AT91SAM7X512 datasheet(70/687 Pages) ATMEL

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6120H–ATARM–17-Feb-09

AT91SAM7X512/256/128 Preliminary

13.3.2

Reset Controller Status Register

RSTC_SR

Access Type:

Read-only

• URSTS: User Reset Status

0 = No high-to-low edge on NRST happened since the last read of RSTC_SR.

1 = At least one high-to-low transition of NRST has been detected since the last read of RSTC_SR.

• BODSTS: Brownout Detection Status

0 = No brownout high-to-low transition happened since the last read of RSTC_SR.

1 = A brownout high-to-low transition has been detected since the last read of RSTC_SR.

• RSTTYP: Reset Type

Reports the cause of the last processor reset. Reading this RSTC_SR does not reset this field.

• NRSTL: NRST Pin Level

Registers the NRST Pin Level at Master Clock (MCK).

• SRCMP: Software Reset Command in Progress

0 = No software command is being performed by the reset controller. The reset controller is ready for a software command.

1 = A software reset command is being performed by the reset controller. The reset controller is busy.

––––––––

––––––

SRCMP

NRSTL

–––––

RSTTYP

76543210

––––––

BODSTS

URSTS

RSTTYP

Reset Type

Comments

Power-up Reset

VDDCORE rising

Watchdog Reset

Watchdog fault occurred

Software Reset

Processor reset required by the software

User Reset

NRST pin detected low

Brownout Reset

Brownout reset occurred

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