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1745D–ATARM–04-Nov-05
AT91M55800A
11.6 Read Protocols .................................................................................................30
11.7 Write Data Hold Time .......................................................................................32
11.8 Wait States .......................................................................................................33
11.9 Memory Access Waveforms .............................................................................36
11.10 EBI User Interface ..........................................................................................48
12 APMC: Advanced Power Management Controller .............................. 52
12.1 Operating Modes ..............................................................................................53
12.2 Slow Clock Generator ......................................................................................55
12.3 Clock Generator ...............................................................................................56
12.4 System Clock ...................................................................................................59
12.5 Peripheral Clocks .............................................................................................59
12.6 Shut-down and Wake-up ..................................................................................59
12.7 Alarm ................................................................................................................60
12.8 First Start-up Sequence ...................................................................................61
12.9 APMC User Interface .......................................................................................62
13 RTC: Real-time Clock ............................................................................ 73
13.1 Year 2000 Conformity ......................................................................................73
13.2 Functional Description ......................................................................................74
13.3 RTC User Interface ..........................................................................................76
14 WD: Watchdog Timer ............................................................................. 89
15 AIC: Advanced Interrupt Controller ..................................................... 95
15.1 Hardware Interrupt Vectoring ...........................................................................97
15.2 Priority Controller ..............................................................................................97
15.3 Interrupt Handling .............................................................................................97
15.4 Interrupt Masking ..............................................................................................98
15.5 Interrupt Clearing and Setting ..........................................................................98
15.6 Fast Interrupt Request ......................................................................................98
15.7 Software Interrupt .............................................................................................98
15.8 Spurious Interrupt .............................................................................................98
15.9 Protect Mode ....................................................................................................99
15.10 AIC User Interface ........................................................................................101
15.11 Standard Interrupt Sequence .......................................................................110
16 PIO: Parallel I/O Controller .................................................................. 112
16.1 Multiplexed I/O Lines ......................................................................................112