Serial Wire Debug
PA13 is SWDIO and PA14 is SWCLK. The 3.3 V board rail is a reference for a compatible probe.
Match the STM32_F4VE marking and 48-contact J2 and J3 headers. The board exposes separate LCD, microSD, SWD/JTAG, radio-module and serial connectors.
Routes to MCU PA6. Choose the applicable GPIO or peripheral function in the MCU documentation.
| Pin | Signal | Direction | Function |
|---|---|---|---|
| J2-1 | 5V Power | Power | Connects to 5V. Use the specified board power connection. |
| J2-2 | 5V Power | Power | Connects to 5V. Use the specified board power connection. |
| J2-3 | 5V Power | Power | Connects to 5V. Use the specified board power connection. |
| J2-4 | 5V Power | Power | Connects to 5V. Use the specified board power connection. |
| J2-5 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J2-6 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J2-7 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J2-8 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J2-9 | GND Return | Return | Connects to the board’s ground plane. |
| J2-10 | GND Return | Return | Connects to the board’s ground plane. |
| J2-11 | PE2 Configurable I/O | Configurable I/O | Routes to MCU PE2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-12 | PE3 Configurable I/O | Configurable I/O | Routes to MCU PE3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-13 | PE4 Configurable I/O | Configurable I/O | Routes to MCU PE4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-14 | PE5 Configurable I/O | Configurable I/O | Routes to MCU PE5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-15 | PE6 Configurable I/O | Configurable I/O | Routes to MCU PE6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-16 | PC13 Configurable I/O | Configurable I/O | Routes to MCU PC13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-17 | PC0 Configurable I/O | Configurable I/O | Routes to MCU PC0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-18 | PC1 Configurable I/O | Configurable I/O | Routes to MCU PC1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-19 | PC2 Configurable I/O | Configurable I/O | Routes to MCU PC2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-20 | PC3 Configurable I/O | Configurable I/O | Routes to MCU PC3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-21 | VR- Circuit dependent | Circuit dependent | PCB net destination is VR-. Check the connected circuit before driving the contact. |
| J2-22 | VR+ Circuit dependent | Circuit dependent | PCB net destination is VR+. Check the connected circuit before driving the contact. |
| J2-23 | PA0 Configurable I/O | Configurable I/O | Routes to MCU PA0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-24 | PA1 Configurable I/O | Configurable I/O | Routes to MCU PA1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-25 | PA2 Configurable I/O | Configurable I/O | Routes to MCU PA2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-26 | PA3 Configurable I/O | Configurable I/O | Routes to MCU PA3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-27 | PA4 Configurable I/O | Configurable I/O | Routes to MCU PA4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-28 | PA5 Configurable I/O | Configurable I/O | Routes to MCU PA5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-29 | PA6 Configurable I/O | Configurable I/O | Routes to MCU PA6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-30 | PA7 Configurable I/O | Configurable I/O | Routes to MCU PA7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-31 | PC4 Configurable I/O | Configurable I/O | Routes to MCU PC4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-32 | PC5 Configurable I/O | Configurable I/O | Routes to MCU PC5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-33 | PB0 Configurable I/O | Configurable I/O | Routes to MCU PB0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-34 | PB1 Configurable I/O | Configurable I/O | Routes to MCU PB1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-35 | PE7 Configurable I/O | Configurable I/O | Routes to MCU PE7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-36 | PE8 Configurable I/O | Configurable I/O | Routes to MCU PE8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-37 | PE9 Configurable I/O | Configurable I/O | Routes to MCU PE9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-38 | PE10 Configurable I/O | Configurable I/O | Routes to MCU PE10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-39 | PE11 Configurable I/O | Configurable I/O | Routes to MCU PE11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-40 | PE12 Configurable I/O | Configurable I/O | Routes to MCU PE12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-41 | PE13 Configurable I/O | Configurable I/O | Routes to MCU PE13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-42 | PE14 Configurable I/O | Configurable I/O | Routes to MCU PE14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-43 | PE15 Configurable I/O | Configurable I/O | Routes to MCU PE15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-44 | PB10 Configurable I/O | Configurable I/O | Routes to MCU PB10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-45 | PB11 Configurable I/O | Configurable I/O | Routes to MCU PB11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-46 | PB12 Configurable I/O | Configurable I/O | Routes to MCU PB12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-47 | PB13 Configurable I/O | Configurable I/O | Routes to MCU PB13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-48 | PB14 Configurable I/O | Configurable I/O | Routes to MCU PB14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-1 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J3-2 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J3-3 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J3-4 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J3-5 | BT0 Circuit dependent | Circuit dependent | PCB net destination is BOOT0. Check the connected circuit before driving the contact. |
| J3-6 | BT1 Configurable I/O | Configurable I/O | Routes to MCU PE2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-7 | GND Return | Return | Connects to the board’s ground plane. |
| J3-8 | GND Return | Return | Connects to the board’s ground plane. |
| J3-9 | GND Return | Return | Connects to the board’s ground plane. |
| J3-10 | GND Return | Return | Connects to the board’s ground plane. |
| J3-11 | PE1 Configurable I/O | Configurable I/O | Routes to MCU PE1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-12 | PE0 Configurable I/O | Configurable I/O | Routes to MCU PE0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-13 | PB9 Configurable I/O | Configurable I/O | Routes to MCU PB9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-14 | PB8 Configurable I/O | Configurable I/O | Routes to MCU PB8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-15 | PB7 Configurable I/O | Configurable I/O | Routes to MCU PB7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-16 | PB6 Configurable I/O | Configurable I/O | Routes to MCU PB6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-17 | PB5 Configurable I/O | Configurable I/O | Routes to MCU PB5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-18 | PB3 Configurable I/O | Configurable I/O | Routes to MCU PB3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-19 | PD7 Configurable I/O | Configurable I/O | Routes to MCU PD7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-20 | PD6 Configurable I/O | Configurable I/O | Routes to MCU PD6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-21 | PD5 Configurable I/O | Configurable I/O | Routes to MCU PD5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-22 | PD4 Configurable I/O | Configurable I/O | Routes to MCU PD4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-23 | PD3 Configurable I/O | Configurable I/O | Routes to MCU PD3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-24 | PD2 Configurable I/O | Configurable I/O | Routes to MCU PD2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-25 | PD1 Configurable I/O | Configurable I/O | Routes to MCU PD1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-26 | PD0 Configurable I/O | Configurable I/O | Routes to MCU PD0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-27 | PC12 Configurable I/O | Configurable I/O | Routes to MCU PC12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-28 | PC11 Configurable I/O | Configurable I/O | Routes to MCU PC11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-29 | PC10 Configurable I/O | Configurable I/O | Routes to MCU PC10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-30 | PA15 Configurable I/O | Configurable I/O | Routes to MCU PA15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-31 | PA12 Configurable I/O | Configurable I/O | Routes to MCU PA12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-32 | PA11 Configurable I/O | Configurable I/O | Routes to MCU PA11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-33 | PA10 Configurable I/O | Configurable I/O | Routes to MCU PA10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-34 | PA9 Configurable I/O | Configurable I/O | Routes to MCU PA9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-35 | PA8 Configurable I/O | Configurable I/O | Routes to MCU PA8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-36 | PC9 Configurable I/O | Configurable I/O | Routes to MCU PC9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-37 | PC8 Configurable I/O | Configurable I/O | Routes to MCU PC8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-38 | PC7 Configurable I/O | Configurable I/O | Routes to MCU PC7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-39 | PC6 Configurable I/O | Configurable I/O | Routes to MCU PC6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-40 | PD15 Configurable I/O | Configurable