Datasheet

11.2. Features..................................................................................................................................... 81
11.3. Block Diagram............................................................................................................................ 82
11.4. Signal Description...................................................................................................................... 83
11.5. Product Dependencies...............................................................................................................83
11.6. Functional Description................................................................................................................83
11.7. DEBUG Mode.............................................................................................................................86
11.8. RAM Properties.......................................................................................................................... 87
11.9. Register Summary......................................................................................................................88
11.10. Register Description................................................................................................................... 89
12. DSU - Device Service Unit.................................................................................... 103
12.1. Overview.................................................................................................................................. 103
12.2. Features................................................................................................................................... 103
12.3. Block Diagram.......................................................................................................................... 104
12.4. Signal Description.................................................................................................................... 104
12.5. Product Dependencies............................................................................................................. 104
12.6. Debug Operation......................................................................................................................105
12.7. Chip Erase................................................................................................................................107
12.8. Programming............................................................................................................................108
12.9. Intellectual Property Protection................................................................................................ 108
12.10. Device Identification................................................................................................................. 110
12.11. Functional Description.............................................................................................................. 111
12.12. Register Summary....................................................................................................................116
12.13. Register Description................................................................................................................. 118
13. Clock System.........................................................................................................145
13.1. Clock Distribution..................................................................................................................... 145
13.2. Synchronous and Asynchronous Clocks..................................................................................147
13.3. Register Synchronization......................................................................................................... 147
13.4. Enabling a Peripheral............................................................................................................... 150
13.5. On Demand Clock Requests....................................................................................................150
13.6. Power Consumption vs. Speed................................................................................................ 151
13.7. Clocks after Reset.................................................................................................................... 151
14. GCLK - Generic Clock Controller.......................................................................... 152
14.1. Overview.................................................................................................................................. 152
14.2. Features................................................................................................................................... 152
14.3. Block Diagram.......................................................................................................................... 152
14.4. Signal Description.................................................................................................................... 153
14.5. Product Dependencies............................................................................................................. 153
14.6. Functional Description..............................................................................................................154
14.7. Register Summary....................................................................................................................160
14.8. Register Description................................................................................................................. 160
15. MCLK – Main Clock...............................................................................................170
15.1. Overview.................................................................................................................................. 170
15.2. Features................................................................................................................................... 170
15.3. Block Diagram.......................................................................................................................... 170
SAM D5x/E5x Family Data Sheet
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 6