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// Embedded SBC Connectors

Seeed XIAO Expansion Connector

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.

// Specifications
Standard
Seeed XIAO standard
Pitch
2.54mm
Pin Count
14 (7 per side)
Boards
XIAO SAMD21 ESP32-S3 RP2040 nRF52840
Size
21 x 17.5mm board
Use Case
Ultra-compact wearables IoT embedded
// Pin Reference Table
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