4.7.4.3 Reset State Priorities

The reset state manager manages the priorities among the different reset sources. The resets are listed in order of priority as follows:

  1. General reset
  2. Backup reset
  3. 32.768 kHz Crystal Failure Detection reset
  4. Watchdog reset
  5. Software reset
  6. User reset

Specific cases are listed below:

  • When in User reset:
    • A watchdog event is impossible because the WDT is being reset by the Processor reset signal.
    • A Software reset is impossible, since the Processor reset is being activated.
  • When in Software reset:
    • A watchdog event has priority over the current state.
    • The NRST has no effect.
  • When in Watchdog reset:
    • The Processor reset is active and so a Software reset cannot be programmed.
    • A User reset cannot be entered.