EFM32PG1 Datasheet, PDF (36/94 Pages) Silicon Laboratories – Industrial and factory automation

5. Typical Connection Diagrams
EFM32PG1 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
Power plane
CDEC
DVDD
AVDD_0
DECOUPLE
AVDD_1
IOVDD
EFM32 _VREGVSS
CIOVDD CAVDD_1 CAVDD_0 CDVDD
Ground plane
Figure 5.1. EFM32PG1 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 supply.
VDD
Power plane
VREGVDD
LVREGSW
VREGSW
DVDD
IOVDD
AVDD_0
AVDD_1
CVREGSW _{CDVDD CIOVDD}
DECOUPLE
EFM32 _VREGVSS
CAVDD_1 CAVDD_0
CDEC
Ground plane
Figure 5.2. EFM32PG1 Typical Application Circuit: Configuration with DC-DC Converter
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