MCHPATSAMD21E18A-MZVAO
Overview
The ATSAMD21E18A-MZVAO is an automotive-qualified 32-bit ARM Cortex-M0+ microcontroller designed for high-temperature environments up to 125 degrees Celsius. This variant features 256KB of Flash memory and is housed in a compact 32-pin QFN package, operating at speeds up to 48MHz.
Why Choose This Part
This AEC-Q100 qualified MCU offers a high-temperature rating of 125C, making it suitable for under-the-hood or heavy industrial applications. It provides a generous 256KB Flash in a small 5x5mm QFN footprint, balancing high memory capacity with space constraints.
Applications
Getting Started
Development is supported by the Microchip Atmel-ICE programmer and the MPLAB X or Microchip Studio IDEs. Engineers can leverage the Atmel Software Framework (ASF) and Harmony for rapid driver implementation and automotive middleware integration.
Dev Boards
Development boards and breakout modules featuring the ATSAMD21E18A-MZVAO or compatible chips — ready to use for prototyping.
SAMD21E Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | RAM | Package | Flash | Temp Range | Stock |
|---|---|---|---|---|---|
| ATSAMD21E18A-MZVAO (this part) | — | — | — | — | 445 |
| ATSAMD21E18A-MUT | 32K | VFQFN-32 | 256KB | -40degC ~ 85degC (.. | 24,578 |
| ATSAMD21E18A-AUT | 32K | TQFP-32 | 256KB | -40degC ~ 85degC (.. | 11,120 |
| ATSAMD21E18A-AFT | 32K | TQFP-32 | 256KB | -40degC ~ 125degC .. | 11,484 |
| ATSAMD21E15B-AFT | 4K | TQFP-32 | 32KB | -40degC ~ 125degC .. | 2,970 |
| ATSAMD21E18A-AU (Microchip) | 32K | TQFP-32 | 256KB | -40degC ~ 85degC (.. | 1,742 |
| ATSAMD21E17A-AUT | 16K | TQFP-32 | 128KB | -40degC ~ 85degC (.. | 2,730 |



