MAX32665-MAX32668 User Guide
Maxim Integrated Page 10 of 457
17.7 Pulse Train Interrupts ---------------------------------------------------------------------------------------------------- 352
17.8 Registers --------------------------------------------------------------------------------------------------------------------- 352
17.9 Register Details ------------------------------------------------------------------------------------------------------------ 354
17.9.1 Pulse Train Engine Safe Enable Register ----------------------------------------------------------------------------------------- 363
17.9.2 Pulse Train Engine Safe Disable Register ---------------------------------------------------------------------------------------- 364
18. Real-Time Clock (RTC) --------------------------------------------------------------------------------------------- 369
18.1 Overview --------------------------------------------------------------------------------------------------------------------- 369
18.2 Instances --------------------------------------------------------------------------------------------------------------------- 370
18.3 Register Access Control -------------------------------------------------------------------------------------------------- 370
18.3.1 RTC_SEC and RTC_SSEC Read Access Control ---------------------------------------------------------------------------------- 370
18.3.2 RTC Write Access Control ------------------------------------------------------------------------------------------------------------ 371
18.4 RTC Alarm Functions ------------------------------------------------------------------------------------------------------ 371
18.4.1 Time-of-Day Alarm -------------------------------------------------------------------------------------------------------------------- 371
18.4.2 Sub-Second Alarm --------------------------------------------------------------------------------------------------------------------- 372
18.4.3 RTC Interrupt and Wakeup Configuration -------------------------------------------------------------------------------------- 373
18.4.4 Square Wave Output ----------------------------------------------------------------------------------------------------------------- 373
18.5 RTC Calibration ------------------------------------------------------------------------------------------------------------- 374
18.6 Registers --------------------------------------------------------------------------------------------------------------------- 376
18.7 Register Details ------------------------------------------------------------------------------------------------------------ 376
19. Watchdog Timer (WDT) ------------------------------------------------------------------------------------------ 380
19.1 Features ---------------------------------------------------------------------------------------------------------------------- 381
19.2 Usage ------------------------------------------------------------------------------------------------------------------------- 381
19.3 Interrupt and Reset Period Timeout Configuration --------------------------------------------------------------- 382
19.4 Timed Access Protection ------------------------------------------------------------------------------------------------- 382
19.5 Enabling the Watchdog Timer ------------------------------------------------------------------------------------------ 383
19.5.1 Enable sequence ----------------------------------------------------------------------------------------------------------------------- 383
19.6 Disabling the Watchdog Timer ----------------------------------------------------------------------------------------- 383
19.6.1 Manual Disable ------------------------------------------------------------------------------------------------------------------------ 383
19.6.2 Automatic Disable --------------------------------------------------------------------------------------------------------------------- 383
19.7 Resetting the Watchdog Timer ----------------------------------------------------------------------------------------- 383
19.7.1 Reset Sequence ------------------------------------------------------------------------------------------------------------------------- 383
19.8 Detection of a Watchdog Reset Event-------------------------------------------------------------------------------- 383
19.9 Registers --------------------------------------------------------------------------------------------------------------------- 383
19.10 Register Details ------------------------------------------------------------------------------------------------------------ 384
20. 1-Wire Master (OWM) -------------------------------------------------------------------------------------------- 387