Serial Wire Debug
PA13 is SWDIO and PA14 is SWCLK. The 3.3 V board rail is a reference for a compatible probe.
CZ miniSTM32 pinout
VE-EK uses STM32F103VET6 and J1/J2 expansion headers. The PCB has separate native and USB-to-serial connectors.
CZ miniSTM32F103VE-EK
184 contacts Current packageCZ miniSTM32F103ZE-EK 186 contacts
CZ miniSTM32F103VE-EK pinout
Header 1 · J1
Header 2 · J2
Main USB connector · CN3
Serial USB connector · CN4
JTAG header · CN1
SD-card connector · CN2
TFT LCD header · J3
nRF24L01 module header · J8
ESP-1 module header · J9
J2-32 · PA14
Routes to MCU PA14. Choose the applicable GPIO or peripheral function in the MCU documentation.
All 184 pins
| Pin | Signal | Direction | Function |
|---|---|---|---|
| J1-1 | GND Return | Return | Connects to the board’s ground plane. |
| J1-2 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J1-3 | PC0 Configurable I/O | Configurable I/O | Routes to MCU PC0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-4 | PC1 Configurable I/O | Configurable I/O | Routes to MCU PC1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-5 | PC2 Configurable I/O | Configurable I/O | Routes to MCU PC2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-6 | PC3 Configurable I/O | Configurable I/O | Routes to MCU PC3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-7 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J1-8 | VREF Circuit dependent | Circuit dependent | PCB net destination is VREF+. Check the connected circuit before driving the contact. |
| J1-9 | PA0 Configurable I/O | Configurable I/O | Routes to MCU PA0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-10 | PA1 Configurable I/O | Configurable I/O | Routes to MCU PA1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-11 | PA2 Configurable I/O | Configurable I/O | Routes to MCU PA2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-12 | PA3 Configurable I/O | Configurable I/O | Routes to MCU PA3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-13 | PA4 Configurable I/O | Configurable I/O | Routes to MCU PA4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-14 | PA5 Configurable I/O | Configurable I/O | Routes to MCU PA5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-15 | PA6 Configurable I/O | Configurable I/O | Routes to MCU PA6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-16 | PA7 Configurable I/O | Configurable I/O | Routes to MCU PA7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-17 | PC4 Configurable I/O | Configurable I/O | Routes to MCU PC4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-18 | PC5 Configurable I/O | Configurable I/O | Routes to MCU PC5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-19 | PB0 Configurable I/O | Configurable I/O | Routes to MCU PB0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-20 | PB1 Configurable I/O | Configurable I/O | Routes to MCU PB1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-21 | PB2 Configurable I/O | Configurable I/O | Routes to MCU PB2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-22 | PE7 Configurable I/O | Configurable I/O | Routes to MCU PE7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-23 | PE8 Configurable I/O | Configurable I/O | Routes to MCU PE8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-24 | PE9 Configurable I/O | Configurable I/O | Routes to MCU PE9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-25 | PE10 Configurable I/O | Configurable I/O | Routes to MCU PE10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-26 | PE11 Configurable I/O | Configurable I/O | Routes to MCU PE11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-27 | PE12 Configurable I/O | Configurable I/O | Routes to MCU PE12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-28 | PE13 Configurable I/O | Configurable I/O | Routes to MCU PE13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-29 | PE14 Configurable I/O | Configurable I/O | Routes to MCU PE14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-30 | PE15 Configurable I/O | Configurable I/O | Routes to MCU PE15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-31 | PB10 Configurable I/O | Configurable I/O | Routes to MCU PB10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-32 | PB11 Configurable I/O | Configurable I/O | Routes to MCU PB11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-33 | PB12 Configurable I/O | Configurable I/O | Routes to MCU PB12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-34 | PB13 Configurable I/O | Configurable I/O | Routes to MCU PB13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-35 | PB14 Configurable I/O | Configurable I/O | Routes to MCU PB14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-36 | PB15 Configurable I/O | Configurable I/O | Routes to MCU PB15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-37 | PD8 Configurable I/O | Configurable I/O | Routes to MCU PD8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-38 | PD9 Configurable I/O | Configurable I/O | Routes to MCU PD9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-39 | PD10 Configurable I/O | Configurable I/O | Routes to MCU PD10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-40 | PD11 Configurable I/O | Configurable I/O | Routes to MCU PD11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-41 | PD12 Configurable I/O | Configurable I/O | Routes to MCU PD12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-42 | PD13 Configurable I/O | Configurable I/O | Routes to MCU PD13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-43 | PD14 Configurable I/O | Configurable I/O | Routes to MCU PD14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-44 | PD15 Configurable I/O | Configurable I/O | Routes to MCU PD15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-45 | GND Return | Return | Connects to the board’s ground plane. |
