Datasheet

Electrical characteristics STM32L475xx
86/204 DS10969 Rev 5
6.1.6 Power supply scheme
Figure 11. Power supply scheme
Caution: Each power supply pair (V
DD
/V
SS
, V
DDA
/V
SSA
etc.) must be decoupled with filtering ceramic
capacitors as shown above. These capacitors must be placed as close as possible to, or
below, the appropriate pins on the underside of the PCB to ensure the good functionality of
the device.
MSv40913V1
ADCs/
DACs/
OPAMPs/
COMPs/
VREFBUF
VREF+
VREF-
V
DDA
10 nF
+1 μF
VDDA
VSSA
V
REF
100 nF
+1 μF
V
DD
Level shifter
IO
logic
Kernel logic
(CPU, Digital
& Memories)
Backup circuitry
(LSE, RTC,
Backup registers)
IN
OUT
Regulator
GPIOs
1.55 – 3.6 V
n x 100 nF
+1 x 4.7 μF
n x VSS
n x VDD
VBAT
V
CORE
Power switch
V
DDIO1
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