| 1 | PA15/TX2_ | I/O | Multiplexed I/O & Peripheral Pin PA15/TX2_ (General) |
| 2 | PA16 I/O PA16 | I/O | Multiplexed I/O & Peripheral Pin PA16 I/O PA16 (General) |
| 3 | PA17 I/O PA17 | I/O | Multiplexed I/O & Peripheral Pin PA17 I/O PA17 (UART) |
| 4 | PA18 I/O PA18 | I/O | Multiplexed I/O & Peripheral Pin PA18 I/O PA18 (General) |
| 5 | PA19 I/O PA19 | I/O | Multiplexed I/O & Peripheral Pin PA19 I/O PA19 (General) |
| 6 | PA20 I/O PA20 | I/O | Multiplexed I/O & Peripheral Pin PA20 I/O PA20 (General) |
| 7 | PA21 I/O PA21 | I/O | Multiplexed I/O & Peripheral Pin PA21 I/O PA21 (UART) |
| 8 | PC0 I/O/A PC0 | I/O | Multiplexed I/O & Peripheral Pin PC0 I/O/A PC0 (General) |
| 9 | PC1 I/O/A PC1 | I/O | Multiplexed I/O & Peripheral Pin PC1 I/O/A PC1 (General) |
| 10 | PC2 I/O/A PC2 | I/O | Multiplexed I/O & Peripheral Pin PC2 I/O/A PC2 (UART) |
| 11 | PA1/RTS2/T2C2/C1O/CTS2_/O1N2/O2N2/A1 | I/O | Multiplexed I/O & Peripheral Pin PA1/RTS2/T2C2/C1O/CTS2_/O1N2/O2N2/A1 (UART) |
| 12 | PA2/TX2/T2C3/O2O1/RTS2_/T2ET_/C3N0/A2 | I/O | Multiplexed I/O & Peripheral Pin PA2/TX2/T2C3/O2O1/RTS2_/T2ET_/C3N0/A2 (UART) |
| 13 | PA23 I/O/A PA23 | I/O | Multiplexed I/O & Peripheral Pin PA23 I/O/A PA23 (General) |
| 14 | PA0 I/O/A PA0 | I/O | Multiplexed I/O & Peripheral Pin PA0 I/O/A PA0 (UART) |
| 15 | PA5/SCK/TX4_/CTS4_/O2N0/A5 | I/O | Multiplexed I/O & Peripheral Pin PA5/SCK/TX4_/CTS4_/O2N0/A5 (UART, SPI) |
| 16 | PA6/MISO/T3C1/RTS4_/T1BK_/O1N0/A6 | I/O | Multiplexed I/O & Peripheral Pin PA6/MISO/T3C1/RTS4_/T1BK_/O1N0/A6 (UART, SPI) |
| 17 | PA3 I/O/A PA3 | I/O | Multiplexed I/O & Peripheral Pin PA3 I/O/A PA3 (UART) |
| 18 | PC4 I/O PC4 | I/O | Multiplexed I/O & Peripheral Pin PC4 I/O PC4 (General) |
| 19 | PC5 I/O PC5 | I/O | Multiplexed I/O & Peripheral Pin PC5 I/O PC5 (SPI) |
| 20 | PA4 I/O/A PA4 | I/O | Multiplexed I/O & Peripheral Pin PA4 I/O/A PA4 (UART) |
| 21 | PA5 I/O/A PA5 | I/O | Multiplexed I/O & Peripheral Pin PA5 I/O/A PA5 (UART, SPI) |
| 22 | PA6 I/O/A PA6 | I/O | Multiplexed I/O & Peripheral Pin PA6 I/O/A PA6 (UART, SPI) |
| 23 | PB3/TX3/C3O/T2C3_/T2C3N_/O2P1 | I/O | Multiplexed I/O & Peripheral Pin PB3/TX3/C3O/T2C3_/T2C3N_/O2P1 (General) |
| 24 | PB4/T2C4_/T3C1_/T2BK_/RX3/O1P2 | I/O | Multiplexed I/O & Peripheral Pin PB4/T2C4_/T3C1_/T2BK_/RX3/O1P2 (General) |
| 25 | PB5/O1O1/T3C2_/T1BK | I/O | Multiplexed I/O & Peripheral Pin PB5/O1O1/T3C2_/T1BK (General) |
