1kx8

8 2kx8 2kx8

C51

CORE

IB-bus

PCA Timer 2

Timer 0 INT

Timer 1 Ctrl

Parallel I/O Ports and Ext. Bus Watch

Dog

Port 0 Port 1 Port 2 Port 3 Port 4

10 bit

ADC

Notes: 1. 8 analog Inputs/8 Digital I/O

2. 2-Bit I/O Port

2 A/T89C51AC2

4127H–8051–02/08

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