EFM32WG Datasheet, PDF (119/834 Pages) List of Unclassifed Manufacturers – The EFM32WG Wonder Gecko is the ideal choice for demanding 8-, 16-, and 32-bit energy sensitive applications.

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Bit
Name
Reset
Access Description
Value
0
1
2
3
Mode
DISABLE
VDDDREG
BUIN
BUOUT
Description
Disable voltage probe.
Connect probe to VDD_DREG.
Connect probe to BU_IN.
Connect probe to BU_OUT.
4
Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
3
BUMODEBODEN
0
RW
Enable brown out detection on BU_VIN when in backup mode
When set, a reset (and switch back to main power) will be performed when in backup mode and BU_VIN browns out.
2
BODCAL
0
RW
Enable BOD calibration mode
When set, the Backup BOD sensing on VDD_DREG will be sensing the DAC output.
1
STATEN
0
RW
Enable backup mode status export
When enabled, BU_STAT will indicate when backup mode is active.
0
EN
0
RW
Enable backup mode
Backup mode will be entered when main power browns out and backup battery is present.
10.5.6 EMU_PWRCONF - Power connection configuration register
Offset
0x034
Reset
Access
Bit Position
Name
Bit
31:5
4:3
2
1
0
Name
Reset
Access Description
Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
PWRRES
0x0
RW
Power domain resistor select
Select value of series resistor between main power domain and backup power domain.
Value
0
1
2
3
Mode
RES0
RES1
RES2
RES3
Description
Main power and backup power connected with RES0 series resistance.
Main power and backup power connected with RES1 series resistance.
Main power and backup power connected with RES2 series resistance.
Main power and backup power connected with RES3 series resistance.
VOUTSTRONG
0
RW
BU_VOUT strong enable
Enable strong switch between backup domain power supply and BU_VOUT.
VOUTMED
0
RW
BU_VOUT medium enable
Enable medium switch between backup domain power supply and BU_VOUT.
VOUTWEAK
0
RW
BU_VOUT weak enable
Enable weak switch between backup domain power supply and BU_VOUT.
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
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