| A1 | VSS_2 | GND | Ground Reference Pin (VSS_2) |
| A2 | PD0 | I/O | Multiplexed I/O & Peripheral Pin PD0 (SPI) |
| A3 | PD4 | I/O | Multiplexed I/O & Peripheral Pin PD4 (UART, SPI) |
| A4 | PD7 | I/O | Multiplexed I/O & Peripheral Pin PD7 (UART) |
| A5 | PB4 | I/O | Multiplexed I/O & Peripheral Pin PB4 (SPI, SWD/JTAG) |
| A6 | PB5 | I/O | Multiplexed I/O & Peripheral Pin PB5 (SPI, I2C) |
| A7 | BOOT0 | I | Input-Only Pin BOOT0 (General) |
| A8 | PE1 | I/O | Multiplexed I/O & Peripheral Pin PE1 (General) |
| A9 | VDD_3 | Power | Power Supply Input (VDD_3 — 3.3V VDD (Max 4.0V)) |
| B1 | PA15 | I/O | Multiplexed I/O & Peripheral Pin PA15 (SPI, SWD/JTAG) |
| B2 | PC12 | I/O | Multiplexed I/O & Peripheral Pin PC12 (UART, SPI) |
| B3 | PD5 | I/O | Multiplexed I/O & Peripheral Pin PD5 (UART) |
| B4 | PD6 | I/O | Multiplexed I/O & Peripheral Pin PD6 (UART) |
| B5 | PB3 | I/O | Multiplexed I/O & Peripheral Pin PB3 (SPI, SWD/JTAG) |
| B6 | PB7 | I/O | Multiplexed I/O & Peripheral Pin PB7 (UART, I2C) |
| B7 | PE0 | I/O | Multiplexed I/O & Peripheral Pin PE0 (General) |
| B8 | VDD_3 | Power | Power Supply Input (VDD_3 — 3.3V VDD (Max 4.0V)) |
| B9 | PE5 | I/O | Multiplexed I/O & Peripheral Pin PE5 (General) |
| C1 | VDD_2 | Power | Power Supply Input (VDD_2 — 3.3V VDD (Max 4.0V)) |
| C2 | PC11 | I/O | Multiplexed I/O & Peripheral Pin PC11 (UART, SPI) |
| C3 | PD2 | I/O | Multiplexed I/O & Peripheral Pin PD2 (UART) |
| C4 | PD3 | I/O | Multiplexed I/O & Peripheral Pin PD3 (UART, SPI) |
| C5 | PB6 | I/O | Multiplexed I/O & Peripheral Pin PB6 (UART, I2C) |
| C6 | PB9 | I/O | Multiplexed I/O & Peripheral Pin PB9 (I2C) |
| C7 | VSS_3 | GND | Ground Reference Pin (VSS_3) |
| C8 | PE4 | I/O | Multiplexed I/O & Peripheral Pin PE4 (General) |
| C9 | PC13 WKUP2 - | I/O | Multiplexed I/O & Peripheral Pin PC13 WKUP2 - (RTC/CLK) |
| D1 | PH2 | I/O | Multiplexed I/O & Peripheral Pin PH2 (General) |
| D2 | VSS_2 | GND | Ground Reference Pin (VSS_2) |
| D3 | PA14 | I/O | Multiplexed I/O & Peripheral Pin PA14 (SWD/JTAG) |
| D4 | PD1 | I/O | Multiplexed I/O & Peripheral Pin PD1 (SPI) |
| D5 | PB8 | I/O | Multiplexed I/O & Peripheral Pin PB8 (I2C) |
| D6 | PE2 | I/O | Multiplexed I/O & Peripheral Pin PE2 (General) |
| D7 | PE3 | I/O | Multiplexed I/O & Peripheral Pin PE3 (General) |
| D8 | PC14 - OSC32 IN(3)_ | I/O | Multiplexed I/O & Peripheral Pin PC14 - OSC32 IN(3)_ (RTC/CLK) |
