MCHPATSAMD21 Xplained Pro
Overview
The ATSAMD21-XPRO is a Microchip Xplained Pro evaluation board built around the ATSAMD21J18A, a 32-bit ARM Cortex-M0+ microcontroller from the SAM D21 family. It is meant for development, bring-up, and learning rather than end-product use, giving engineers an easy way to evaluate the MCU and its peripherals on a ready-made board. The Xplained Pro ecosystem also makes it straightforward to add plug-in extension boards for sensors, interfaces, and other application-specific tests.
Why Choose This Part
This board gives you a known-good reference design around the ATSAMD21J18A, which can reduce setup time and hardware uncertainty during development. As an Xplained Pro board, it is intended to work with Microchip's ecosystem of extension boards and tooling, making it easier to exercise MCU features without building a custom platform first. It is especially useful when you want a small, modern ARM Cortex-M0+ target for firmware development, peripheral testing, and low-power experimentation.
Applications
Key Specifications
Getting Started
Use Microchip's development environment and board support packages for the SAM D21 family, then connect the board through its on-board debug interface. The Xplained Pro ecosystem is designed to work with Microchip Studio and compatible toolchains, and it is a good idea to start from board examples before moving to custom peripherals. If you plan to expand beyond the onboard resources, check the Xplained Pro extension headers and make sure your firmware pinout matches the board schematic.
Dev Boards
Development boards and breakout modules featuring the ATSAMD21-XPRO or compatible chips — ready to use for prototyping.