I/O | Routes to MCU PD15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-41 | PD14 Configurable I/O | Configurable I/O | Routes to MCU PD14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-42 | PD13 Configurable I/O | Configurable I/O | Routes to MCU PD13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-43 | PD12 Configurable I/O | Configurable I/O | Routes to MCU PD12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-44 | PD11 Configurable I/O | Configurable I/O | Routes to MCU PD11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-45 | PD10 Configurable I/O | Configurable I/O | Routes to MCU PD10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-46 | PD9 Configurable I/O | Configurable I/O | Routes to MCU PD9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-47 | PD8 Configurable I/O | Configurable I/O | Routes to MCU PD8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-48 | PB15 Configurable I/O | Configurable I/O | Routes to MCU PB15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-1 | VBUS Power | Power | Connects to 5V. Use the specified board power connection. |
| J4-2 | D- Bidirectional | Bidirectional | USB data line. PCB net destination is PA11. |
| J4-3 | D+ Bidirectional | Bidirectional | USB data line. PCB net destination is PA12. |
| J4-4 | ID Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| J4-5 | GND Return | Return | Connects to the board’s ground plane. |
| P1-1 | VCC Power | Power | Connects to 3V3. Use the specified board power connection. |
| P1-2 | VCC Power | Power | Connects to 3V3. Use the specified board power connection. |
| P1-3 | TRST Configurable I/O | Configurable I/O | Routes to MCU PB4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| P1-4 | GND Return | Return | Connects to the board’s ground plane. |
| P1-5 | TDI Configurable I/O | Configurable I/O | Routes to MCU PA15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| P1-6 | GND Return | Return | Connects to the board’s ground plane. |
| P1-7 | TMS / SWDIO Debug | Debug | Connects to MCU PA13 on the debug interface. |
| P1-8 | GND Return | Return | Connects to the board’s ground plane. |
| P1-9 | TCLK / SWCLK Debug | Debug | Connects to MCU PA14 on the debug interface. |
| P1-10 | GND Return | Return | Connects to the board’s ground plane. |
| P1-11 | RTCK Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| P1-12 | GND Return | Return | Connects to the board’s ground plane. |
| P1-13 | TDO / SWO Configurable I/O | Configurable I/O | Routes to MCU PB3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| P1-14 | GND Return | Return | Connects to the board’s ground plane. |
| P1-15 | RESET Active-low reset | Active-low reset | Connects to MCU NRST. Use a compatible open-drain reset signal. |
| P1-16 | GND Return | Return | Connects to the board’s ground plane. |
| P1-17 | NC Unconnected | Unconnected | The schematic documents no connection at this position. |
| P1-18 | GND Return | Return | Connects to the board’s ground plane. |
| P1-19 | NC Unconnected | Unconnected | The schematic documents no connection at this position. |
| P1-20 | GND Return | Return | Connects to the board’s ground plane. |
| U5-1 | DAT2 Configurable I/O | Configurable I/O | Routes to MCU PC10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| U5-2 | CD/DAT3 Configurable I/O | Configurable I/O | Routes to MCU PC11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| U5-3 | CMD Configurable I/O | Configurable I/O | Routes to MCU PD2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| U5-4 | VDD Power | Power | Connects to 3V3. Use the specified board power connection. |
| U5-5 | CLK Configurable I/O | Configurable I/O | Routes to MCU PC12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| U5-6 | VSS Return | Return | Connects to the board’s ground plane. |
| U5-7 | DAT0 Configurable I/O | Configurable I/O | Routes to MCU PC8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| U5-8 | DAT1 Configurable I/O | Configurable I/O | Routes to MCU PC9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| U5-9 | CD Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| U5-10 | Body Return | Return | Connects to the board’s ground plane. |
| J1-1 | GND Return | Return | Connects to the board’s ground plane. |
| J1-2 | RST Circuit dependent | Circuit dependent | PCB net destination is Reset button. Check the connected circuit before driving the contact. |
