ATSAMD21J17A-MF

Overview

The ATSAMD21J17A-MF 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-QFN (9x9) package and is rated for industrial temperature ranges.

Feature Summary

• Integrated functional safety capabilities aligned with automotive reliability standards
• Supports direct connection via built-in USB interface without external transceiver
• Includes dedicated hardware peripherals for pulse width modulation and direct memory access

Applications

• Automotive body control modules requiring functional safety certification
• Industrial communication gateways utilizing LINbus or USB connectivity
• Battery-powered devices leveraging low-voltage operation and power management peripherals

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with required functional safety standards if used in certified systems. Cross-reference datasheet revisions for any errata affecting pin configurations or electrical characteristics prior to final design approval.

Selection Notes

Select this variant when a 64-pin QFN footprint is required for space-constrained designs. Choose over TQFP versions if board real estate is limited. Consider the AEC-Q100 qualification status for applications demanding automotive-grade reliability. Verify that the 128KB program memory meets application code size requirements.

Part Context

This component belongs to the SAM D21J family, which emphasizes functional safety for automotive and industrial markets. It shares the Cortex-M0+ architecture with other SAM D21 variants but differs in memory size, package options, and specific qualification levels. The J-series designation typically indicates specific pin counts and peripheral sets within the broader product line.

FAQ

Is the ATSAMD21J17A-MF qualified for automotive applications?

Yes, the SAM D21J series is AEC-Q100 qualified, indicating compliance with automotive reliability standards.

What is the maximum operating speed of this microcontroller?

The device supports a maximum system clock frequency of 48MHz.