| GPIO Name | Peripheral | Alternate |
|---|---|---|
| PA 03 | - | |
| PA 04 | Accelerometer X | ADC_1 |
| PA 05 | Accelerometer Y | ADC_2 |
| PA 06 | Accelerometer Z | ADC_3 |
| PA 07 | LEDs | - |
| PA 08 | LEDs | - |
| PA 09 | TWI interface | SCL |
| PA 10 | TWI interface | SDA |
| PA 11 | 3x Clocks | Xin_32 |
| PA 12 | 3x Clocks | Xout_32 |
| PA 13 | Joystick | EXTINT_8 |
| PA 14 | SPI Interface | MOSI |
| PA 15 | SPI Interface | SCK |
| PA 16 | SPI Interface | CS0 |
| PA 17 | SPI Interface | CS1 |
| PA 18 | 3x Clocks | Xin_0 |
| PA 19 | 3x Clocks | Xout_0 |
| PA 20 | USB | - |
| PA 21 | LEDs | - |
| PA 22 | LEDs- Audio lines | PWM_6 |
| PA 23 | USART interface | TXD |
| PA 24 | USART interface | RXD |
| PA 25 | SPI Interface | MISO |
| PA 26 | USB | USB_ID |
| PA 27 | USB | USB_VBOF |
| PA 28 | 3x Clocks- Audio lines | Xin1/PWM_4 |
| PA 29 | 3x Clocks | Xout1 |
| PA 30 | Light Sensor | ADC_6 |
| PA 31 | Temperature Sensor | ADC_7 |