| J1-3 | FSMC D15 Configurable I/O | Configurable I/O | Routes to MCU PD10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-4 | FSMC D14 Configurable I/O | Configurable I/O | Routes to MCU PD9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-5 | FSMC D13 Configurable I/O | Configurable I/O | Routes to MCU PD8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-6 | FSMC D12 Configurable I/O | Configurable I/O | Routes to MCU PE15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-7 | FSMC D11 Configurable I/O | Configurable I/O | Routes to MCU PE14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-8 | FSMC D10 Configurable I/O | Configurable I/O | Routes to MCU PE13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-9 | FSMC D9 Configurable I/O | Configurable I/O | Routes to MCU PE12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-10 | FSMC D8 Configurable I/O | Configurable I/O | Routes to MCU PE11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-11 | FSMC D7 Configurable I/O | Configurable I/O | Routes to MCU PE10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-12 | FSMC D6 Configurable I/O | Configurable I/O | Routes to MCU PE9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-13 | FSMC D5 Configurable I/O | Configurable I/O | Routes to MCU PE8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-14 | FSMC D4 Configurable I/O | Configurable I/O | Routes to MCU PE7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-15 | FSMC D3 Configurable I/O | Configurable I/O | Routes to MCU PD1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-16 | FSMC D2 Configurable I/O | Configurable I/O | Routes to MCU PD0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-17 | FSMC D1 Configurable I/O | Configurable I/O | Routes to MCU PD15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-18 | FSMC D0 Configurable I/O | Configurable I/O | Routes to MCU PD14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-19 | FSMC NOE Configurable I/O | Configurable I/O | Routes to MCU PD4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-20 | FSMC NWE Configurable I/O | Configurable I/O | Routes to MCU PD5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-21 | FSMC A18 Configurable I/O | Configurable I/O | Routes to MCU PD13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-22 | FSMC NE1 Configurable I/O | Configurable I/O | Routes to MCU PD7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-23 | Touch CLK Configurable I/O | Configurable I/O | Routes to MCU PB13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-24 | Touch CS Configurable I/O | Configurable I/O | Routes to MCU PB12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-25 | Touch MOSI Configurable I/O | Configurable I/O | Routes to MCU PB15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-26 | Touch MISO Configurable I/O | Configurable I/O | Routes to MCU PB14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-27 | Touch PEN Configurable I/O | Configurable I/O | Routes to MCU PC5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-28 | LCD Backlight Configurable I/O | Configurable I/O | Routes to MCU PB1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-29 | VBAT Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| J1-30 | GND Return | Return | Connects to the board’s ground plane. |
| J1-31 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J1-32 | GND Return | Return | Connects to the board’s ground plane. |
| JP2-1 | GND Return | Return | Connects to the board’s ground plane. |
| JP2-2 | VCC Power | Power | Connects to 3V3. Use the specified board power connection. |
| JP2-3 | CE Configurable I/O | Configurable I/O | Routes to MCU PB6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| JP2-4 | CSN Configurable I/O | Configurable I/O | Routes to MCU PB7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| JP2-5 | SCK Configurable I/O | Configurable I/O | Routes to MCU PB3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| JP2-6 | MOSI Configurable I/O | Configurable I/O | Routes to MCU PB5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| JP2-7 | MISO Configurable I/O | Configurable I/O | Routes to MCU PB4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| JP2-8 | IRQ Configurable I/O | Configurable I/O | Routes to MCU PB8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J6-1 | VCC Power | Power | Connects to 5V. Use the specified board power connection. |
| J6-2 | GND Return | Return | Connects to the board’s ground plane. |
| J6-3 | RX Configurable I/O | Configurable I/O | Routes to MCU PA10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J6-4 | TX Configurable I/O | Configurable I/O | Routes to MCU PA9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
PA13 is SWDIO and PA14 is SWCLK. The 3.3 V board rail is a reference for a compatible probe.
PA9 is TX and PA10 is RX in the default USART1 mapping. Select the matching firmware configuration.
| Parameter | Limit | Conditions and source |
|---|---|---|
| Board logic rail3.3 V nominal | 3.3 V nominal | Check the fitted regulator and MCU datasheet before attaching an external circuit. USB is the only supply used in the example. STM32 F4VE V2.0 connector map |
| External high-speed oscillator8 MHz | 8 MHz | Use the correct HSE frequency in firmware clock calculations. STM32 F4VE V2.0 connector map |
The maps follow the listed PCB variants. Match the board markings and connector positions to the referenced schematic before applying power.