Atmel SAM4S-XPLD Atmel ATSAM4S-XPLD ATSAM4S-XPLD Hoja De Datos

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SAM4S [DATASHEET]

11100E–ATARM–24-Jul-13

The Reset State Manager manages the following priorities between the different reset sources, given in descending
order:



General Reset



Backup Reset



Watchdog Reset



Software Reset



User Reset

Particular 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.