Serial Wire Debug
PA13 is SWDIO and PA14 is SWCLK. The 3.3 V board rail is a reference for a compatible probe.
Baite Maple Mini pinout
This map follows the BTE14-07A PCB. The numbered silkscreen follows the Maple Mini convention. Identify the fitted MCU before selecting the memory layout.
Baite BTE14-07A
45 contacts Current packageBaite BTE14-07A pinout
Header 1
Header 2
USB connector
H3-3 · D+
USB data line. PCB net destination is PA12.
All 45 pins
| Pin | Signal | Direction | Function |
|---|---|---|---|
| H1-1 | Vcc Power | Power | Connects to 3V3. Use the specified board power connection. |
| H1-2 | GND Return | Return | Connects to the board’s ground plane. |
| H1-3 | Vbat Power | Power | Connects to VBAT. Use the specified board power connection. |
| H1-4 | 14 Configurable I/O | Configurable I/O | Routes to MCU PC13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-5 | 13 Configurable I/O | Configurable I/O | Routes to MCU PC14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-6 | 12 Configurable I/O | Configurable I/O | Routes to MCU PC15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-7 | reset Active-low reset | Active-low reset | Connects to MCU NRST. Use a compatible open-drain reset signal. |
| H1-8 | 11 Configurable I/O | Configurable I/O | Routes to MCU PA0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-9 | 10 Configurable I/O | Configurable I/O | Routes to MCU PA1. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-10 | 9 Configurable I/O | Configurable I/O | Routes to MCU PA2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-11 | 8 Configurable I/O | Configurable I/O | Routes to MCU PA3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-12 | 7 Configurable I/O | Configurable I/O | Routes to MCU PA4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-13 | 6 Configurable I/O | Configurable I/O | Routes to MCU PA5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-14 | 5 Configurable I/O | Configurable I/O | Routes to MCU PA6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-15 | 4 Configurable I/O | Configurable I/O | Routes to MCU PA7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-16 | 3 Configurable I/O | Configurable I/O | Routes to MCU PB0. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-17 | 2 Configurable I/O | Configurable I/O | Routes to MCU PB2. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-18 | 1 Configurable I/O | Configurable I/O | Routes to MCU PB10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-19 | 0 Configurable I/O | Configurable I/O | Routes to MCU PB11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H1-20 | vin Power | Power | Connects to VIN. Use the specified board power connection. |
| H2-1 | Vcc Power | Power | Connects to 3V3. Use the specified board power connection. |
| H2-2 | GND Return | Return | Connects to the board’s ground plane. |
| H2-3 | but Configurable I/O | Configurable I/O | Routes to MCU PB8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-4 | 15 Configurable I/O | Configurable I/O | Routes to MCU PB7. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-5 | 16 Configurable I/O | Configurable I/O | Routes to MCU PB6. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-6 | 17 Configurable I/O | Configurable I/O | Routes to MCU PB5. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-7 | 18 Configurable I/O | Configurable I/O | Routes to MCU PB4. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-8 | 19 Configurable I/O | Configurable I/O | Routes to MCU PB3. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-9 | 20 Configurable I/O | Configurable I/O | Routes to MCU PA15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-10 | 21 Configurable I/O | Configurable I/O | Routes to MCU PA14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-11 | 22 Configurable I/O | Configurable I/O | Routes to MCU PA13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-12 | 23 Configurable I/O | Configurable I/O | Routes to MCU PA12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-13 | 24 Configurable I/O | Configurable I/O | Routes to MCU PA11. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-14 | 25 Configurable I/O | Configurable I/O | Routes to MCU PA10. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-15 | 26 Configurable I/O | Configurable I/O | Routes to MCU PA9. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-16 | 27 Configurable I/O | Configurable I/O | Routes to MCU PA8. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-17 | 28 Configurable I/O | Configurable I/O | Routes to MCU PB15. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-18 | 29 Configurable I/O | Configurable I/O | Routes to MCU PB14. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-19 | 30 Configurable I/O | Configurable I/O | Routes to MCU PB13. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H2-20 | 31 Configurable I/O | Configurable I/O | Routes to MCU PB12. Choose the applicable GPIO or peripheral function in the MCU documentation. |
| H3-1 | VCC Power | Power | Connects to VIN. Use the specified board power connection. |
| H3-2 | D- Bidirectional | Bidirectional | USB data line. PCB net destination is PA11. |
| H3-3 | D+ Bidirectional | Bidirectional | USB data line. PCB net destination is PA12. |
| H3-4 | ID Unconfirmed | Unconfirmed | The board source supplies no net for this position. Consult the schematic before use. |
| H3-5 | GND Return | Return | Connects to the board’s ground plane. |
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. Baite BTE14-07A connector map |
| External high-speed oscillator8 MHz | 8 MHz | Use the correct HSE frequency in firmware clock calculations. Baite BTE14-07A 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.
- Baite BTE14-07A
- This map follows the BTE14-07A PCB. The numbered silkscreen follows the Maple Mini convention. Identify the fitted MCU before selecting the memory layout.
- STM32-base · Baite BTE14-07A· Board identification, connector numbering and documented net destinations.
- STMicroelectronics MCU datasheet· MCU electrical specifications and package pin functions.
- LeafLabs Maple Mini reference· Original Maple Mini GPIO names and bootloader behavior. Check Baite-specific power and part markings separately.