Everspin Technologies, Inc.

MR25H256MDF

MR25H256MDF Description

The MR25H256MDF is a high-performance, non-volatile Magnetoresistive Random Access Memory (MRAM) IC designed for demanding automotive applications. Manufactured by Everspin Technologies, Inc., this memory chip offers a robust combination of speed, reliability, and endurance. The MR25H256MDF features a 32K x 8 memory organization, providing a total memory size of 256 Kbit. It operates at a clock frequency of 40 MHz, ensuring fast data access and transfer rates. The device is designed to work within a supply voltage range of 2.7V to 3.6V, making it suitable for a variety of power supply configurations.

MR25H256MDF Features

• Memory Interface: The MR25H256MDF utilizes the SPI (Serial Peripheral Interface) protocol, which is widely used in embedded systems for communication between microcontrollers and various peripherals. This interface allows for efficient data transfer and control.
• Memory Organization: The memory is organized as 32K x 8, which means it has 32,768 memory locations, each capable of storing 8 bits of data. This organization provides a balance between memory capacity and addressability.
• Clock Frequency: With a clock frequency of 40 MHz, the MR25H256MDF can handle high-speed data operations, making it ideal for applications requiring rapid data access and processing.
• Voltage - Supply: The device operates within a supply voltage range of 2.7V to 3.6V, offering flexibility in power supply design and compatibility with various power sources.
• Moisture Sensitivity Level (MSL): The MR25H256MDF has an MSL rating of 3 (168 hours), indicating its resistance to moisture, which is crucial for reliability in automotive environments.
• Compliance: The device is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and regulatory standards for use in modern electronics.
• Mounting Type: The surface mount package type allows for efficient integration into compact and high-density PCB designs.

MR25H256MDF Applications

The MR25H256MDF is particularly well-suited for automotive applications due to its high reliability, endurance, and performance. Some specific use cases include:

• Automotive Control Systems: The fast access times and non-volatile nature of the MR25H256MDF make it ideal for storing critical control parameters and data in automotive electronic control units (ECUs).
• Data Logging: The device can be used for logging vehicle data, such as sensor readings and diagnostic information, which need to be retained even when power is lost.
• Firmware Storage: The MR25H256MDF can store firmware for automotive systems, ensuring quick boot-up times and reliable operation.
• Safety-Critical Applications: The robustness and reliability of the MRAM technology make it suitable for safety-critical applications where data integrity is paramount.

Conclusion of MR25H256MDF

The MR25H256MDF is a high-performance MRAM IC that offers significant advantages over traditional memory technologies. Its fast access times, non-volatile nature, and robustness make it an ideal choice for automotive applications. While it is marked as "Not For New Designs," the MR25H256MDF remains a reliable option for existing systems and legacy designs. Its compliance with environmental and regulatory standards ensures it meets the requirements for modern electronics. For engineers and designers looking for a reliable, high-speed memory solution for automotive applications, the MR25H256MDF is a compelling choice.