TM4C123GH6PGE Datasheet, PDF (526/1467 Pages) Texas Instruments – Tiva Microcontroller

Hibernation Module
Bit/Field
4
3
2
1
0
Name
PINWEN
RTCWEN
reserved
HIBREQ
RTCEN
Type
RW
RW
RO
RW
RW
Reset
0
0
Description
External Wake Pin Enable
Value
0
1
Description
The status of the WAKE pin has no effect on hibernation.
An assertion of the WAKE pin takes the microcontroller
out of hibernation.
Note:
The external I/O wake pad interrupt is set if the WAKE pin is
asserted in Run, Sleep, or Deep Sleep mode regardless of
whether the PINWEN bit is 0x0 or 0x1. The interrupt may be
forwarded to the processor by setting the EXTW bit in the
HIBIM register.
RTC Wake-up Enable
Value
0
1
Description
An RTC match event has no effect on hibernation.
An RTC match event (the value the HIBRTCC register
matches the value of the HIBRTCM0 register and the value
of the RTCSSC field matches the RTCSSM field in the
HIBRTCSS register) takes the microcontroller out of
hibernation.
0
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0
Hibernation Request
Value
0
1
Description
No hibernation request.
Set this bit to initiate hibernation.
After a wake-up event, this bit is automatically cleared by hardware.
A hibernation request is ignored if both the PINWEN and RTCWEN bits
are clear.
A hibernation request is held off if the BATCHK bit is set.
0
RTC Timer Enable
Value
0
1
Description
The Hibernation module RTC is disabled.
The Hibernation module RTC is enabled.
526
June 12, 2014
Texas Instruments-Production Data