| J1-46 | 5V Power | Power | Connects to 5V. Use the specified board power connection. |
| J2-1 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J2-2 | GND Return | Return | Connects to the board’s ground plane. |
| J2-3 | PC15 Configurable I/O | Configurable I/O | Routes to MCU PC15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-4 | PC14 Configurable I/O | Configurable I/O | Routes to MCU PC14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-5 | PC13 Configurable I/O | Configurable I/O | Routes to MCU PC13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-6 | PE6 Configurable I/O | Configurable I/O | Routes to MCU PE6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-7 | PE5 Configurable I/O | Configurable I/O | Routes to MCU PE5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-8 | PE4 Configurable I/O | Configurable I/O | Routes to MCU PE4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-9 | PE3 Configurable I/O | Configurable I/O | Routes to MCU PE3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-10 | PE2 Configurable I/O | Configurable I/O | Routes to MCU PE2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-11 | PE1 Configurable I/O | Configurable I/O | Routes to MCU PE1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-12 | PE0 Configurable I/O | Configurable I/O | Routes to MCU PE0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-13 | PB9 Configurable I/O | Configurable I/O | Routes to MCU PB9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-14 | PB8 Configurable I/O | Configurable I/O | Routes to MCU PB8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-15 | PB7 Configurable I/O | Configurable I/O | Routes to MCU PB7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-16 | PB6 Configurable I/O | Configurable I/O | Routes to MCU PB6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-17 | PB5 Configurable I/O | Configurable I/O | Routes to MCU PB5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-18 | PB4 Configurable I/O | Configurable I/O | Routes to MCU PB4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-19 | PB3 Configurable I/O | Configurable I/O | Routes to MCU PB3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-20 | PD7 Configurable I/O | Configurable I/O | Routes to MCU PD7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-21 | PD6 Configurable I/O | Configurable I/O | Routes to MCU PD6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-22 | PD5 Configurable I/O | Configurable I/O | Routes to MCU PD5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-23 | PD4 Configurable I/O | Configurable I/O | Routes to MCU PD4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-24 | PD3 Configurable I/O | Configurable I/O | Routes to MCU PD3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-25 | PD2 Configurable I/O | Configurable I/O | Routes to MCU PD2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-26 | PD1 Configurable I/O | Configurable I/O | Routes to MCU PD1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-27 | PD0 Configurable I/O | Configurable I/O | Routes to MCU PD0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-28 | PC12 Configurable I/O | Configurable I/O | Routes to MCU PC12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-29 | PC11 Configurable I/O | Configurable I/O | Routes to MCU PC11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-30 | PC10 Configurable I/O | Configurable I/O | Routes to MCU PC10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-31 | PA15 Configurable I/O | Configurable I/O | Routes to MCU PA15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-32 | PA14 Configurable I/O | Configurable I/O | Routes to MCU PA14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-33 | PA13 Configurable I/O | Configurable I/O | Routes to MCU PA13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-34 | PA12 Configurable I/O | Configurable I/O | Routes to MCU PA12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-35 | PA11 Configurable I/O | Configurable I/O | Routes to MCU PA11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-36 | PA10 Configurable I/O | Configurable I/O | Routes to MCU PA10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-37 | PA9 Configurable I/O | Configurable I/O | Routes to MCU PA9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-38 | PA8 Configurable I/O | Configurable I/O | Routes to MCU PA8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-39 | PC9 Configurable I/O | Configurable I/O | Routes to MCU PC9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-40 | PC8 Configurable I/O | Configurable I/O | Routes to MCU PC8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-41 | PC7 Configurable I/O | Configurable I/O | Routes to MCU PC7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-42 | PC6 Configurable I/O | Configurable I/O | Routes to MCU PC6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-43 | 5V Power | Power | Connects to 5V. Use the specified board power connection. |
