PD4/UART1_CK1PD5/UART1_TX2PD6_UART1_RX3NRST4PA1/OSCIN5PA2/OSCOUT6VSS7VCAP8VDD9PA3/SPI_NSS10I2C_SDA/PB511I2C_SCL/PB412PC313PC414SPI_SCK/PC515SPI_MOSI/PC616SPI_MISO/PC717SWIM/PD118PD219PD320