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
CZ miniSTM32F103ZE-EK
186 contacts Current packageCZ miniSTM32F103ZE-EK pinout
Header 1 · J3
Header 2 · J4
Main USB connector · CN1
Serial USB connector · CN3
JTAG header · CN2
SD-card connector · J1
TFT Header · J5
nRF24L01 module header · J6
OLED header · J8
J4-30 · D2
Routes to MCU PD2. Choose the applicable GPIO or peripheral function in the MCU documentation.
All 186 pins
| Pin | Signal | Direction | Function |
|---|---|---|---|
| J3-1 | GND Return | Return | Connects to the board’s ground plane. |
| J3-2 | 5V Power | Power | Connects to 5V. Use the specified board power connection. |
| J3-3 | RST Active-low reset | Active-low reset | Connects to MCU NRST. Use a compatible open-drain reset signal. |
| J3-4 | B11 Configurable I/O | Configurable I/O | Routes to MCU PB11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-5 | B10 Configurable I/O | Configurable I/O | Routes to MCU PB10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-6 | G1 Configurable I/O | Configurable I/O | Routes to MCU PG1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-7 | G0 Configurable I/O | Configurable I/O | Routes to MCU PG0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-8 | F15 Configurable I/O | Configurable I/O | Routes to MCU PF15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-9 | F14 Configurable I/O | Configurable I/O | Routes to MCU PF14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-10 | F13 Configurable I/O | Configurable I/O | Routes to MCU PF13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-11 | F12 Configurable I/O | Configurable I/O | Routes to MCU PF12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-12 | F11 Configurable I/O | Configurable I/O | Routes to MCU PF11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-13 | B1 Configurable I/O | Configurable I/O | Routes to MCU PB1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-14 | B0 Configurable I/O | Configurable I/O | Routes to MCU PB0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-15 | C5 Configurable I/O | Configurable I/O | Routes to MCU PC5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-16 | C4 Configurable I/O | Configurable I/O | Routes to MCU PC4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-17 | A4 Configurable I/O | Configurable I/O | Routes to MCU PA4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-18 | A3 Configurable I/O | Configurable I/O | Routes to MCU PA3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-19 | A2 Configurable I/O | Configurable I/O | Routes to MCU PA2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-20 | A1 Configurable I/O | Configurable I/O | Routes to MCU PA1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-21 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J3-22 | A0 Configurable I/O | Configurable I/O | Routes to MCU PA0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-23 | VREF Circuit dependent | Circuit dependent | PCB net destination is VREF+. Check the connected circuit before driving the contact. |
| J3-24 | C3 Configurable I/O | Configurable I/O | Routes to MCU PC3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-25 | C1 Configurable I/O | Configurable I/O | Routes to MCU PC1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-26 | C0 Configurable I/O | Configurable I/O | Routes to MCU PC0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-27 | F10 Configurable I/O | Configurable I/O | Routes to MCU PF10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-28 | F9 Configurable I/O | Configurable I/O | Routes to MCU PF9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-29 | F8 Configurable I/O | Configurable I/O | Routes to MCU PF8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-30 | F7 Configurable I/O | Configurable I/O | Routes to MCU PF7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-31 | F6 Configurable I/O | Configurable I/O | Routes to MCU PF6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-32 | F5 Configurable I/O | Configurable I/O | Routes to MCU PF5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-33 | F4 Configurable I/O | Configurable I/O | Routes to MCU PF4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-34 | F3 Configurable I/O | Configurable I/O | Routes to MCU PF3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-35 | F2 Configurable I/O | Configurable I/O | Routes to MCU PF2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-36 | F1 Configurable I/O | Configurable I/O | Routes to MCU PF1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-37 | F0 Configurable I/O | Configurable I/O | Routes to MCU PF0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-38 | C15 Configurable I/O | Configurable I/O | Routes to MCU PC15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-39 | C14 Configurable I/O | Configurable I/O | Routes to MCU PC14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-40 | C13 Configurable I/O | Configurable I/O | Routes to MCU PC13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-41 | E6 Configurable I/O | Configurable I/O | Routes to MCU PE6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-42 | E5 Configurable I/O | Configurable I/O | Routes to MCU PE5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-43 | E4 Configurable I/O | Configurable I/O | Routes to MCU PE4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-44 | D3 Configurable I/O | Configurable I/O | Routes to MCU PD3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-45 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J3-46 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J3-47 | BOOT1 Configurable I/O | Configurable I/O | Routes to MCU PB2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J3-48 | BOOT0 Circuit dependent | Circuit dependent | PCB net destination is BOOT0. Check the connected circuit before driving the contact. |
