EFR32FG12 Datasheet, PDF (110/183 Pages) –

5. Typical Connection Diagrams
EFR32FG12 Flex Gecko Proprietary Protocol SoC Family Data Sheet
Typical Connection Diagrams
5.1 Power
Typical power supply connections for direct supply, without using the internal DC-DC converter, are shown in the following figure.
VDD
Main ₊
Supply ^–
VREGVDD
AVDD
IOVDD
VREGSW
VREGVSS
DVDD
DECOUPLE
RFVDD
HFXTAL_N
HFXTAL_P
LFXTAL_N
LFXTAL_P
PAVDD
Figure 5.1. EFR32FG12 Typical Application Circuit: Direct Supply Configuration without DC-DC converter
Typical power supply circuits using the internal DC-DC converter are shown below. The MCU operates from the DC-DC converter sup-
ply. For low RF transmit power applications less than 13dBm, the RF PA may be supplied by the DC-DC converter. For OPNs support-
ing high power RF transmission, the RF PA must be directly supplied by VDD for RF transmit power greater than 13 dBm.
VDD
Main ₊
Supply ^–
VDCDC
VREGVDD
AVDD
IOVDD
VREGSW
VREGVSS
DVDD
DECOUPLE
RFVDD
HFXTAL_N
HFXTAL_P
LFXTAL_N
LFXTAL_P
PAVDD
Figure 5.2. EFR32FG12 Typical Application Circuit: Configuration with DC-DC converter (PAVDD from VDCDC)
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