EFM32WG990 Datasheet, PDF (18/85 Pages) List of Unclassifed Manufacturers – The EFM32 MCUs are the world’s most energy friendly microcontrollers.

3.6 Power Management
...the world's most energy friendly microcontrollers
The EFM32WG requires the AVDD_x, VDD_DREG and IOVDD_x pins to be connected together (with
optional filter) at the PCB level. For practical schematic recommendations, please see the application
note, "AN0002 EFM32 Hardware Design Considerations".
Table 3.6. Power Management
Symbol
V_BODextthr-
V_BODextthr+
V_PORthr+
t_RESET
C_DECOUPLE
C_{USB_VREGO}
C_{USB_VREGI}
Parameter
Condition
Min
Typ
BOD threshold on
1.74
falling external sup-
ply voltage
BOD threshold on
rising external sup-
ply voltage
Power-on Reset
(POR) threshold on
rising external sup-
ply voltage
Delay from reset
is released until
program execution
starts
Applies to Power-on Reset,
Brown-out Reset and pin reset.
Voltage regulator
decoupling capaci-
tor.
X5R capacitor recommended.
Apply between DECOUPLE pin
and GROUND
USB voltage regu- X5R capacitor recommended.
lator out decoupling Apply between USB_VREGO
capacitor.
pin and GROUND
USB voltage regula- X5R capacitor recommended.
tor in decoupling ca- Apply between USB_VREGI
pacitor.
pin and GROUND
Max
Unit
1.96 V
1.85
1.98 V
1.98 V
163
µs
1
µF
1
µF
4.7
µF
2014-06-13 - EFM32WG990FXX - d0203_Rev1.40
18
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