User manual

...the world's most energy friendly microcontrollers
2012-04-24 - Giant Gecko Family - d0053_Rev0.96 818
www.energymicro.com
Table of Contents
1. Energy Friendly Microcontrollers .................................................................................................................. 2
1.1. Typical Applications ......................................................................................................................... 2
1.2. EFM32GG Development .................................................................................................................. 2
2. About This Document ................................................................................................................................ 3
2.1. Conventions ................................................................................................................................... 3
2.2. Related Documentation .................................................................................................................... 4
3. System Overview ...................................................................................................................................... 5
3.1. Introduction .................................................................................................................................... 5
3.2. Features ....................................................................................................................................... 5
3.3. Block Diagram ............................................................................................................................... 6
3.4. Energy Modes ................................................................................................................................ 7
3.5. Product Overview ........................................................................................................................... 8
4. System Processor .................................................................................................................................... 11
4.1. Introduction .................................................................................................................................. 11
4.2. Features ...................................................................................................................................... 11
4.3. Functional Description .................................................................................................................... 12
5. Memory and Bus System .......................................................................................................................... 14
5.1. Introduction .................................................................................................................................. 14
5.2. Functional Description .................................................................................................................... 15
5.3. Access to Low Energy Peripherals (Asynchronous Registers) ................................................................ 20
5.4. Flash .......................................................................................................................................... 23
5.5. SRAM ......................................................................................................................................... 23
5.6. Device Information (DI) Page .......................................................................................................... 23
6. DBG - Debug Interface ............................................................................................................................. 26
6.1. Introduction .................................................................................................................................. 26
6.2. Features ...................................................................................................................................... 26
6.3. Functional Description .................................................................................................................... 26
6.4. Debug Lock and Device Erase ........................................................................................................ 27
6.5. Register Map ............................................................................................................................... 29
6.6. Register Description ...................................................................................................................... 29
7. MSC - Memory System Controller ............................................................................................................. 31
7.1. Introduction .................................................................................................................................. 31
7.2. Features ...................................................................................................................................... 32
7.3. Functional Description .................................................................................................................... 32
7.4. Register Map ............................................................................................................................... 39
7.5. Register Description ...................................................................................................................... 39
8. DMA - DMA Controller ............................................................................................................................. 49
8.1. Introduction .................................................................................................................................. 49
8.2. Features ...................................................................................................................................... 49
8.3. Block Diagram .............................................................................................................................. 50
8.4. Functional Description .................................................................................................................... 51
8.5. Examples .................................................................................................................................... 71
8.6. Register Map ............................................................................................................................... 72
8.7. Register Description ...................................................................................................................... 73
9. RMU - Reset Management Unit ................................................................................................................. 98
9.1. Introduction .................................................................................................................................. 98
9.2. Features ...................................................................................................................................... 98
9.3. Functional Description .................................................................................................................... 98
9.4. Register Map .............................................................................................................................. 103
9.5. Register Description ..................................................................................................................... 103
10. EMU - Energy Management Unit ............................................................................................................. 106
10.1. Introduction ............................................................................................................................... 106
10.2. Features .................................................................................................................................. 106
10.3. Functional Description ................................................................................................................ 107
10.4. Register Map ............................................................................................................................ 117
10.5. Register Description ................................................................................................................... 117
11. CMU - Clock Management Unit ............................................................................................................. 126
11.1. Introduction ............................................................................................................................... 126
11.2. Features .................................................................................................................................. 126
11.3. Functional Description ................................................................................................................ 127
11.4. Register Map ............................................................................................................................ 136
11.5. Register Description ................................................................................................................... 137
12. WDOG - Watchdog Timer ...................................................................................................................... 159
12.1. Introduction ............................................................................................................................... 159
12.2. Features .................................................................................................................................. 159
12.3. Functional Description ................................................................................................................ 159
12.4. Register Map ............................................................................................................................ 161
12.5. Register Description ................................................................................................................... 161
13. PRS - Peripheral Reflex System ............................................................................................................. 164
13.1. Introduction ............................................................................................................................... 164
13.2. Features .................................................................................................................................. 164