MCHPATSAMD21G18A-MZVAO

Overview

The ATSAMD21G18A-MZVAO is a Microchip ARM Cortex-M0+ microcontroller from the SAM D21 family. It combines a 32-bit core with integrated peripherals and a 48 MHz maximum CPU clock, packaged in a 48-pin QFN for compact embedded designs. This -MZVAO ordering code is a tray-packaged device intended for production use.

Why Choose This Part

The SAMD21 family is popular because it gives engineers a 32-bit ARM core in a small, cost-effective MCU with a broad ecosystem. The 48-pin QFN package helps keep board area down while still leaving room for useful peripherals and I/O. It is a practical choice when you want more capability than an 8-bit MCU without moving to a much larger or more complex device.

Applications

Getting Started

A common starting point is an Arduino-compatible SAMD21 board such as the Arduino Zero or Adafruit Feather M0 family, which helps with bring-up and software examples. You can program SAMD21 devices with the Arduino IDE or with Microchip's MPLAB X and GCC-based toolchains, depending on your workflow. For custom hardware, make sure your design includes the correct power, clock, reset, and programming/debug access for the chosen package.

Dev Boards

Development boards and breakout modules featuring the ATSAMD21G18A-MZVAO or compatible chips — ready to use for prototyping.

Seeed Studio XIAO SAMD21 Seeed Technology Co., Ltd

ATSAMD21G18 XIAO SAMD21 SAM D ARM® Cortex®-M0 MCU 32-Bit Embedded Evaluation Board

Digi-Key 509 in stock

Seeed Studio XIAO SAMD21 Seeed Technology Co., Ltd

ATSAMD21G18 XIAO SAMD21 SAM D ARM® Cortex®-M0+ MCU 32-Bit Embedded Evaluation Board

Digi-Key 3,141 in stock

Adafruit Feather M0 Express Adafruit Industries LLC

ATSAMD21G18 Feather M0 Express SAM D ARM® Cortex®-M0+ MCU 32-Bit Embedded Evaluation Board

Digi-Key Mouser 364 in stock

Arduino Nano 33 IoT Arduino

The Arduino Nano 33 IoT with Headers (ABX00032) is a compact and versatile development board featuring the ARM® Cortex®-

Digi-Key Mouser 355 in stock

Arduino Nano 33 IoT Arduino

The Arduino Nano 33 IoT (ABX00027) is an advanced evaluation platform designed for IoT applications, featuring the 32 bi

Digi-Key Mouser 657 in stock

SAMD21G Family

Comparing specs that differ across variants. The current part is highlighted.

Also Consider

ATSAMD21G18A-AU MCHPMicrochip Technology - Same SAMD21G18A family in a different package, useful if you want the same core device but a more common package option for prototyping.

ATSAMD21E18A-AU MCHPMicrochip Technology - A closely related SAMD21 option for designs that can use a smaller pin count or lower I/O count while staying in the same ecosystem.

ATSAMD51J19A-AU MCHPMicrochip Technology - A higher-performance Microchip Cortex-M4F alternative if your design needs more CPU headroom and can accept a more capable MCU family.

STM32G030F6P6 STMicroelectronics - A low-cost ARM MCU alternative for simple control applications where a different vendor ecosystem is acceptable.

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