DescriptionResetTypeNameBit/Field
VDD Powered
DescriptionValue
The internal switches are not used. The HIB signal should be
used to control an external switch or regulator.
0
The internal switches control the power to the on-chip modules
(VDD3ON mode).
1
Regardless of the status of the VDD3ON bit, the HIB signal is asserted
during Hibernate mode. Thus, when VDD3ON is set, the HIB signal
should not be connected to the 3.3V regulator, and the 3.3V power
source should remain connected. When this bit is set while in hibernation,
all pins are held in the state they were in prior to entering hibernation.
For example, inputs remain inputs; outputs driven high remain driven
high, and so on.
Ports retain their state in VDD3ON mode until the RETCLR bit is cleared.
The RETCLR bit must be set when the VDD3ON bit is set.
0RWVDD3ON8
Power Cut Abort Enable
DescriptionValue
The microcontroller goes into hibernation regardless of the
voltage level of the battery.
0
When this bit is set, the battery voltage level is checked
before entering hibernation. If V
BAT
is less than the voltage
specified by VBATSEL, the microcontroller does not go into
hibernation.
1
0RWVABORT7
Clocking Enable
This bit must be enabled to use the Hibernation module.
DescriptionValue
The Hibernation module clock source is disabled.0
The Hibernation module clock source is enabled.1
0RWCLK32EN6
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.
0ROreserved5
External Wake and Interrupt Pin Enable
DescriptionValue
The status of the WAKE or an external I/O wake pad source
pin has no effect on hibernation.
0
An assertion of the WAKE pin or an external I/O wake pad
source takes the microcontroller out of hibernation. An
external I/O wake pad interrupt may be generated in active
mode.
1
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.
0RWPINWEN4
June 18, 2014560
Texas Instruments-Production Data
Hibernation Module
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