Datasheet

iii
AT89C5132
4173C–USB–07/04
Multiprocessor Communication (Modes 2 and 3) ..............................................111
Automatic Address Recognition........................................................................ 111
Interrupt .............................................................................................................113
Registers............................................................................................................114
Synchronous Peripheral Interface .................................................. 117
Description.........................................................................................................118
Interrupt ............................................................................................................ 121
Configuration .....................................................................................................122
Registers........................................................................................................... 125
Two-wire Interface (TWI) Controller ................................................ 127
Description........................................................................................................ 127
Registers........................................................................................................... 141
Analog to Digital Converter ............................................................. 143
Description........................................................................................................ 143
Registers............................................................................................................146
Keyboard Interface ........................................................................... 148
Description........................................................................................................ 148
Registers............................................................................................................149
Electrical Characteristics ................................................................. 150
Absolute Maximum Ratings.............................................................................. 150
DC Characteristics............................................................................................ 150
AC Characteristics ............................................................................................ 155
Ordering Information ........................................................................ 170
Package Information ........................................................................ 171
TQFP80 ........................................................................................................... 171
PLCC84 .............................................................................................................172
Datasheet Change Log for AT89C5132........................................... 173
Changes from 4173A-08/02 to 4173B-02/04.................................................... 173