ATSAMD21J17D-MFT

Overview

The ATSAMD21J17D-MFT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, belonging to the SAM D21J Functional Safety (FuSa) series. It features 128KB of flash memory and 16KB of SRAM, operating at a maximum frequency of 48MHz. The device supports a supply voltage range of 1.62V to 3.63V and includes 52 I/O pins. Connectivity options include I2C, LINbus, SPI, UART/USART, and USB. It integrates 20-channel 12-bit ADCs, one 10-bit DAC, DMA, I2S, PWM, and watchdog timers. Packaged in a 64-QFN (9x9) format, it is qualified to AEC-Q100 standards for automotive applications with an operating temperature range of -40°C to 125°C.

Feature Summary

• AEC-Q100 qualified for functional safety compliance in automotive environments
• Integrated full-speed USB device and embedded host controller capabilities
• Supports up to 60 touch channels via capacitive sensing peripherals
• Configurable Serial Communication Modules (SERCOM) for flexible interface selection

Applications

• Automotive infotainment systems requiring functional safety certification
• Industrial metering and control devices
• Home automation controllers
• Consumer electronics with USB connectivity requirements

Procurement Notes

Verify the specific suffix 'MFT' corresponds to the tape and reel packaging variant when ordering. Confirm that the AEC-Q100 qualification and FuSa designation are required for the target application. Check current datasheet revisions for any errata or design changes affecting pinout or electrical characteristics before finalizing procurement specifications.

Selection Notes

Select this model over non-automotive variants if AEC-Q100 reliability and functional safety documentation are mandatory. Ensure the 64-QFN package fits the PCB footprint constraints compared to BGA alternatives like the CU suffix. Verify that the 125°C extended temperature rating meets environmental conditions, as other variants may be limited to 85°C.

Part Context

This component is part of the Microchip SAM D21 family, designed for low-power, high-performance applications. It shares architectural similarities with the SAMD21G series but offers enhanced automotive-grade qualifications. The J-series typically provides higher memory capacities and additional I/O resources compared to smaller packages in the same family.

Replacement Considerations

ATSAMD21J17D-MF is a tray-packaged equivalent with identical electrical specifications. ATSAMD21J17D-MUT is a similar QFN variant but may differ in temperature grade or packaging configuration. Cross-referencing with ATSAMD21J18D-AFT requires verification of memory size differences.