ATSAMD21J17D-AF

Overview

The ATSAMD21J17D-AF is a 32-bit microcontroller based on the ARM Cortex-M0+ core, part of the SAM D21J Functional Safety series. It features 128KB of Flash memory and 16KB of SRAM. The device operates at a maximum frequency of 48MHz with a supply voltage range of 1.62V to 3.63V. It includes 52 I/O pins, an internal oscillator, and supports interfaces such as I2C, SPI, UART/USART, USB, and LINbus. The component is housed in a 64-TQFP package and is qualified to AEC-Q100 standards for automotive applications.

Feature Summary

• Integrated functional safety capabilities aligned with automotive reliability standards
• Supports multiple communication protocols including USB and LINbus for versatile connectivity
• Includes analog peripherals with 20-channel 12-bit ADC and 1-channel 10-bit DAC

Applications

• Automotive electronic control units requiring AEC-Q100 qualification
• Industrial systems utilizing LINbus or CAN-compatible serial interfaces
• Consumer devices requiring low-power 32-bit processing with USB connectivity

Procurement Notes

Verify the specific suffix 'AF' against official Microchip documentation to confirm the tray packaging configuration and temperature grade. Ensure compatibility with design-in requirements by cross-referencing the latest datasheet errata and pinout definitions. Confirm that the 64-TQFP package dimensions match the target PCB footprint specifications.

Selection Notes

Select this model when automotive-grade reliability and functional safety compliance are mandatory. The 128KB Flash capacity suits complex firmware applications, while the 48MHz speed balances performance and power consumption. Consider the TQFP-64 package if through-hole or standard surface-mount assembly processes are preferred over QFN alternatives.

Part Context

This component belongs to the SAM D21 family, which provides high-performance 32-bit solutions based on the ARM Cortex-M0+ architecture. The D-series designation indicates extended industrial temperature ranges suitable for demanding environments. The AF suffix typically denotes specific packaging and temperature variants within the broader SAM D21 product line.

Replacement Considerations

ATSAMD21J17D-AU: Same electrical specifications but in a different package type.