EFR32MG1 Datasheet, PDF (65/94 Pages) Silicon Laboratories – Home and Building Automation and Security

5. Typical Connection Diagrams
EFR32MG1 Mighty Gecko SoC with Integrated Serial Flash 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. EFR32MG1 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. EFR32MG1 Typical Application Circuit: Configuration with DC-DC converter (PAVDD from VDCDC)
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