RESETREAS

nRF54LM20A | nRF54LM20B Datasheet

Address offset: 0x600

Reset reason

Before entering System OFF mode, the RESETREAS register must be cleared.

Note: Unless cleared, the RESETREAS register will be cumulative. A field is cleared by writing 1 to it.
Note: When RESETREAS shows a pin reset (RESETPIN), ignore other reset reason bits.
Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID O N M L K J I H G F E D C B A
Reset 0x00000000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ID R/W Field Value ID Value Description
A

RW

RESETPIN

Reset from pin reset detected

CTRL-AP generating a pin reset has its own bit.

NotDetected

0

Not detected

Detected

1

Detected

B

RW

DOG0

Reset from watchdog timer 0 detected

NotDetected

0

Not detected

Detected

1

Detected

C

RW

DOG1

Reset from watchdog timer 1 detected

NotDetected

0

Not detected

Detected

1

Detected

D

RW

CTRLAPSOFT

Soft reset from CTRL-AP detected

NotDetected

0

Not detected

Detected

1

Detected

E

RW

CTRLAPHARD

Reset due to CTRL-AP hard reset

NotDetected

0

Not detected

Detected

1

Detected

F

RW

CTRLAPPIN

Reset due to CTRL-AP pin reset

NotDetected

0

Not detected

Detected

1

Detected

G

RW

SREQ

Reset from soft reset detected

NotDetected

0

Not detected

Detected

1

Detected

H

RW

LOCKUP

Reset from CPU lockup detected

NotDetected

0

Not detected

Detected

1

Detected

I

RW

OFF

Reset due to wakeup from System OFF mode when wakeup is triggered by DETECT signal from GPIO

NotDetected

0

Not detected

Detected

1

Detected

J

RW

LPCOMP

Reset due to wakeup from System OFF mode when wakeup is triggered by ANADETECT signal from LPCOMP

NotDetected

0

Not detected

Detected

1

Detected

K

RW

DIF

Reset triggered by Debug Interface

NotDetected

0

Not detected

Detected

1

Detected

L

RW

GRTC

Reset due to wakeup from GRTC

NotDetected

0

Not detected

Detected

1

Detected

M

RW

NFC

Reset after wakeup from System OFF mode due to NFC field being detected

NotDetected

0

Not detected

Detected

1

Detected

N

RW

SECTAMPER

Reset due to illegal tampering of the device

NotDetected

0

Not detected

Detected

1

Detected

O

RW

VBUS

Reset after wakeup from System OFF mode due to VBUS rising into valid range

NotDetected

0

Not detected

Detected

1

Detected