Manual

iii
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
13.5 Functional Description ..........................................................................70
14 Boot Program .............................................................................73
14.1 Description ...........................................................................................73
14.2 Flow Diagram .......................................................................................73
14.3 Device Initialization ...............................................................................75
14.4 DataFlash Boot .....................................................................................76
14.5 NANDFlash Boot ..................................................................................78
14.6 SAM-BA Boot .......................................................................................79
14.7 Hardware and Software Constraints ....................................................82
15 Reset Controller (RSTC) ............................................................85
15.1 Description ...........................................................................................85
15.2 Block Diagram ......................................................................................85
15.3 Functional Description ..........................................................................85
15.4 Reset Controller (RSTC) User Interface ...............................................95
16 Real-time Timer (RTT) ................................................................99
16.1 Overview ..............................................................................................99
16.2 Block Diagram ......................................................................................99
16.3 Functional Description ..........................................................................99
16.4 Real-time Timer (RTT) User Interface ................................................101
17 Periodic Interval Timer (PIT) ...................................................105
17.1 Overview ............................................................................................105
17.2 Block Diagram ....................................................................................105
17.3 Functional Description ........................................................................106
17.4 Periodic Interval Timer (PIT) User Interface .......................................108
18 Watchdog Timer (WDT) ...........................................................113
18.1 Description .........................................................................................113
18.2 Block Diagram ....................................................................................113
18.3 Functional Description ........................................................................114
18.4 Watchdog Timer (WDT) User Interface ..............................................116
19 Shutdown Controller (SHDWC) ..............................................121
19.1 Description .........................................................................................121
19.2 Block Diagram ....................................................................................121
19.3 I/O Lines Description ..........................................................................121
19.4 Product Dependencies .......................................................................121