UM2206 Rev 3 39/55
UM2206 Connectors
54
Figure 19. External power connector
The related pinout for external power connector is listed in Table 15.
Table 15. External power connector pinout
Connector
Pin
number
Signal name STM32 pin Function
CN11
1V
DD
V
DD
V
DD
@ 3.3 V supply
2V
OUTCORE
V
DD_1V2
MCU Core PWR 1.2 V/1.1 V
3V
OUTVDD
V
DD_MCU
V
DD_MCU
: 1.8 V / 3.3 V
4 SMPS_V1 PA5 I/O for voltage selection
5 SMPS_EN PA4 I/O for SMPS enable
6 SMPS_SW PA7 I/O for switch control
7 SMPS_PG PA6 I/O for Power Good signal
8 GND GND Ground
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