| D9 | PC15 - OSC32_OUT | I/O | Multiplexed I/O & Peripheral Pin PC15 - OSC32_OUT (RTC/CLK) |
| E1 | PA11 | I/O | Multiplexed I/O & Peripheral Pin PA11 (USB, UART, SPI) |
| E2 | PA12 | I/O | Multiplexed I/O & Peripheral Pin PA12 (USB, UART, SPI) |
| E3 | PA13 | I/O | Multiplexed I/O & Peripheral Pin PA13 (SWD/JTAG) |
| E4 | PC10 | I/O | Multiplexed I/O & Peripheral Pin PC10 (UART, SPI) |
| E6 | PE6 - WKUP3 | I/O | Multiplexed I/O & Peripheral Pin PE6 - WKUP3 (RTC/CLK) |
| E7 | V LCD | I/O | Multiplexed I/O & Peripheral Pin V LCD (General) |
| E8 | VSS_5 | GND | Ground Reference Pin (VSS_5) |
| E9 | VDD_5 | Power | Power Supply Input (VDD_5 — 3.3V VDD (Max 4.0V)) |
| F1 | PA9 | I/O | Multiplexed I/O & Peripheral Pin PA9 (UART) |
| F2 | PA10 | I/O | Multiplexed I/O & Peripheral Pin PA10 (UART) |
| F3 | PA8 | I/O | Multiplexed I/O & Peripheral Pin PA8 (UART, RTC/CLK) |
| F4 | PC9 | I/O | Multiplexed I/O & Peripheral Pin PC9 (General) |
| F6 | PC0 | I/O | Multiplexed I/O & Peripheral Pin PC0 (ADC) |
| F7 | NRST | I | System Enable & Hardware Reset (NRST) |
| F8 | PH0OSC IN(4) -_ | I/O | Multiplexed I/O & Peripheral Pin PH0OSC IN(4) -_ (RTC/CLK) |
| F9 | PH1 - OSC OUT(4)_ | I/O | Multiplexed I/O & Peripheral Pin PH1 - OSC OUT(4)_ (RTC/CLK) |
| G1 | PC7 | I/O | Multiplexed I/O & Peripheral Pin PC7 (General) |
| G2 | PC8 | I/O | Multiplexed I/O & Peripheral Pin PC8 (General) |
| G3 | PD15 | I/O | Multiplexed I/O & Peripheral Pin PD15 (General) |
| G4 | PD11 | I/O | Multiplexed I/O & Peripheral Pin PD11 (UART) |
| G6 | VDDA | Power | Power Supply Input (VDDA — 3.3V VDD (Max 4.0V)) |
| G7 | VREF+ | Analog | Multiplexed I/O & Peripheral Pin VREF+ (General) |
| G8 | PC3 | I/O | Multiplexed I/O & Peripheral Pin PC3 (ADC) |
| G9 | PC2 | I/O | Multiplexed I/O & Peripheral Pin PC2 (ADC) |
| H1 | PC6 | I/O | Multiplexed I/O & Peripheral Pin PC6 (General) |
| H2 | PD13 | I/O | Multiplexed I/O & Peripheral Pin PD13 (General) |
| H3 | PD12 | I/O | Multiplexed I/O & Peripheral Pin PD12 (UART) |
| H4 | PD8 | I/O | Multiplexed I/O & Peripheral Pin PD8 (UART) |
| H6 | PA6 | I/O | Multiplexed I/O & Peripheral Pin PA6 (SPI, ADC) |
| H7 | PA3 | I/O | Multiplexed I/O & Peripheral Pin PA3 (UART, ADC) |
| H8 | VREF- | Analog | Multiplexed I/O & Peripheral Pin VREF- (General) |
| H9 | PC1 | I/O | Multiplexed I/O & Peripheral Pin PC1 (ADC) |
| J1 | PD14 | I/O | Multiplexed I/O & Peripheral Pin PD14 (General) |
