Datasheet

i
4182O–CAN–09/08
AT89C51CC03
Table of Contents
Features ................................................................................................. 1
Description ............................................................................................ 2
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 .................................................................................................... 17
Description.......................................................................................................... 17
Registers............................................................................................................. 20
Data Memory ....................................................................................... 22
Internal Space..................................................................................................... 23
External Space ................................................................................................... 24
Dual Data Pointer ............................................................................................... 26
Registers............................................................................................................. 27
Power Monitor ..................................................................................... 29
Description.......................................................................................................... 29
Reset .................................................................................................... 31
Introduction......................................................................................................... 31
Reset Input ......................................................................................................... 31
Reset Output .......................................................................................................32
Power Management ............................................................................ 33
Introduction......................................................................................................... 33
Idle Mode............................................................................................................ 33
Power-Down Mode ............................................................................................. 33
Registers............................................................................................................. 36
EEPROM Data Memory ...................................................................... 37
Write Data in the Column Latches...................................................................... 37
Programming ...................................................................................................... 37
Read Data........................................................................................................... 37
Examples............................................................................................................ 38