ATSAMD21J17D-AUT

Overview

The ATSAMD21J17D-AUT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, operating at a maximum frequency of 48MHz. It features 128KB of Flash memory and 16KB of SRAM. The device supports a supply voltage range of 1.62V to 3.63V and includes an internal oscillator. Connectivity options include I2C, LINbus, SPI, USART, and USB interfaces. It provides 52 general-purpose I/Os and integrates peripherals such as DMA, I2S, PWM, and watchdog timers. The unit is housed in a 64-TQFP package with an industrial temperature rating of -40°C to +85°C.

Feature Summary

• Functional Safety (FuSa) qualification compliant with AEC-Q100 standards for automotive reliability
• Integrated USB 2.0 full-speed device interface for communication applications
• Direct Memory Access (DMA) controller for efficient data transfer without CPU intervention
• Multiple analog-to-digital converters with 12-bit resolution for precise signal acquisition

Applications

• Automotive infotainment systems requiring functional safety compliance
• Industrial control units utilizing LINbus and CAN-like protocols
• Portable devices powered by low-voltage battery sources
• Sensor hubs processing data via high-resolution ADCs

Procurement Notes

Verify the specific suffix 'AUT' confirms the tape-and-reel packaging format distinct from tray versions. Confirm AEC-Q100 qualification status aligns with target automotive or industrial requirements. Ensure design-in compatibility with existing firmware libraries for the SAM D21 family. Check for any recent Product Change Notifications regarding pinout or electrical characteristics updates.

Selection Notes

Select this variant when automotive-grade reliability and functional safety certification are mandatory. Choose over non-automotive counterparts if AEC-Q100 validation is required for the end product. Consider the 64-pin TQFP footprint constraints against available PCB real estate. Evaluate the 1.62V minimum supply requirement against system power rail stability during brown-out conditions.

Part Context

This component belongs to the Microchip SAM D21J series, specifically designed for Functional Safety applications. It shares the same core architecture and peripheral set as other SAM D21 variants but carries specific automotive qualification markings. The 'J' designation indicates the pin count and memory configuration within the broader SAM D21 portfolio.

Replacement Considerations

ATSAMD21J17D-AU offers identical electrical specifications but utilizes tray packaging instead of tape-and-reel. ATSAMD21G17A-AU provides similar functionality but in a smaller 48-pin package with reduced I/O count.