| J2 | PD9 | I/O | Multiplexed I/O & Peripheral Pin PD9 (UART) |
| J3 | PB13 | I/O | Multiplexed I/O & Peripheral Pin PB13 (UART, SPI, ADC) |
| J4 | PB12 | I/O | Multiplexed I/O & Peripheral Pin PB12 (UART, SPI, I2C, ADC) |
| J5 | PE10 | I/O | Multiplexed I/O & Peripheral Pin PE10 (ADC, PWM) |
| J6 | PB0 | I/O | Multiplexed I/O & Peripheral Pin PB0 (ADC) |
| J7 | PA4 | I/O | Multiplexed I/O & Peripheral Pin PA4 (UART, SPI, ADC, DAC) |
| J8 | PA2 | I/O | Multiplexed I/O & Peripheral Pin PA2 (UART, ADC) |
| J9 | VSSA | GND | Ground Reference Pin (VSSA) |
| K1 | PD10 | I/O | Multiplexed I/O & Peripheral Pin PD10 (UART) |
| K2 | PB15 | I/O | Multiplexed I/O & Peripheral Pin PB15 (SPI, ADC, RTC/CLK) |
| K3 | VDD_1 | Power | Power Supply Input (VDD_1 — 3.3V VDD (Max 4.0V)) |
| K4 | PE15 | I/O | Multiplexed I/O & Peripheral Pin PE15 (SPI) |
| K5 | PE13 | I/O | Multiplexed I/O & Peripheral Pin PE13 (SPI) |
| K6 | PB1 | I/O | Multiplexed I/O & Peripheral Pin PB1 (ADC) |
| K7 | PA7 | I/O | Multiplexed I/O & Peripheral Pin PA7 (SPI, ADC) |
| K8 | VSS_4 | GND | Ground Reference Pin (VSS_4) |
| K9 | PA0WKUP1 - | I/O | Multiplexed I/O & Peripheral Pin PA0WKUP1 - (UART, ADC, RTC/CLK) |
| L1 | PB14 | I/O | Multiplexed I/O & Peripheral Pin PB14 (UART, SPI, ADC) |
| L2 | VSS_1 | GND | Ground Reference Pin (VSS_1) |
| L3 | PB11 | I/O | Multiplexed I/O & Peripheral Pin PB11 (UART, I2C) |
| L4 | PE14 | I/O | Multiplexed I/O & Peripheral Pin PE14 (SPI) |
| L5 | PE11 | I/O | Multiplexed I/O & Peripheral Pin PE11 (PWM) |
| L6 | PE7 | I/O | Multiplexed I/O & Peripheral Pin PE7 (ADC) |
| L7 | PC4 | I/O | Multiplexed I/O & Peripheral Pin PC4 (ADC) |
| L8 | VDD_4 | Power | Power Supply Input (VDD_4 — 3.3V VDD (Max 4.0V)) |
| L9 | PA1 | I/O | Multiplexed I/O & Peripheral Pin PA1 (UART, ADC) |
| M1 | VSS_1 | GND | Ground Reference Pin (VSS_1) |
| M2 | PB10 | I/O | Multiplexed I/O & Peripheral Pin PB10 (UART, I2C) |
| M3 | PE12 | I/O | Multiplexed I/O & Peripheral Pin PE12 (SPI) |
| M4 | PE9 | I/O | Multiplexed I/O & Peripheral Pin PE9 (ADC, PWM) |
| M5 | PE8 | I/O | Multiplexed I/O & Peripheral Pin PE8 (ADC) |
| M6 | PB2 | I/O | Multiplexed I/O & Peripheral Pin PB2 (ADC) |
| M7 | PC5 | I/O | Multiplexed I/O & Peripheral Pin PC5 (ADC) |
| M8 | PA5 | I/O | Multiplexed I/O & Peripheral Pin PA5 (SPI, ADC, DAC) |
| M9 | VDD_4 | Power | Power Supply Input (VDD_4 — 3.3V VDD (Max 4.0V)) |