AT91SAM9G46B-CU 查看數據表（PDF） - Atmel Corporation

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AT91SAM9G46B-CU

SMART ARM-based Embedded MPU

Atmel Corporation 

11.4.5 Reset State Priorities

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

descending order:

 Backup Reset

 Wake-up 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.

SAM9G46 Series [DATASHEET]

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Atmel-11028G-ATARM-SAM9G46-Datasheet_08-Dec-15

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