PC0,PC0 PC1,PC1 PC2,PC2 PC3,PC3 PC4,PC4 PC5,PC5 PC6,PC6 PC7,PC7 PC8,PC8 PC9,PC9 PC10,PC10 PC11,PC11 PC12,PC12 PC13,PC13 PC14,PC14 PC15,PC15 PB0,PB0 PB1,PB1 PB2,PB2 PB3,PB3 PB4,PB4 PB5,PB5 PB6,PB6 PB7,PB7 PB8,PB8 PB9,PB9 PB10,PB10 PB11,PB11 PB12,PB12 VUSB,PB13 USB1D_N,PB14 USB1D_P,PB15 PA0,PA0 PA1,PA1 PA2,PA2 PA3,PA3 PA4,PA4 PA5,PA5 PA6,PA6 PA7,PA7 PA8,PA8 PA9,PA9 PA10,PA10 PA11,PA11 PA12,PA12 PD2,PD2 BOOT0,BOOT0 PA15,PA15 UART3_TX,PD8 UART3_RX,PD9 UART3_RTS,PD12 UART3_CTS,PD11