ATSAMD21J17D-AU

Overview

The ATSAMD21J17D-AU is a 32-bit microcontroller based on the ARM Cortex-M0+ core, operating at a maximum frequency of 48MHz. It features 128KB of in-system programmable Flash memory and 16KB of SRAM. The device supports a supply voltage range of 1.62V to 3.63V and includes an internal oscillator. It provides 52 general-purpose I/Os and integrates multiple communication interfaces including USB, SPI, I2C, USART, and LINbus. Analog capabilities consist of twenty 12-bit ADC channels and one 10-bit DAC. The component is housed in a 64-TQFP package with exposed pad and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Functional Safety (FuSa) qualification compliant with AEC-Q100 standards for automotive applications
• Integrated Full-Speed USB Device interface supporting standard communication protocols
• Direct Memory Access (DMA) controller for efficient data transfer between peripherals and memory
• Comprehensive analog subsystem with multiple 12-bit ADC channels and a 10-bit DAC

Applications

• Automotive infotainment systems requiring functional safety compliance
• Industrial control units utilizing LINbus and CAN-compatible serial interfaces
• Portable battery-powered devices leveraging low-voltage operation and power management peripherals
• USB-enabled human-machine interface terminals

Procurement Notes

Verify the specific ordering suffix to confirm packaging type; the AU suffix indicates Tray packaging, while AUT denotes Reel or Cut Tape options. Confirm that the Functional Safety (FuSa) designation aligns with project requirements, as this variant undergoes additional validation processes compared to standard SAM D21 models. Ensure compatibility with existing design-in tools and check for any recent Product Change Notifications regarding assembly sites or labeling updates.

Selection Notes

Select this model when automotive-grade reliability and functional safety certification are mandatory for the application. It is suitable for designs requiring extensive analog input handling via its twenty ADC channels alongside robust digital connectivity options like USB and LINbus. Consider alternative SAM D21 variants if lower pin counts or reduced memory sizes suffice, or if FuSa qualification is not required to reduce cost.

Part Context

This component belongs to the Microchip SAM D21J family, which is part of the broader SAM D21 series designed for high-performance, low-power embedded applications. The 'J' designation typically indicates a specific pin count and peripheral configuration within the family. This series bridges the gap between basic 8/16-bit MCUs and more complex 32-bit processors, offering optimized code density and performance for cost-sensitive markets.

Replacement Considerations

ATSAMD21J17D-AUT serves as the tape-and-reel equivalent with identical electrical characteristics. Other SAM D21J variants may offer different memory sizes or pin counts but require schematic and firmware adaptation.