at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 807

• Manufacturer Part Number: at91sam9g20-cu
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

6384B–ATARM–15-Dec-08
14 Reset Controller (RSTC) ........................................................................ 85
15 Real-time Timer (RTT) ............................................................................ 99
16 Periodic Interval Timer (PIT) ............................................................... 105
17 Watchdog Timer (WDT) ....................................................................... 111
18 Shutdown Controller (SHDWC) .......................................................... 117
19 AT91SAM9G20 Bus Matrix .................................................................. 123
13.9 EEPROM Boot ...................................................................................................79
13.10 SAM-BA Boot .....................................................................................................80
13.11 Hardware and Software Constraints ..................................................................84
14.1 Overview ............................................................................................................85
14.2 Block Diagram ....................................................................................................85
14.3 Functional Description ........................................................................................86
14.4 Reset Controller (RSTC) User Interface ............................................................94
15.1 Overview ............................................................................................................99
15.2 Block Diagram ....................................................................................................99
15.3 Functional Description ........................................................................................99
15.4 Real-time Timer (RTT) User Interface ..............................................................101
16.1 Overview ..........................................................................................................105
16.2 Block Diagram ..................................................................................................105
16.3 Functional Description ......................................................................................105
16.4 Periodic Interval Timer (PIT) User Interface .....................................................107
17.1 Overview ..........................................................................................................111
17.2 Block Diagram ..................................................................................................111
17.3 Functional Description ......................................................................................112
17.4 Watchdog Timer (WDT) User Interface ............................................................114
18.1 Overview ..........................................................................................................117
18.2 Block Diagram ..................................................................................................117
18.3 I/O Lines Description ........................................................................................117
18.4 Product Dependencies .....................................................................................117
18.5 Functional Description ......................................................................................118
18.6 Shutdown Controller (SHDWC) User Interface ................................................119
19.1 Overview ..........................................................................................................123
19.2 Memory Mapping .............................................................................................123
19.3 Special Bus Granting Techniques ....................................................................123
AT91SAM9G20 Preliminary
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