Seeed Studio XIAO Series are diminutive development boards, sharing a similar hardware structure, where the size is literally thumb-sized. The code name "XIAO" here represents its half feature "Tiny", and the other half will be "Puissant".
XIAO SAMD21 with a pre-soldered header, powered by a SAMD21G18 chip is an ultra-small, high-performance universal development board, the pioneering product of the XIAO series. It supports Arduino / Micropython / CircuitPython development, which is the perfect microcontroller for you to get started with electronics.
Highlighted Features
- High Performance: Powered by SAMD21G18 chip, operating up to 48MHz, equipped with 32KB of SRAM, and 256KB of onboard flash memory
- Ultra-small Design: 21 x 17.5mm, Seeed Studio XIAO series classic form factor, suitable for wearable devices
- Multiple Development Interfaces: 11x analog / 11x digital Pins, 1x I2C interface, 1x UART port, and 1 SPI port
- Multiple Develop Platform: Support Arduino / Micropython / CircuitPython development, friendly for beginners, satisfied for electronics enthusiasts
- Perfect for Production: Breadboard-friendly & SMD design, no components on the back
Applications
- Wearable devices
- Rapid prototyping (directly attached to the expanded PCB as a minimal system)
- Perfect for all the projects that need a mini Arduino
- DIY keyboard
- USB development (USB to multi-channel TTL/USB host mode, etc.)
- In a scenario where you need to read multiple mock values The DAC output
Specifications
| Parameter | Description |
| CPU | ARM Cortex-M0+ CPU(SAMD21G18) running at up to 48MHz |
| Storage | 256KB Flash,32KB SRAM |
| I/O PINs | 14 GPIO PINs,11 analog PINs, 11 digital PINs, 1 DAC output Pin |
| Interface | 1 I2C interface,1 UART interface, 1 SPI interface, USB Type-C interface |
| LEDs | 1 user LED, 1 power LED, and two LEDs for serial port downloading |
| Reset button | two reset buttons short-connect to reset |
| Software compatibility | Arduino IDE |
| Dimensions | 21x17.5 mm |
Hardware Overview
Figure: Device Schematics