Address: 4007_D000h base + 2h offset = 4007_D002h
Bit 7 6 5 4 3 2 1 0
Read 0
Reserved BGEN
ACKISO REGONS
Reserved BGBE
Write w1c
Reset
0 0 0 0 0 1 0 0
PMC_REGSC field descriptions
Field Description
7–6
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
5
Reserved
This field is reserved.
4
BGEN
Bandgap Enable In VLPx Operation
BGEN controls whether the bandgap is enabled in lower power modes of operation (VLPx, LLS, and
VLLSx). When on-chip peripherals require the bandgap voltage reference in low power modes of
operation, set BGEN to continue to enable the bandgap operation.
NOTE: When the bandgap voltage reference is not needed in low power modes, clear BGEN to avoid
excess power consumption.
0 Bandgap voltage reference is disabled in VLPx , LLS , and VLLSx modes
1 Bandgap voltage reference is enabled in VLPx , LLS , and VLLSx modes
3
ACKISO
Acknowledge Isolation
Reading this bit indicates whether certain peripherals and the I/O pads are in a latched state as a result of
having been in a VLLS mode. Writing one to this bit when it is set releases the I/O pads and certain
peripherals to their normal run mode state.
NOTE: After recovering from a VLLS mode, user should restore chip configuration before clearing
ACKISO. In particular, pin configuration for enabled LLWU wakeup pins should be restored to
avoid any LLWU flag from being falsely set when ACKISO is cleared.
0 Peripherals and I/O pads are in normal run state
1 Certain peripherals and I/O pads are in an isolated and latched state
2
REGONS
Regulator In Run Regulation Status
This read-only bit provides the current status of the internal voltage regulator.
0 Regulator is in stop regulation or in transition to/from it
1 Regulator is in run regulation
1
Reserved
This field is reserved.
NOTE: This reserved bit must remain cleared (set to 0).
0
BGBE
Bandgap Buffer Enable
Enables the bandgap buffer.
0 Bandgap buffer not enabled
1 Bandgap buffer enabled
Chapter 14 Power Management Controller (PMC)
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
Freescale Semiconductor, Inc. 243
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