ATSAMD21E15L-MNT

Overview

The ATSAMD21E15L-MNT is an ARM Cortex-M0+ microcontroller from the SAM D21E series, designed for functional safety applications. It features a 48 MHz maximum clock frequency and includes 32 kB of Flash program memory alongside 4 kB of SRAM data RAM. The device operates within a supply voltage range of 1.62 V to 3.63 V and supports an extended industrial temperature range from -40°C to +105°C. It provides 26 general-purpose I/O pins and integrates multiple communication interfaces including I2C, SPI, USART, LIN, and I2S. Analog capabilities include a 12-bit ADC with 14 channels and a 10-bit DAC.

Feature Summary

• AEC-Q100 qualified for automotive-grade reliability
• Integrated advanced analog peripherals including high-resolution ADC and DAC
• Supports multiple serial communication protocols via SERCOM modules
• Operates efficiently across wide voltage and temperature ranges

Applications

• Automotive electronic control units requiring functional safety compliance
• Industrial sensor nodes operating in harsh thermal environments
• Battery-powered devices utilizing low-voltage operation modes
• Communication gateways supporting LIN and serial bus standards

Procurement Notes

Verify the specific suffix L-MNT against official Microchip documentation to confirm the QFN-32 package and extended temperature rating. Ensure compatibility with AEC-Q100 requirements if used in automotive contexts. Confirm moisture sensitivity levels and reflow soldering profiles prior to assembly. Cross-reference datasheet revisions to validate pinout and electrical characteristics for final design integration.

Selection Notes

Select this component when automotive qualification and extended temperature performance are mandatory. The 32 kB memory size suits moderate complexity firmware tasks. Compare against other SAM D21E variants if higher I/O counts or different package styles are required. Verify that the 14-channel ADC configuration meets system signal acquisition needs without external multiplexing.

Part Context

This part belongs to the SAM D21E family, which focuses on functional safety (FuSa) compliant microcontrollers. Unlike standard consumer variants, the E-series emphasizes reliability and diagnostic coverage suitable for safety-critical systems. The L-MNT designation indicates the specific package type and temperature grade within this specialized automotive-oriented product line.

Replacement Considerations

ATSAMD21E15B-MUT offers identical core specifications but utilizes a QFN-32 package with an 85°C temperature limit instead of the 105°C rating found in the L-MNT variant.