ATSAMD21E17A-MF

Overview

The ATSAMD21E17A-MF is a 32-bit microcontroller based on the ARM Cortex-M0+ core, belonging to the SAM D21 family. It features 128KB of in-system self-programmable flash memory and 16KB of data SRAM. The device operates at a maximum clock frequency of 48MHz with a supply voltage range of 1.62V to 3.63V. It includes an internal oscillator, 26 general-purpose I/O lines, and supports interfaces such as SPI, USART, I2C, I2S, and USB. The component is housed in a 32-lead QFN package and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Functional Safety (FuSa) qualification compliant with ISO 26262 ASIL B requirements
• Integrated analog peripherals including a 12-bit ADC and 10-bit DAC
• Supports multiple communication protocols via dedicated hardware controllers
• Includes DMA controller for efficient data transfer management

Applications

• Automotive body electronics and lighting control systems
• Industrial motor control and automation devices
• Portable medical instrumentation requiring low power consumption
• Consumer appliances with functional safety constraints

Procurement Notes

Verify the specific suffix 'MF' against the official Microchip datasheet to confirm the package type and temperature grade. Confirm current production status as product lifecycle changes may affect availability. Ensure compliance with RoHS and REACH directives for your target market. Cross-reference the AEC-Q100 qualification level if used in automotive designs.

Selection Notes

Select this model when ISO 26262 ASIL B compliance is required within the SAM D21 ecosystem. It offers higher memory capacity than the E15 variant while maintaining the compact QFN footprint. Consider the 48MHz performance limit and available I/O count relative to system interface requirements. Evaluate the need for automotive qualification versus standard industrial grades.

Part Context

This component is part of the SAM D21 series, designed for cost-sensitive and space-constrained applications. The series integrates high-performance analog peripherals with the Cortex-M0+ processor. The E17 variant specifically targets markets requiring functional safety certifications, distinguishing it from standard commercial variants in the same family.

FAQ

What is the functional safety rating of the ATSAMD21E17A-MF?

The device is qualified according to ISO 26262 for Automotive Safety Integrity Level (ASIL) B.

Does this microcontroller support USB connectivity?

Yes, the ATSAMD21E17A-MF includes a USB 2.0 Full-Speed Device interface.