26.4.4 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. Watchdog reset
4. Software reset
5. User reset

Specific cases are listed below:

• When in user reset:
  • A watchdog event is impossible because the Watchdog Timer is being reset by the proc_nreset 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.