Datasheet

i
AT89C5132
4173C–USB–07/04
Features ................................................................................................. 1
Description ............................................................................................ 1
Typical Applications ............................................................................. 1
Block Diagram ....................................................................................... 2
Pin Description ..................................................................................... 3
Signals ...................................................................................................................5
Internal Pin Structure.......................................................................................... 10
Clock Controller .................................................................................. 11
Oscillator............................................................................................................. 11
X2 Feature.......................................................................................................... 11
PLL ..................................................................................................................... 12
Registers..............................................................................................................14
Program/Code Memory ...................................................................... 16
Flash Memory Architecture................................................................................. 16
Hardware Security System ................................................................................. 17
Boot Memory Execution.......................................................................................18
Registers..............................................................................................................19
Hardware Bytes ...................................................................................................20
Data Memory ....................................................................................... 21
Internal Space..................................................................................................... 21
External Space ....................................................................................................23
Dual Data Pointer ............................................................................................... 25
Registers............................................................................................................. 26
Special Function Registers ................................................................ 28
Interrupt System ................................................................................. 33
Interrupt System Priorities .................................................................................. 33
External Interrupts .............................................................................................. 36
Registers..............................................................................................................37
Power Management ............................................................................ 43
Reset .................................................................................................................. 43
Reset Recommendation to Prevent Flash Corruption ........................................ 44
Idle Mode............................................................................................................ 44
Power-down Mode.............................................................................................. 45
Registers..............................................................................................................47
Timers/Counters ................................................................................. 48