MR25H40VDFR

Memory IC Overview

The MR25H40VDFR is a 4Mbit Magnetoresistive Random Access Memory (MRAM) IC manufactured by Everspin Technologies. It features a Serial Peripheral Interface (SPI) with a clock frequency of 40 MHz and an access time of 9 ns. The device offers a memory organization of 512K x 8 bits and operates within a voltage range of 2.7V to 3.6V. It is housed in an 8-DFN-EP package with a small flag (5x6 mm). The component supports AEC-Q100 Grade 1 standards and functions across a temperature range of -40°C to +125°C.

Memory IC Feature Summary

• Provides unlimited write endurance characteristic of MRAM technology, eliminating wear-out mechanisms found in flash or EEPROM.
• Enables direct replacement for legacy non-volatile memories such as EEPROM, Flash, and FeRAM due to comparable pinouts and interfaces.
• Supports high-speed SPI communication at 40 MHz, facilitating rapid data transfer for dynamic reconfiguration applications.

Memory IC Applications

• Dynamically reconfigurable Field Programmable Gate Arrays (FPGAs)
• Industrial control systems requiring high reliability
• Automotive electronics compliant with AEC-Q100 standards

Memory IC Procurement Notes

Verify the specific suffix 'V' indicates AEC-Q100 Grade 1 qualification and extended temperature range (-40°C to +125°C). Confirm the package type is 8-DFN-EP with a small flag. Ensure the SPI interface speed matches the 40 MHz requirement. Check RoHS compliance status against current regulatory requirements. Validate that the 2.7V to 3.6V supply voltage aligns with system power rails.

Memory IC Selection Notes

Select this part when non-volatile storage requires unlimited endurance and fast write speeds compared to traditional Flash or EEPROM. The 4Mbit capacity suits applications needing moderate data retention without complex erase cycles. The SPI interface simplifies PCB routing compared to parallel interfaces. Consider the 8-DFN-EP package for compact surface-mount designs. Verify thermal performance meets system constraints within the -40°C to +125°C operating range.

Memory IC Part Context

This component belongs to the Everspin MR25Hxx series of serial MRAM devices. The series includes variants like MR25H40 and MR25H256, offering different capacities. The MR25H40VDFR specifically targets automotive and industrial markets with its AEC-Q100 Grade 1 certification. It shares the base MR25H40 architecture but adds qualified temperature and voltage specifications.

Memory IC Replacement Considerations

• MR25H40CDFR
• MR25H40DFR

Memory IC FAQ

What is the maximum SPI clock frequency for the MR25H40VDFR?

The maximum SPI clock frequency is 40 MHz.

Does the MR25H40VDFR support automotive applications?

Yes, it is AEC-Q100 Grade 1 qualified and operates from -40°C to +125°C.

How does the MR25H40VDFR compare to EEPROM in terms of endurance?

It offers unlimited write endurance, whereas EEPROM has limited cycle life.