ATSAMD21E16B-MF

Overview

The ATSAMD21E16B-MF is a 32-bit ARM Cortex-M0+ microcontroller from the SAM D21E series, designed for functional safety applications. It features 64 kB of Flash memory and 8 kB of SRAM, operating at a maximum clock frequency of 48 MHz. The device supports a supply voltage range of 1.62 V to 3.63 V and includes 26 I/O pins. It integrates a 12-bit ADC with 10 channels and a 10-bit DAC. The component is qualified under AEC-Q100 standards and operates within a temperature range of -40°C to +125°C.

Feature Summary

• AEC-Q100 qualified for automotive functional safety compliance
• Integrated advanced analog peripherals including 12-bit ADC and 10-bit DAC
• Supports multiple communication interfaces such as SPI, I2C, USART, I2S, and LIN

Applications

• Automotive electronic control units requiring functional safety certification
• Industrial monitoring systems utilizing high-resolution analog signal acquisition
• Embedded controllers in harsh environment applications demanding extended temperature operation

Procurement Notes

Verify the specific suffix 'MF' confirms the QFN-32 package and the +125°C industrial/automotive temperature grade. Confirm AEC-Q100 qualification status matches project requirements. Ensure ESD handling procedures are followed due to moisture sensitivity classification. Cross-reference datasheet revisions for any errata affecting peripheral functionality or pinout definitions before finalizing procurement.

Selection Notes

Select this model when automotive reliability and functional safety are mandatory. The +125°C rating distinguishes it from commercial variants limited to 85°C. The 64 kB Flash and 8 kB RAM balance cost and performance for moderate complexity tasks. Verify interface needs against available pins, as the 32-pin QFN limits total I/O count compared to larger packages.

Part Context

This component belongs to the SAM D21E family, which emphasizes functional safety (FuSa) capabilities. It shares the Cortex-M0+ core architecture with other SAM D21 devices but differs in memory size, package options, and temperature ratings. The 'E' designation typically indicates the automotive-grade variant with enhanced reliability testing and qualification protocols.

Replacement Considerations

ATSAMD21E16B-MUT offers identical electrical specifications with tape-and-reel packaging instead of trays.