| 26 | PB6/T1C1N/CTS3/O1N1 | I/O | Multiplexed I/O & Peripheral Pin PB6/T1C1N/CTS3/O1N1 (UART) |
| 27 | PB7/T1C2N/RTS3_/O2P2 | I/O | Multiplexed I/O & Peripheral Pin PB7/T1C2N/RTS3_/O2P2 (UART) |
| 28 | PB8/T1C3N/O1P1 | I/O | Multiplexed I/O & Peripheral Pin PB8/T1C3N/O1P1 (General) |
| 29 | PB9/T1C1/MCO/TX4_ | I/O | Multiplexed I/O & Peripheral Pin PB9/T1C1/MCO/TX4_ (RTC/CLK) |
| 30 | PB10/TX1/T1C2 | I/O | Multiplexed I/O & Peripheral Pin PB10/TX1/T1C2 (General) |
| 31 | PB11/T1C3/T2C1N_/RX1 | I/O | Multiplexed I/O & Peripheral Pin PB11/T1C3/T2C1N_/RX1 (General) |
| 32 | PC16/UDM/T1C4/TX4_/I2C_/RX4_/CTS1/PC11 | I/O | Multiplexed I/O & Peripheral Pin PC16/UDM/T1C4/TX4_/I2C_/RX4_/CTS1/PC11 (UART, I2C) |
| 33 | PC17/UDP/RTS1/TX4_/I2C_/RX4_/T1ET/PC10 | I/O | Multiplexed I/O & Peripheral Pin PC17/UDP/RTS1/TX4_/I2C_/RX4_/T1ET/PC10 (UART, I2C) |
| 34 | PC18/DIO/TX3_/T2C1N_/T3C2_/I2C_/T1ET_ | I/O | Multiplexed I/O & Peripheral Pin PC18/DIO/TX3_/T2C1N_/T3C2_/I2C_/T1ET_ (I2C) |
| 35 | PB12/T1C4_/T2C2N_ | I/O | Multiplexed I/O & Peripheral Pin PB12/T1C4_/T2C2N_ (General) |
| 36 | PB13/TX4_ | I/O | Multiplexed I/O & Peripheral Pin PB13/TX4_ (General) |
| 37 | PC19/DCK/T2C1_/T3C1_/I2C_/RX3_/RX4_/C1P0 | I/O | Multiplexed I/O & Peripheral Pin PC19/DCK/T2C1_/T3C1_/I2C_/RX3_/RX4_/C1P0 (I2C) |
| 38 | PC14/CC1/T1C3_/T2C2_ | I/O | Multiplexed I/O & Peripheral Pin PC14/CC1/T1C3_/T2C2_ (General) |
| 39 | PC15/CC2/T2C3_/T1ET_ | I/O | Multiplexed I/O & Peripheral Pin PC15/CC2/T2C3_/T1ET_ (General) |
| 40 | PA8/RTS4/RTS1_ | I/O | Multiplexed I/O & Peripheral Pin PA8/RTS4/RTS1_ (UART) |
| 41 | PA9/MISO_/RX4_/CTS1_/T2BK_ | I/O | Multiplexed I/O & Peripheral Pin PA9/MISO_/RX4_/CTS1_/T2BK_ (UART, SPI) |
| 42 | PA10/SCL/TX1_/MOSI_/RX4_ | I/O | Multiplexed I/O & Peripheral Pin PA10/SCL/TX1_/MOSI_/RX4_ (SPI, I2C) |
| 43 | PA11/SDA/SCK_/RX1_/C2P1 | I/O | Multiplexed I/O & Peripheral Pin PA11/SDA/SCK_/RX1_/C2P1 (SPI, I2C) |
| 44 | PA12/CS_/T2C2_/T2C1N_/C2P0 | I/O | Multiplexed I/O & Peripheral Pin PA12/CS_/T2C2_/T2C1N_/C2P0 (General) |
| 45 | PA13/SCL_/RTS4_/CTS1_/T2C3_/T2C2N_/C3P0 | I/O | Multiplexed I/O & Peripheral Pin PA13/SCL_/RTS4_/CTS1_/T2C3_/T2C2N_/C3P0 (UART, I2C) |
| 46 | PA14/SDA_/RTS1_/T2C3N_/CTS4_/C3P1 | I/O | Multiplexed I/O & Peripheral Pin PA14/SDA_/RTS1_/T2C3N_/CTS4_/C3P1 (UART, I2C) |
| 47 | GND | GND | Ground Reference Pin (GND) |
| 48 | VDD | Power | Power Supply Input (VDD — 2V~5.5V) |