ATSAMD21J16B-AFT

Overview

The ATSAMD21J16B-AFT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, belonging to the SAM D21G series with Functional Safety (FuSa) certification. It features 64KB of Flash memory and 8KB of SRAM, operating at a maximum frequency of 48MHz. The device supports an operating voltage range of 1.62V to 3.6V and includes integrated analog peripherals such as 14-channel 12-bit ADCs and one 10-bit DAC. It is housed in a 48-TQFP package and certified to AEC-Q100 standards for automotive applications.

Feature Summary

• Functional Safety (FuSa) compliant design for automotive reliability
• AEC-Q100 qualified for extended temperature automotive environments
• Integrated USB full-speed controller with low-power capabilities
• Advanced analog subsystem with multiple ADC channels and DAC

Applications

• Automotive body control modules requiring functional safety
• Instrument clusters and dashboard displays
• Infotainment system controllers
• Sensor interface units in vehicle networks

Procurement Notes

Verify the specific suffix 'AFT' corresponds to the 48-TQFP package and automotive grade when sourcing. Confirm that the FuSa qualification aligns with your project's safety integrity level requirements. Check for any recent Product Change Notifications regarding packaging or manufacturing site changes. Ensure compatibility with existing toolchains for ARM Cortex-M0+ development.

Selection Notes

Select this component if your application demands AEC-Q100 automotive qualification combined with Functional Safety features. Compare pin counts and peripheral sets against other SAM D21 variants like the J-series if higher I/O density is needed. Consider the 48MHz processing speed sufficient for real-time control tasks. Evaluate power consumption profiles against non-automotive alternatives if cost is a primary constraint.

Part Context

This part belongs to the Microchip SAM D21 family, specifically the G-subseries designed for functional safety applications. It shares the Cortex-M0+ architecture with other SAM D21 models but distinguishes itself through automotive certifications and specific peripheral configurations tailored for reliable operation in harsh environments.

Replacement Considerations

Direct substitutes within the same FuSa-qualified automotive line include other SAM D21G variants with different memory sizes or packages. Non-FuSa equivalents like the ATSAMD21J16B exist but lack the required automotive safety certifications.