MCHPATSAMD21E15B-MFT
Overview
The ATSAMD21E15B-MFT is a low-power, high-performance 32-bit ARM Cortex-M0+ based microcontroller from Microchip. It features 32KB of Flash and 4KB of SRAM, operating at a maximum frequency of 48MHz in a compact 32-pin QFN package. This device is designed for simple migration within the SAM D21 family and includes a rich peripheral set such as the Serial Communication Interface (SERCOM).
Why Choose This Part
This MCU offers excellent power efficiency with the ARM Cortex-M0+ core and includes the versatile SERCOM peripheral, which can be configured as I2C, SPI, or USART. The extended temperature rating up to 125C makes it suitable for demanding thermal environments where standard consumer-grade MCUs might fail.
Applications
Getting Started
Engineers can begin development using the Microchip SAM D21 Curiosity Nano evaluation kit or the SAM D21 Xplained Pro board. The device is fully supported by the Microchip Studio IDE and the MPLAB X ecosystem, including the Harmony v3 software framework for rapid driver generation.
Dev Boards
Development boards and breakout modules featuring the ATSAMD21E15B-MFT 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 |
|---|---|---|---|---|---|
| ATSAMD21E15B-MFT (this part) | — | — | — | — | 4,402 |
| 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 |



