
161
AT8xC5132
4173A–8051–08/02
Serial I/O Port .................................................................................... 107
Mode Selection................................................................................................. 107
Baud Rate Generator........................................................................................ 107
Synchronous Mode (Mode 0) ........................................................................... 108
Asynchronous Modes (Modes 1, 2 and 3).........................................................110
Multiprocessor Communication (Modes 2 and 3) ..............................................113
Automatic Address Recognition........................................................................ 113
Interrupt .............................................................................................................115
Registers............................................................................................................116
Synchronous Peripheral Interface .................................................. 119
Description.........................................................................................................120
Interrupt ............................................................................................................ 123
Configuration .....................................................................................................124
Registers........................................................................................................... 127
Analog-to-Digital Converter ............................................................. 129
Description........................................................................................................ 129
Registers............................................................................................................132
Keyboard Interface ........................................................................... 134
Description........................................................................................................ 134
Registers............................................................................................................135
Electrical Characteristics ................................................................. 136
Absolute Maximum Ratings.............................................................................. 136
DC Characteristics............................................................................................ 136
AC Characteristics ............................................................................................ 141
Ordering Information ........................................................................ 155
Package Information ........................................................................ 156
TQFP80 ............................................................................................................ 156
PLCC84 .............................................................................................................157
TQFP64 ............................................................................................................ 158
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