Vbat - ST STM32F103x6 Manual

Electrical characteristics
Figure 7.
C = 50 pF
5.1.6 Power supply scheme
Figure 9.
10 nF
+ 1 µF
24/67
Pin loading conditions
STM32F103xx pin
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Power supply scheme
V BAT
1.8-3.6 V
GP I/Os
V DD
V DD
1/2/3/4/5
5 × 100 nF
V SS
+ 1 × 10 µF
1/2/3/4/5
V DD
V DDA
V REF
V REF+
10 nF
V REF-
+ 1 µF
V SSA
Figure 8.
3.3 V
Po wer swi tch
OUT
IO
Logic
IN
Regulator
3.3V
Analog:
ADC
RCs, PLL,
...
STM32F103xx
Pin input voltage
STM32F103xx pin
V IN
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Backup circuitry
(OSC32K,RTC,
Wake-up logic
Backup registers)
Kernel logic
(CPU,
Digital
& Memories)
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