Power supplies
AN4488
AN4488 Rev 7
Figure 2.
Power supply scheme
(excluding STM32F469xx/F479xx)
1. Optional. If a separate, external reference voltage is connected on V
REF+
, the two capacitors (100 nF and
1 µF) must be connected.
2. V
CAP2
is not available on all packages. In that case, a single 4.7 µF (ESR < 1
Ω
) is connected to V
CAP1
.
3. V
REF+
is either connected to V
REF+
or to V
DDA
(depending on package).
4. V
REF-
is either connected to V
REF-
or to V
SSA
(depending on package).
5. N is the number of V
DD
and V
SS
inputs.
6. Refer to datasheet for BYPASS_REG and PDR_ON pins connection.
7. V
DDUSB
is only available on STM32F446xx.
8. Backup RAM is not available on STM32F410xx, STM32F411xx, STM32F412xx, STM32F413xx, and
STM32F423xx.
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