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

AT91SAM7X512 Datasheet(PDF) 70 Page - ATMEL Corporation

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