MR25H256AMDFR

Memory IC Overview

The MR25H256AMDFR is a 256Kb serial magnetoresistive random-access memory (MRAM) integrated circuit manufactured by Everspin Technologies. It features a 32K x 8 organization with an 8-bit data bus width and operates on a 2.7V to 3.6V supply voltage range. The device utilizes an SPI interface with a clock frequency of 40 MHz. It is housed in an 8-DFN package measuring 5x6 mm and supports surface mount installation. The component is rated for an operating temperature range of -40°C to +125°C and holds AEC-Q100 Grade 1 automotive qualification.

Memory IC Feature Summary

• Non-volatile magnetic storage technology providing infinite endurance without wear-out mechanisms.
• Automotive-grade reliability certified under the AEC-Q100 standard for harsh environments.
• High-speed serial peripheral interface enabling efficient data communication at up to 40 MHz.
• Wide industrial and automotive temperature operation capability from -40°C to +125°C.

Memory IC Applications

• Data logging and parameter storage in electric vehicle powertrains.
• Persistent memory solutions requiring high endurance in automotive systems.
• Industrial control applications needing reliable non-volatile data retention.

Memory IC Procurement Notes

Verify the specific suffix 'AMDFR' indicates the reel packaging variant distinct from the tray-packaged 'AMDF'. Confirm AEC-Q100 Grade 1 compliance and the extended temperature range are required for the target application. Check for any design-in restrictions or purchase limits imposed by distributors. Ensure the 8-DFN footprint matches the PCB layout specifications.

Memory IC Selection Notes

Select this part when infinite write endurance and high-speed serial access are critical. Compare against the MR25H256CDFR if only commercial temperature ranges (-40°C to +85°C) are sufficient, as it may offer different availability. Consider the MR25H256AMDF if tray packaging is preferred over reels. Verify that the 256Kb capacity meets system requirements before choosing larger variants like the MR25H10 series.

Memory IC Part Context

This component belongs to the MR25H256A family of serial MRAM devices. It shares core electrical characteristics with the MR25H256AMDF but differs in packaging format. The family is designed for applications demanding robustness and speed, serving as a replacement for traditional flash or EEPROM technologies in high-cycle environments.

Memory IC Replacement Considerations

The MR25H256ACDFR is a verified substitute within the same manufacturer's portfolio, offering identical electrical specifications and functionality. Both parts utilize the 8-DFN package and support the same SPI interface parameters.

Memory IC FAQ

What is the maximum clock frequency supported by the SPI interface?

The device supports a maximum SPI clock frequency of 40 MHz.

Is this component qualified for automotive applications?

Yes, the MR25H256AMDFR is AEC-Q100 Grade 1 qualified and operates within the -40°C to +125°C temperature range.

How does the MRAM technology affect write endurance compared to Flash?

MRAM provides infinite write endurance, meaning it does not suffer from wear-out mechanisms associated with Flash memory during write cycles.