| J2-44 | GND Return | Return | Connects to the board’s ground plane. |
| J2-45 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J2-46 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J2-47 | BOOT1 Configurable I/O | Configurable I/O | Routes to MCU PB2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J2-48 | BOOT0 Circuit dependent | Circuit dependent | PCB net destination is BOOT0. Check the connected circuit before driving the contact. |
| J2-49 | GND Return | Return | Connects to the board’s ground plane. |
| J2-50 | GND Return | Return | Connects to the board’s ground plane. |
| CN3-1 | VBUS Power | Power | Connects to 5V. Use the specified board power connection. |
| CN3-2 | D- Bidirectional | Bidirectional | USB data line. PCB net destination is PA11. |
| CN3-3 | D+ Bidirectional | Bidirectional | USB data line. PCB net destination is PA12. |
| CN3-4 | ID Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| CN3-5 | GND Return | Return | Connects to the board’s ground plane. |
| CN4-1 | VBUS Power | Power | Connects to 5V. Use the specified board power connection. |
| CN4-2 | D- Bidirectional | Bidirectional | USB data line. PCB net destination is CH340 Pin 6. |
| CN4-3 | D+ Bidirectional | Bidirectional | USB data line. PCB net destination is CH340 Pin 5. |
| CN4-4 | ID Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| CN4-5 | GND Return | Return | Connects to the board’s ground plane. |
| CN1-1 | VCC Power | Power | Connects to 3V3. Use the specified board power connection. |
| CN1-2 | VCC Power | Power | Connects to 3V3. Use the specified board power connection. |
| CN1-3 | TRST Configurable I/O | Configurable I/O | Routes to MCU PB4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| CN1-4 | GND Return | Return | Connects to the board’s ground plane. |
| CN1-5 | TDI Configurable I/O | Configurable I/O | Routes to MCU PA15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| CN1-6 | GND Return | Return | Connects to the board’s ground plane. |
| CN1-7 | TMS / SWDIO Debug | Debug | Connects to MCU PA13 on the debug interface. |
| CN1-8 | GND Return | Return | Connects to the board’s ground plane. |
| CN1-9 | TCLK / SWCLK Debug | Debug | Connects to MCU PA14 on the debug interface. |
| CN1-10 | GND Return | Return | Connects to the board’s ground plane. |
| CN1-11 | RTCK Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| CN1-12 | GND Return | Return | Connects to the board’s ground plane. |
| CN1-13 | TDO / SWO Configurable I/O | Configurable I/O | Routes to MCU PB3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| CN1-14 | GND Return | Return | Connects to the board’s ground plane. |
| CN1-15 | RESET Active-low reset | Active-low reset | Connects to MCU NRST. Use a compatible open-drain reset signal. |
| CN1-16 | GND Return | Return | Connects to the board’s ground plane. |
| CN1-17 | NC Unconnected | Unconnected | The schematic documents no connection at this position. |
| CN1-18 | GND Return | Return | Connects to the board’s ground plane. |
| CN1-19 | 5V Power | Power | Connects to 5V. Use the specified board power connection. |
| CN1-20 | GND Return | Return | Connects to the board’s ground plane. |
| CN2-1 | DAT2 Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| CN2-2 | CD/DAT3 Configurable I/O | Configurable I/O | Routes to MCU PC11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| CN2-3 | CMD Configurable I/O | Configurable I/O | Routes to MCU PD2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| CN2-4 | VDD Power | Power | Connects to 3V3. Use the specified board power connection. |
| CN2-5 | CLK Configurable I/O | Configurable I/O | Routes to MCU PC12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| CN2-6 | VSS Return | Return | Connects to the board’s ground plane. |
| CN2-7 | DAT0 Configurable I/O | Configurable I/O | Routes to MCU PC8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| CN2-8 | DAT1 Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| CN2-9 | CD Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| CN2-10 | Body Return | Return | Connects to the board’s ground plane. |
| J3-1 | GND Return | Return | Connects to the board’s ground plane. |
| J3-2 | PE1 Configurable I/O | Configurable I/O | Routes to MCU PE1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-3 | PD10 Configurable I/O | Configurable I/O | Routes to MCU PD10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-4 | PD9 Configurable I/O | Configurable I/O | Routes to MCU PD9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-5 | PD8 Configurable I/O | Configurable I/O | Routes to MCU PD8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-6 | PE15 Configurable I/O | Configurable I/O | Routes to MCU PE15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-7 | PE14 Configurable I/O | Configurable I/O | Routes to MCU PE14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-8 | PE13 Configurable I/O | Configurable I/O | Routes to MCU PE13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-9 | PE12 Configurable I/O | Configurable I/O | Routes