Datasheet

21.8. Register Description................................................................................................................. 372
22. NVMCTRL – Nonvolatile Memory Controller.........................................................383
22.1. Overview.................................................................................................................................. 383
22.2. Features................................................................................................................................... 383
22.3. Block Diagram.......................................................................................................................... 383
22.4. Signal Description.................................................................................................................... 384
22.5. Product Dependencies.............................................................................................................384
22.6. Functional Description..............................................................................................................385
22.7. Register Summary....................................................................................................................392
22.8. Register Description................................................................................................................. 392
23. PORT - I/O Pin Controller......................................................................................406
23.1. Overview.................................................................................................................................. 406
23.2. Features................................................................................................................................... 406
23.3. Block Diagram.......................................................................................................................... 407
23.4. Signal Description.................................................................................................................... 407
23.5. Product Dependencies............................................................................................................. 407
23.6. Functional Description..............................................................................................................409
23.7. Register Summary....................................................................................................................415
23.8. Register Description................................................................................................................. 416
24. EVSYS – Event System........................................................................................ 437
24.1. Overview.................................................................................................................................. 437
24.2. Features................................................................................................................................... 437
24.3. Block Diagram.......................................................................................................................... 437
24.4. Signal Description.................................................................................................................... 438
24.5. Product Dependencies.............................................................................................................438
24.6. Functional Description..............................................................................................................439
24.7. Register Summary....................................................................................................................444
24.8. Register Description................................................................................................................. 445
25. SERCOM – Serial Communication Interface.........................................................459
25.1. Overview.................................................................................................................................. 459
25.2. Features................................................................................................................................... 459
25.3. Block Diagram.......................................................................................................................... 460
25.4. Signal Description.................................................................................................................... 460
25.5. Product Dependencies.............................................................................................................460
25.6. Functional Description..............................................................................................................462
26. SERCOM USART..................................................................................................468
26.1. Overview.................................................................................................................................. 468
26.2. USART Features...................................................................................................................... 468
26.3. Block Diagram.......................................................................................................................... 469
26.4. Signal Description.................................................................................................................... 469
26.5. Product Dependencies............................................................................................................. 469
26.6. Functional Description..............................................................................................................471
26.7. Register Summary....................................................................................................................485
SAM D21 Family
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 6