| J3-49 | GND Return | Return | Connects to the board’s ground plane. |
| J3-50 | GND Return | Return | Connects to the board’s ground plane. |
| J4-1 | GND Return | Return | Connects to the board’s ground plane. |
| J4-2 | 5V Power | Power | Connects to 5V. Use the specified board power connection. |
| J4-3 | B12 Configurable I/O | Configurable I/O | Routes to MCU PB12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-4 | B13 Configurable I/O | Configurable I/O | Routes to MCU PB13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-5 | B14 Configurable I/O | Configurable I/O | Routes to MCU PB14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-6 | B15 Configurable I/O | Configurable I/O | Routes to MCU PB15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-7 | D12 Configurable I/O | Configurable I/O | Routes to MCU PD12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-8 | G2 Configurable I/O | Configurable I/O | Routes to MCU PG2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-9 | G3 Configurable I/O | Configurable I/O | Routes to MCU PG3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-10 | G4 Configurable I/O | Configurable I/O | Routes to MCU PG4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-11 | G5 Configurable I/O | Configurable I/O | Routes to MCU PG5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-12 | G6 Configurable I/O | Configurable I/O | Routes to MCU PG6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-13 | G7 Configurable I/O | Configurable I/O | Routes to MCU PG7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-14 | G8 Configurable I/O | Configurable I/O | Routes to MCU PG8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-15 | C6 Configurable I/O | Configurable I/O | Routes to MCU PC6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-16 | C7 Configurable I/O | Configurable I/O | Routes to MCU PC7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-17 | C8 Configurable I/O | Configurable I/O | Routes to MCU PC8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-18 | C9 Configurable I/O | Configurable I/O | Routes to MCU PC9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-19 | A8 Configurable I/O | Configurable I/O | Routes to MCU PA8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-20 | A9 Configurable I/O | Configurable I/O | Routes to MCU PA9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-21 | A10 Configurable I/O | Configurable I/O | Routes to MCU PA10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-22 | A11 Configurable I/O | Configurable I/O | Routes to MCU PA11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-23 | A12 Configurable I/O | Configurable I/O | Routes to MCU PA12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-24 | A13 Configurable I/O | Configurable I/O | Routes to MCU PA13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-25 | A14 Configurable I/O | Configurable I/O | Routes to MCU PA14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-26 | A15 Configurable I/O | Configurable I/O | Routes to MCU PA15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-27 | C10 Configurable I/O | Configurable I/O | Routes to MCU PC10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-28 | C11 Configurable I/O | Configurable I/O | Routes to MCU PC11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-29 | C12 Configurable I/O | Configurable I/O | Routes to MCU PC12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-30 | D2 Configurable I/O | Configurable I/O | Routes to MCU PD2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-31 | D3 Configurable I/O | Configurable I/O | Routes to MCU PD3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-32 | D6 Configurable I/O | Configurable I/O | Routes to MCU PD6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-33 | G9 Configurable I/O | Configurable I/O | Routes to MCU PG9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-34 | G10 Configurable I/O | Configurable I/O | Routes to MCU PG10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-35 | G11 Configurable I/O | Configurable I/O | Routes to MCU PG11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-36 | G12 Configurable I/O | Configurable I/O | Routes to MCU PG12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-37 | G13 Configurable I/O | Configurable I/O | Routes to MCU PG13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-38 | G14 Configurable I/O | Configurable I/O | Routes to MCU PG14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-39 | G15 