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Seeed Studio XIAO SAMD21

SeeedSeeed Studio XIAO SAMD21

MPN: 102010388
Seeed Technology Co., Ltd
ATSAMD21G18 XIAO SAMD21 SAM D ARM® Cortex®-M0 MCU 32-Bit Embedded Evaluation Board
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Overview

The Seeed Studio XIAO SAMD21 is an ultra-small development board powered by the Microchip SAMD21G18 ARM Cortex-M0+ microcontroller. Despite its thumb-sized footprint, it features a 48MHz clock, 256KB Flash, and 32KB SRAM, making it a powerful solution for compact embedded projects that require USB connectivity.

Why Choose This Part

It offers a high pin-to-size ratio with 14 GPIO pins in a 20mm by 17.5mm area. The board includes a modern USB Type-C interface and supports multiple serial protocols including I2C, SPI, and UART on a single compact module.

Applications

Wearable Devices
The tiny form factor and low power consumption make it ideal for integrated clothing or wrist-mounted electronics.
USB Peripherals
Utilizing the native USB support to create custom HID devices like macro pads or specialized MIDI controllers.
Rapid Prototyping
Breadboard-friendly design for quickly testing sensors and actuators using the Arduino IDE.

Key Specifications

Type MCU 32-Bit
Contents Board(s)
Platform XIAO SAMD21
Mounting Type Fixed
Core Processor ARM Cortex-M0
Utilized IC / Part ATSAMD21G18

Getting Started

Connect the board via USB Type-C and install the Seeed SAMD board package in the Arduino IDE. It is fully compatible with the Arduino ecosystem, CircuitPython, and can be programmed using a standard SWD debugger via the pads on the underside.

Also Consider

Arduino Nano 33 IoT Arduino - Provides a similar SAMD21 core but adds integrated Wi-Fi and Bluetooth connectivity for IoT applications.
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