EZR32HG320 Datasheet, PDF (21/87 Pages) Silicon Laboratories – Consumer electronics

4.6 Transitions between Energy Modes
The transition times are measured from the trigger to the first clock edge in the CPU.
Table 4.5. Energy Modes Transitions
EZR32HG320 Data Sheet
Electrical Specifications
Parameter
Symbol
Min
Typ
Max
Unit
Transition time from EM1 to EM0
t_EM10
─
0
─
HFCORECLK cycles
Transition time from EM2 to EM0
t_EM20
─
2
─
µs
Transition time from EM3 to EM0
t_EM30
─
2
─
µs
Transition time from EM4 to EM0
t_EM40
─
163
─
µs
4.7 Power Management
The EZR32HG requires the AVDD_x, VDD_DREG, RFVDD_x 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 Considera-
tions.
Table 4.6. Power Management
Symbol
V_BODextthr-
V_BODextthr+
t_RESET
C_DECOUPLE
C_{USB_VREGO}
C_{USB_VREGI}
Parameter
Condition
Min
BOD threshold on fall- EM0
ing external supply volt-
age
EM2
BOD threshold on rising
external supply voltage
Delay from reset is re-
leased until program
execution starts
Applies to Power-on Reset,
Brown-out Reset and pin reset.
Voltage regulator de-
coupling capacitor.
X5R capacitor recommended. Ap-
ply between DECOUPLE pin and
GROUND
USB voltage regulator X5R capacitor recommended. Ap-
out decoupling capaci- ply between USB_VREGO pin
tor.
and GROUND
USB voltage regulator X5R capacitor recommended. Ap-
in decoupling capacitor. ply between USB_VREGI pin and
GROUND
Typ
1.74
1.71
Max
1.86
1.85
Unit
1.96 V
1.98 V
V
163
µs
1
µF
1
µF
4.7
µF
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