STM32F103xx
Electrical characteristics
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General PCB design guidelines
Power supply decoupling should be performed as shown in
depending on whether V
REF+
is connected to V
DDA
or not. The 10 nF capacitors should be
ceramic (good quality). They should be placed them as close as possible to the chip.
Figure 25.
Power supply and reference decoupling (V
REF+
not connected to
V
DDA
)
1.
V
REF+
and V
REF–
inputs are available only on 100-pin packages.
Figure 26.
Power supply and reference decoupling
(V
REF+
connected to
V
DDA
)
1.
V
REF+
and V
REF–
inputs are available only on 100-pin packages.
V
REF+
(see note 1)
STM32F103xx
V
DDA
V
SSA
/V
REF+
(see note 1)
1 µF // 10 nF
1 µF // 10 nF
ai14388
V
REF+
/V
DDA
STM32F103xx
1 µF // 10 nF
V
REF–
/V
SSA
ai14389
(See note 1)
(See note 1)