ATSAMD21E16L-MFT

Overview

The ATSAMD21E16L-MFT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, operating at a maximum frequency of 48 MHz. It features 64 KB of flash memory and 8 KB of SRAM. The device supports a supply voltage range of 1.62 V to 3.6 V and operates within a temperature range of -40°C to +125°C. It includes 10-channel 12-bit ADCs and one 10-bit DAC. Connectivity options include I2C, LINbus, SPI, and USART interfaces. The component is AEC-Q100 qualified for automotive applications and is housed in a 32-VQFN package.

Feature Summary

• Automotive-grade functional safety qualification compliant with AEC-Q100 standards
• Integrated advanced analog peripherals including multi-channel high-resolution ADCs and a digital-to-analog converter
• Supports low-power operation suitable for energy-constrained embedded systems
• Includes hardware security features and debug interface support

Applications

• Automotive body control modules requiring functional safety compliance
• Industrial sensor nodes utilizing analog signal processing
• Consumer electronics with strict power management requirements
• Embedded control systems using LINbus communication protocols

Procurement Notes

Verify the specific suffix 'MFT' against the manufacturer's official datasheet to confirm the tape-and-reel packaging configuration and temperature grade. Ensure the order matches the exact part number to avoid discrepancies in pinout or electrical characteristics compared to other variants in the SAM D21E family. Cross-reference the revision level with the latest documentation.

Selection Notes

Select this variant when automotive reliability and functional safety certification are mandatory. The 32-VQFN package suits space-constrained designs. Compare pin counts and peripheral availability against the ATSAMD21G series if additional I/O or different memory sizes are required. Confirm that the 48 MHz clock speed meets the real-time processing demands of the target application.

Part Context

This component belongs to the Microchip SAM D21E series, which is designed specifically for automotive applications meeting ISO 26262 guidelines. It shares the Cortex-M0+ architecture with the broader SAM D21 family but distinguishes itself through enhanced reliability testing and functional safety documentation. The E-series designation indicates automotive qualification, while the G-series typically denotes general-purpose industrial use.

Replacement Considerations

Direct substitutes within the same automotive-qualified family include ATSAMD21E16L-AF (TQFP package) or ATSAMD21E16B-MFT (different temperature grade). Verify package compatibility and thermal specifications before substitution. Non-automotive equivalents like the ATSAMD21G16 series lack the required FuSa certification.