ATSAMD21J17D-AFT

Overview

The ATSAMD21J17D-AFT is an ARM Cortex-M0+ microcontroller from the SAM D21J series, designed for functional safety applications. It features a 48 MHz maximum clock frequency, 128 kB of Flash program memory, and 16 kB of SRAM data memory. The device operates within a voltage range of 1.62 V to 3.63 V and supports an extended industrial temperature range from -40°C to +125°C. It includes 52 general-purpose I/Os, 20 ADC channels, and interfaces such as USB, SPI, I2C, USART, LIN, and I2S. The component is AEC-Q100 qualified and housed in a TQFP-64 package.

Feature Summary

• Integrated USB interface for communication capabilities
• AEC-Q100 qualification for automotive reliability standards
• Extended operating temperature range suitable for harsh environments
• Functional Safety (FuSa) design compliance

Applications

• Automotive electronic control units
• Industrial automation controllers
• Consumer devices requiring extended temperature tolerance
• Safety-critical embedded systems

Procurement Notes

Verify the specific suffix 'AFT' corresponds to the TQFP-64 package and tape-and-reel shipping format. Confirm that the extended temperature rating (+125°C) matches the application requirements. Ensure compatibility with the SAM D21 family development tools. Check for any recent product change notices regarding packaging or manufacturing sites. Validate RoHS compliance status for the target region.

Selection Notes

Select this model when automotive-grade reliability and functional safety are required alongside USB connectivity. Compare against other SAM D21 variants based on memory size and package constraints. Consider the TQFP-64 form factor for prototyping ease versus smaller packages like QFN or BGA for final production density. Evaluate power consumption profiles against the 1.62V to 3.63V supply range.

Part Context

This component belongs to the Microchip SAM D21J family, which focuses on functional safety for automotive and industrial markets. It shares the Cortex-M0+ core architecture with other SAM D21 models but distinguishes itself through its specific memory configuration and extended temperature rating. The J17 designation indicates the 128 kB Flash variant within this safety-oriented series.

Replacement Considerations

ATSAMD21J17D-MFT offers identical electrical specifications but uses a 64-QFN package instead of TQFP-64. ATSAMD21J17D-CU provides the same performance in a 64-UFBGA package. Verify pinout compatibility and thermal management requirements when substituting between these package types.