ATSAMD21E15L-AFT

Overview

The ATSAMD21E15L-AFT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, belonging to the SAM D21E series designed for functional safety applications. It features 32KB of in-system programmable Flash memory and 4KB of SRAM. The device operates at a maximum clock frequency of 48MHz with a supply voltage range of 1.62V to 3.63V. It includes ten 12-bit ADC channels and one 10-bit DAC. Connectivity options include I2C, I2S, LINbus, SPI, USART, and USB interfaces. The component is housed in a 32-TQFP package and supports an extended operating temperature range from -40°C to +125°C.

Feature Summary

• Integrated AEC-Q100 qualification for automotive reliability standards
• Functional Safety (FuSa) design compliant with ISO 26262 ASIL B requirements
• Built-in USB 2.0 Full-Speed Device interface
• Internal oscillator with calibration capabilities

Applications

• Automotive body electronics and lighting control
• Industrial motor control systems
• Consumer appliances requiring functional safety compliance
• Battery management systems

Procurement Notes

Verify the specific suffix 'L' indicates lead-free composition and the 'AFT' denotes tape and reel packaging with extended temperature ratings. Confirm that the functional safety documentation aligns with your target ASIL level requirements. Ensure compatibility with the 32-TQFP footprint during PCB layout. Check for any recent product change notices regarding assembly or fabrication sites.

Selection Notes

Select this model when automotive-grade reliability and functional safety certification are mandatory. The 32-TQFP package offers a balance of pin count and thermal performance. Consider alternative SAM D21 variants if higher memory capacity or different interface counts are needed. Verify power consumption specifications against system battery life requirements.

Part Context

This component is part of the Microchip SAM D21E family, which extends the standard SAM D21 line with enhanced functional safety features. It targets markets requiring ISO 26262 compliance, such as automotive and industrial sectors. The E-series designation specifically highlights its suitability for safety-critical applications compared to non-E variants.

Replacement Considerations

ATSAMD21E15B-AUT: Similar specification but in TQFP-32 package with different temperature grade. ATSAMD21E15L-AF: Same electrical specs but in tray packaging instead of tape and reel.