Datasheet

iii
Preliminary/Confidential
T89C51AC2
4127D–8051–02/03
ADC Converter Operation................................................................................... 85
Voltage Conversion ............................................................................................ 85
VAREF................................................................................................................ 85
Clock Selection................................................................................................... 85
ADC Standby Mode............................................................................................ 86
IT ADC Management.......................................................................................... 86
Routines Examples............................................................................................. 86
Registers 88
Interrupt System ................................................................................. 90
Introduction......................................................................................................... 90
Registers............................................................................................................. 92
Electrical Characteristics ................................................................... 98
Absolute Maximum Ratings* ...............................................................................98
DC Parameters for Standard Voltage .................................................................98
DC Parameters for A/D Converter ....................................................................101
AC Parameters .................................................................................................101
Ordering Information ........................................................................ 111
Package Drawings 112
VQFP44............................................................................................................ 112
PLCC44 ............................................................................................................ 113