Seeed XIAO is an ultra-compact MCU board series with a 14-pin expansion interface providing digital, analog, SPI, I2C, UART, and GPIO on a board smaller than a thumb.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | D0 | Digital I/O ADC | ADC |
| 2 | D1 | Digital I/O ADC | ADC |
| 3 | D2 | Digital I/O ADC | ADC |
| 4 | D3 | Digital PWM | I/O |
| 5 | D4 | Digital I2C SDA | BUS |
| 6 | D5 | Digital I2C SCL | BUS |
| 7 | D6 | Digital UART TX | BUS |
| 8 | D7 | Digital UART RX | BUS |
| 9 | D8 | Digital SPI SCK | BUS |
| 10 | D9 | Digital SPI MISO | BUS |
| 11 | D10 | Digital SPI MOSI | BUS |
| 12 | 3V3 | 3.3V power | PWR |
| 13 | GND | Ground | GND |
| 14 | 5V | 5V power | PWR |
Seeed XIAO is an ultra-compact MCU board series with a 14-pin expansion interface providing digital, analog, SPI, I2C, UART, and GPIO on a board smaller than a thumb.