AT89C51AC3-RDTIM datasheet(140/143 Pages) ATMEL

140 / 143 page

AT89C51AC3

4383B–8051–01/05

Features................................................................................................ 1

Description ........................................................................................... 1

Block Diagram...................................................................................... 2

Pin Configuration................................................................................. 3

I/O Configurations................................................................................................. 7

Port 1, Port 3 and Port 4 ....................................................................................... 7

Port 0 and Port 2................................................................................................... 8

Read-Modify-Write Instructions ............................................................................ 9

Quasi-Bidirectional Port Operation ..................................................................... 10

SFR Mapping...................................................................................... 11

Clock ................................................................................................... 15

Description.......................................................................................................... 15

Registers............................................................................................................. 18

Data Memory ...................................................................................... 20

Internal Space..................................................................................................... 21

External Space ................................................................................................... 22

Dual Data Pointer ............................................................................................... 24

Registers............................................................................................................. 25

Power Monitor.................................................................................... 27

Description.......................................................................................................... 27

Reset ................................................................................................... 29

Introduction ......................................................................................................... 29

Reset Input ......................................................................................................... 29

Reset Output........................................................................................................30

Power Management ........................................................................... 31

Introduction ......................................................................................................... 31

Idle Mode ............................................................................................................ 31

Power-Down Mode ............................................................................................. 31

Registers............................................................................................................. 34

EEPROM Data Memory...................................................................... 35

Write Data in the Column Latches ...................................................................... 35

Programming ...................................................................................................... 35

Read Data........................................................................................................... 35

Examples ............................................................................................................ 36

Registers............................................................................................................. 37

AT89C51AC3-RDTIM 数据表(PDF) 140 Page - ATMEL Corporation

AT89C51AC3-RDTIM 数据表(HTML) 140 Page - ATMEL Corporation

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