AT91SAM9G45(2009) Просмотр технического описания (PDF) - Atmel Corporation

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AT91SAM9G45
(Rev.:2009)

AT91 ARM Thumb-based Microcontrollers

Atmel Corporation 

AT91SAM9G45

Table of Contents

Features ..................................................................................................... 1

1 Description ............................................................................................... 2

2 Block Diagram .......................................................................................... 3

3 Signal Description ................................................................................... 4

4 Package and Pinout ............................................................................... 11

4.1 Mechanical Overview of the 324-ball TFBGA Package ...................................11

4.2 324-ball TFBGA Package Pinout .....................................................................12

5 Power Considerations ........................................................................... 14

5.1 Power Supplies ................................................................................................14

6 Memories ................................................................................................ 15

6.1 Memory Mapping .............................................................................................16

6.2 Embedded Memories ......................................................................................16

6.3 I/O Drive Selection and Delay Control .............................................................17

7 System Controller .................................................................................. 19

7.1 System Controller Mapping .............................................................................20

7.2 System Controller Block Diagram ....................................................................21

7.3 Chip Identification ............................................................................................22

7.4 Backup Section ................................................................................................22

8 Peripherals ............................................................................................. 23

8.1 Peripheral Mapping .........................................................................................23

8.2 Peripheral Identifiers ........................................................................................23

8.3 Peripheral Interrupts and Clock Control ..........................................................24

8.4 Peripheral Signals Multiplexing on I/O Lines ...................................................24

9 ARM926EJ-S Processor Overview ....................................................... 31

9.1 Description .......................................................................................................31

9.2 Embedded Characteristics ..............................................................................32

9.3 Block Diagram .................................................................................................33

9.4 ARM9EJ-S Processor ......................................................................................34

9.5 CP15 Coprocessor ..........................................................................................42

9.6 Memory Management Unit (MMU) ..................................................................44

9.7 Caches and Write Buffer .................................................................................46

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6438D–ATARM–13-Oct-09

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