Datasheet

Table of Contents
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Table of Contents
Features ................................................................................................. 1
Description ............................................................................................ 2
Block Diagram ....................................................................................... 2
Pin Configuration .................................................................................. 3
I/O Configurations ................................................................................................ 4
Port 1, Port 3 and Port 4....................................................................................... 4
Port 0 and Port 2 .................................................................................................. 4
Read-Modify-Write Instructions ............................................................................ 5
Quasi-Bidirectional Port Operation ....................................................................... 6
SFR Mapping ......................................................................................... 8
Clock .................................................................................................... 14
Description ......................................................................................................... 14
Register ............................................................................................................... 17
Power Management ............................................................................ 18
Reset Pin ............................................................................................................ 18
At Power-up (Cold Reset) .................................................................................. 18
Reset Recommendation to Prevent Flash Corruption ........................................ 19
Idle Mode............................................................................................................ 19
Power-down Mode ............................................................................................. 20
Registers ............................................................................................................ 22
Data Memory ....................................................................................... 23
Internal Space ..................................................................................................... 24
External Space ................................................................................................... 25
Dual Data Pointer ................................................................................................ 27
Registers ............................................................................................................ 28
EEPROM Data Memory ....................................................................... 30
Write Data in the Column Latches...................................................................... 30
Programming...................................................................................................... 30
Read Data .......................................................................................................... 30
Examples............................................................................................................ 31
Registers ............................................................................................................ 32