ATSAMD21J18A-MF

Overview

The ATSAMD21J18A-MF is a 32-bit ARM Cortex-M0+ microcontroller from the SAM D21 series, manufactured by Microchip Technology. It features 256 kB of Flash program memory and 32 kB of SRAM data RAM. The device operates with a maximum clock frequency of 48 MHz and supports a supply voltage range of 1.62 V to 3.63 V. It includes 52 general-purpose I/O pins and integrates multiple communication interfaces including I2C, SPI, USART, LIN, and USB. The component is housed in a 64-pin QFN package and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Automotive-grade qualification compliant with AEC-Q100 standards
• Integrated USB device interface for connectivity
• Advanced analog peripherals including 12-bit ADCs and DAC

Applications

• Automotive infotainment systems
• Body control modules
• Sensor hubs in vehicle networks

Procurement Notes

Verify the specific suffix 'MF' against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with design-in requirements for moisture sensitivity level MSL 3. Cross-reference part numbers with authorized distributors to avoid counterfeit components. Confirm that the automotive qualification status meets specific OEM reliability standards before final procurement.

Selection Notes

Select this model when automotive reliability is required alongside standard SAM D21 functionality. The 256 kB Flash capacity suits complex firmware applications. Consider the QFN-64 package constraints for PCB layout. Verify that the 48 MHz performance meets real-time processing needs. Compare against non-automotive variants if cost reduction is prioritized over AEC-Q100 certification.

Part Context

This component belongs to the SAM D21 family of low-power 32-bit microcontrollers based on the ARM Cortex-M0+ core. The family offers high performance with low power consumption, targeting industrial and automotive markets. The ATSAMD21J18A variant specifically provides enhanced memory resources compared to lower-end models in the same series.

FAQ

Is the ATSAMD21J18A-MF qualified for automotive use?

Yes, the datasheet indicates AEC-Q100 qualification, making it suitable for automotive applications.

What communication interfaces are available on this MCU?

It supports I2C, I2S, LIN, SPI, USART, and USB interfaces.