Configurable I/O | Configurable I/O | Routes to MCU PG15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-40 | B3 Configurable I/O | Configurable I/O | Routes to MCU PB3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-41 | B4 Configurable I/O | Configurable I/O | Routes to MCU PB4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-42 | B5 Configurable I/O | Configurable I/O | Routes to MCU PB5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-43 | B8 Configurable I/O | Configurable I/O | Routes to MCU PB8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-44 | B9 Configurable I/O | Configurable I/O | Routes to MCU PB9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-45 | E0 Configurable I/O | Configurable I/O | Routes to MCU PE0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-46 | E2 Configurable I/O | Configurable I/O | Routes to MCU PE2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J4-47 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J4-48 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J4-49 | GND Return | Return | Connects to the board’s ground plane. |
| J4-50 | GND Return | Return | Connects to the board’s ground plane. |
| CN1-1 | VBUS Power | Power | Connects to 5V. Use the specified board power connection. |
| CN1-2 | D- Bidirectional | Bidirectional | USB data line. PCB net destination is PA11. |
| CN1-3 | D+ Bidirectional | Bidirectional | USB data line. PCB net destination is PA12. |
| CN1-4 | ID Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| CN1-5 | 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- Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| CN3-3 | D+ Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| 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. |
| CN2-1 | VCC Power | Power | Connects to 3V3. Use the specified board power connection. |
| CN2-2 | VCC Power | Power | Connects to 3V3. Use the specified board power connection. |
| CN2-3 | TRST Configurable I/O | Configurable I/O | Routes to MCU PB4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| CN2-4 | GND Return | Return | Connects to the board’s ground plane. |
| CN2-5 | TDI Configurable I/O | Configurable I/O | Routes to MCU PA15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| CN2-6 | GND Return | Return | Connects to the board’s ground plane. |
| CN2-7 | TMS / SWDIO Debug | Debug | Connects to MCU PA13 on the debug interface. |
| CN2-8 | GND Return | Return | Connects to the board’s ground plane. |
| CN2-9 | TCLK / SWCLK Debug | Debug | Connects to MCU PA14 on the debug interface. |
| CN2-10 | GND Return | Return | Connects to the board’s ground plane. |
| CN2-11 | RTCK Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| CN2-12 | GND Return | Return | Connects to the board’s ground plane. |
| CN2-13 | TDO / SWO Configurable I/O | Configurable I/O | Routes to MCU PB3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| CN2-14 | GND Return | Return | Connects to the board’s ground plane. |
| CN2-15 | RESET Active-low reset | Active-low reset | Connects to MCU NRST. Use a compatible open-drain reset signal. |
| CN2-16 | GND Return | Return | Connects to the board’s ground plane. |
| CN2-17 | NC Unconnected | Unconnected | The schematic documents no connection at this position. |
| CN2-18 | GND Return | Return | Connects to the board’s ground plane. |
| CN2-19 | 5V Power | Power | Connects to 5V. Use the specified board power connection. |
| CN2-20 | GND Return | Return | Connects to the board’s ground plane. |
| J1-1 | DAT2 Circuit dependent | Circuit dependent | PCB net destination is PC10, pulled up via 10kΩ resistor. Check the connected circuit before driving the contact. |
| J1-2 | CD/DAT3 Circuit dependent | Circuit dependent | PCB net destination is PC11, pulled up via 10kΩ resistor. Check the connected circuit before driving the contact. |
| J1-3 | CMD Circuit dependent | Circuit dependent | PCB net destination is PD2, pulled up via 10kΩ resistor. Check the connected circuit before driving the contact. |
| J1-4 | VDD Power | Power | Connects to 3V3. Use the specified board power connection. |
| J1-5 | CLK Configurable I/O | Configurable I/O | Routes to MCU PC12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J1-6 | VSS Return | Return | Connects to the board’s ground plane. |
| J1-7 | DAT0 Circuit dependent | Circuit dependent | PCB net destination is PC8, pulled up via 10kΩ resistor. Check the connected circuit before driving the contact. |
| J1-8 | DAT1 Circuit dependent | Circuit dependent | PCB net destination is PC9, pulled up via 10kΩ resistor. Check the connected circuit before driving the contact. |
| J1-9 | CD Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| J1-10 | Body Return | Return | Connects to the board’s ground plane. |
| J5-1 | GND Return | Return | Connects to the board’s ground plane. |
