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Seeed Studio XIAO SAMD21 ā ARM Cortex-M0+ Mini Development Board
š Product Overview
The Seeed Studio XIAO SAMD21 is an ultra-compact and powerful
ARM Cortex-M0+ development board designed for embedded systems,
IoT, wearables, and low-power applications. Powered by the SAMD21G18
microcontroller, this board delivers excellent performance while maintaining very
low power consumption.
Featuring a USB Type-C interface, native USB support, and
Arduino compatibility, the XIAO SAMD21 enables rapid prototyping
and easy firmware development in a remarkably small form factor.
ā” Quick Specifications
- š§ ARM Cortex-M0+ 32-bit MCU (SAMD21)
- ā” Up to 48MHz operating frequency
- š¾ 256KB Flash, 32KB SRAM
- š USB Type-C with native USB support
- š¦ Ultra-small form factor (21 Ć 17.5 mm)
ā Key Advantages
ā Extremely compact size for space-constrained designs
ā Low-power ARM Cortex-M0+ architecture
ā Native USB for direct PC communication
ā Arduino IDE and MicroPython support
ā Ideal for rapid prototyping and production use
š Technical Specifications
| Microcontroller | SAMD21G18, ARM Cortex-M0+ |
| Clock Speed | Up to 48 MHz |
| Flash Memory | 256 KB |
| SRAM | 32 KB |
| Operating Voltage | 3.3 V |
| USB Interface | USB Type-C (native USB) |
| GPIO / Peripherals | ADC, DAC, SERCOM, PWM, IĀ²C, SPI, UART |
| Board Dimensions | 21 mm Ć 17.5 mm |
š§© Typical Applications
š” IoT and connected devices
ā Wearables and compact gadgets
š¤ Robotics and automation
š Embedded control systems
š Education and rapid prototyping
š” Design Tips
- Use low-power sleep modes to maximize battery life in portable designs.
- Leverage SERCOM flexibility to map UART, SPI, and IĀ²C as required.
- Ensure proper USB Type-C power source for stable operation.
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