ATSAMD21J17D-MU

Overview

The ATSAMD21J17D-MU 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 integrated analog-to-digital converters (20x12-bit) and a digital-to-analog converter (1x10-bit). Connectivity options include I2C, LINbus, SPI, UART/USART, and USB interfaces. It is housed in a 64-VFQFN package with an exposed pad and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Functional Safety (FuSa) certified for automotive applications under AEC-Q100 standards
• Integrated USB 2.0 full-speed device interface for communication
• Supports DMA transfers to reduce CPU load during data movement
• Includes multiple peripheral modules such as I2S, PWM, and watchdog timer

Applications

• Automotive infotainment systems requiring functional safety compliance
• Industrial control units utilizing LINbus or CAN-like protocols
• Portable devices powered by low-voltage battery sources
• USB-enabled consumer electronics and peripherals

Procurement Notes

Verify the specific suffix 'MU' confirms the 64-VFQFN package variant. Confirm the 'D' designation indicates the industrial temperature grade (-40°C to +85°C). Ensure RoHS compliance status matches current regulatory requirements. Check for any recent Product Change Notices regarding packaging or assembly sites. Validate that the source document explicitly lists this part number as active and not obsolete.

Selection Notes

Select this component when automotive functional safety certification is mandatory. Choose this model over non-FuSa variants if system integrity requirements demand AEC-Q100 qualification. Consider the VFQFN package for compact surface-mount designs. Evaluate power consumption against the 1.62V minimum supply requirement. Compare pin counts and peripheral availability with other SAM D21 family members for optimal fit.

Part Context

This microcontroller belongs to the SAM D21J series, which focuses on functional safety applications. It shares the Cortex-M0+ architecture with other SAM D21 models but distinguishes itself through automotive-grade reliability testing. The series provides a balance of processing performance and energy efficiency for embedded control tasks.

Replacement Considerations

ATSAMD21J17D-MUT offers identical electrical specifications but utilizes tape-and-reel packaging instead of trays.