to MCU PE12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-10 | PE11 Configurable I/O | Configurable I/O | Routes to MCU PE11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-11 | PE10 Configurable I/O | Configurable I/O | Routes to MCU PE10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-12 | PE9 Configurable I/O | Configurable I/O | Routes to MCU PE9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-13 | PE8 Configurable I/O | Configurable I/O | Routes to MCU PE8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-14 | PE7 Configurable I/O | Configurable I/O | Routes to MCU PE7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-15 | PD1 Configurable I/O | Configurable I/O | Routes to MCU PD1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-16 | PD0 Configurable I/O | Configurable I/O | Routes to MCU PD0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-17 | PD15 Configurable I/O | Configurable I/O | Routes to MCU PD15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-18 | PD14 Configurable I/O | Configurable I/O | Routes to MCU PD14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-19 | PD4 Configurable I/O | Configurable I/O | Routes to MCU PD4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-20 | PD5 Configurable I/O | Configurable I/O | Routes to MCU PD5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-21 | PD11 Configurable I/O | Configurable I/O | Routes to MCU PD11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-22 | PD7 Configurable I/O | Configurable I/O | Routes to MCU PD7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-23 | PA5 Configurable I/O | Configurable I/O | Routes to MCU PA5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-24 | PB7 Configurable I/O | Configurable I/O | Routes to MCU PB7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-25 | PA7 Configurable I/O | Configurable I/O | Routes to MCU PA7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-26 | PA6 Configurable I/O | Configurable I/O | Routes to MCU PA6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-27 | PB6 Configurable I/O | Configurable I/O | Routes to MCU PB6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-28 | PD13 Configurable I/O | Configurable I/O | Routes to MCU PD13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-29 | 5V Power | Power | Connects to 5V. Use the specified board power connection. |
| J3-30 | PC2 Configurable I/O | Configurable I/O | Routes to MCU PC2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-31 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J3-32 | GND Return | Return | Connects to the board’s ground plane. |
| J8-1 | GND Return | Return | Connects to the board’s ground plane. |
| J8-2 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J8-3 | PE4 Configurable I/O | Configurable I/O | Routes to MCU PE4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J8-4 | PE2 Configurable I/O | Configurable I/O | Routes to MCU PE2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J8-5 | PB3 Configurable I/O | Configurable I/O | Routes to MCU PB3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J8-6 | PB5 Configurable I/O | Configurable I/O | Routes to MCU PB5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J8-7 | PB4 Configurable I/O | Configurable I/O | Routes to MCU PB4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J8-8 | PC13 Configurable I/O | Configurable I/O | Routes to MCU PC13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J9-1 | GND Return | Return | Connects to the board’s ground plane. |
| J9-2 | PB11 Configurable I/O | Configurable I/O | Routes to MCU PB11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J9-3 | PC0 Configurable I/O | Configurable I/O | Routes to MCU PC0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J9-4 | PA0 Configurable I/O | Configurable I/O | Routes to MCU PA0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J9-5 | PC1 Configurable I/O | Configurable I/O | Routes to MCU PC1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J9-6 | PC3 Configurable I/O | Configurable I/O | Routes to MCU PC3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J9-7 | PB10 Configurable I/O | Configurable I/O | Routes to MCU PB10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J9-8 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
Signal assignments
USART1 on PA9/PA10
PA9 is TX and PA10 is RX in the default USART1 mapping. Select the matching firmware configuration.
Electrical limits
| 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. CZ miniSTM32F103VE-EK connector map |
| External high-speed oscillator8 MHz | 8 MHz | Use the correct HSE frequency in firmware clock calculations. CZ miniSTM32F103VE-EK connector map |
Models and documents
The maps follow the listed PCB variants. Match the board markings and connector positions to the referenced schematic before applying power.
- CZ miniSTM32F103VE-EK
- VE-EK uses STM32F103VET6 and J1/J2 expansion headers. The PCB has separate native and USB-to-serial connectors.
- STM32-base · CZ miniSTM32F103VE-EK· Board identification, connector numbering and documented net destinations.
- STMicroelectronics MCU datasheet· MCU electrical specifications and package pin functions.
- CZ miniSTM32F103VE-EK schematic· PCB power, debug, connector and peripheral wiring.