PB121PB132PB143PB154PA85PA96PA107PA118PA129PA1510PB311PB412PB513PB614PB715PB816PB917+5V18GND19+3.3V20VBAT21PC1322PC1423PC1524PA025PA126PA227PA328PA429PA530PA631PA732PB033PB134PB1035PB1136RESET37+3.3V38GND39GND40