| J5-2 | E1 Configurable I/O | Configurable I/O | Routes to MCU PE1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-3 | D10 Configurable I/O | Configurable I/O | Routes to MCU PD10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-4 | D9 Configurable I/O | Configurable I/O | Routes to MCU PD9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-5 | D8 Configurable I/O | Configurable I/O | Routes to MCU PD8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-6 | E15 Configurable I/O | Configurable I/O | Routes to MCU PE15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-7 | E14 Configurable I/O | Configurable I/O | Routes to MCU PE14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-8 | E13 Configurable I/O | Configurable I/O | Routes to MCU PE13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-9 | E12 Configurable I/O | Configurable I/O | Routes to MCU PE12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-10 | E11 Configurable I/O | Configurable I/O | Routes to MCU PE11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-11 | E10 Configurable I/O | Configurable I/O | Routes to MCU PE10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-12 | E9 Configurable I/O | Configurable I/O | Routes to MCU PE9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-13 | E8 Configurable I/O | Configurable I/O | Routes to MCU PE8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-14 | E7 Configurable I/O | Configurable I/O | Routes to MCU PE7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-15 | D1 Configurable I/O | Configurable I/O | Routes to MCU PD1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-16 | D0 Configurable I/O | Configurable I/O | Routes to MCU PD0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-17 | D15 Configurable I/O | Configurable I/O | Routes to MCU PD15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-18 | D14 Configurable I/O | Configurable I/O | Routes to MCU PD14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-19 | D4 Configurable I/O | Configurable I/O | Routes to MCU PD4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-20 | D5 Configurable I/O | Configurable I/O | Routes to MCU PD5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-21 | D11 Configurable I/O | Configurable I/O | Routes to MCU PD11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-22 | D7 Configurable I/O | Configurable I/O | Routes to MCU PD7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-23 | A5 Configurable I/O | Configurable I/O | Routes to MCU PA5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-24 | B7 Configurable I/O | Configurable I/O | Routes to MCU PB7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-25 | A7 Configurable I/O | Configurable I/O | Routes to MCU PA7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-26 | A6 Configurable I/O | Configurable I/O | Routes to MCU PA6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-27 | B6 Configurable I/O | Configurable I/O | Routes to MCU PB6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-28 | D13 Configurable I/O | Configurable I/O | Routes to MCU PD13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-29 | 5V Power | Power | Connects to 5V. Use the specified board power connection. |
| J5-30 | C2 Configurable I/O | Configurable I/O | Routes to MCU PC2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J5-31 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J5-32 | GND Return | Return | Connects to the board’s ground plane. |
| J6-1 | GND Return | Return | Connects to the board’s ground plane. |
| J6-2 | 3V3 Power | Power | Connects to 3V3. Use the specified board power connection. |
| J6-3 | G15 Configurable I/O | Configurable I/O | Routes to MCU PG15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J6-4 | B9 Configurable I/O | Configurable I/O | Routes to MCU PB9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J6-5 | B13 Configurable I/O | Configurable I/O | Routes to MCU PB13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J6-6 | B15 Configurable I/O | Configurable I/O | Routes to MCU PB15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J6-7 | B14 Configurable I/O | Configurable I/O | Routes to MCU PB14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J6-8 | B8 Configurable I/O | Configurable I/O | Routes to MCU PB8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| 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 | E3 Configurable I/O | Configurable I/O | Routes to MCU PE3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J8-4 | E4 Configurable I/O | Configurable I/O | Routes to MCU PE4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J8-5 | E5 Configurable I/O | Configurable I/O | Routes to MCU PE5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| J8-6 | E6 Configurable I/O | Configurable I/O | Routes to MCU PE6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
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 miniSTM32F103ZE-EK connector map |
| External high-speed oscillator8 MHz | 8 MHz | Use the correct HSE frequency in firmware clock calculations. CZ miniSTM32F103ZE-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 miniSTM32F103ZE-EK
- ZE-EK uses STM32F103ZET6 and two 50-contact J3/J4 expansion headers. Use the native USB connector CN1 when following the power scenario.
- STM32-base · CZ miniSTM32F103ZE-EK· Board identification, connector numbering and documented net destinations.
- STMicroelectronics MCU datasheet· MCU electrical specifications and package pin functions.
- CZ miniSTM32F103ZE-EK schematic· PCB power, debug, connector and peripheral wiring.