MR20H40CDF

Memory IC Overview

The MR20H40CDF is a magnetoresistive random access memory (MRAM) device manufactured by Everspin Technologies. It provides a storage capacity of 4 Mbit, organized as 512K x 8 bits. The component operates with a 3.3V power supply and supports a Serial Peripheral Interface (SPI) clock rate up to 50 MHz. It is housed in an 8-lead Dual Flat No-lead (DFN) package.

Memory IC Feature Summary

• Supports random address immediate writing without page programming or erase operations
• Offers unlimited write endurance for frequent data recording scenarios
• Ensures long-term data retention exceeding 20 years within the industrial temperature range
• Provides compatibility with serial EEPROM and Flash interfaces for simplified hardware upgrades

Memory IC Applications

• Industrial control systems requiring non-volatile memory
• Smart metering devices needing reliable data logging
• Data recorders demanding high write durability

Memory IC Procurement Notes

Verify the specific suffix against official datasheets to confirm voltage and package variations. Confirm lead times due to reported long delivery periods. Ensure the selected variant matches the required operating temperature range and interface timing specifications for the target application design.

Memory IC Selection Notes

Select this component when applications require non-volatile memory with infinite write endurance and low latency. It serves as a direct replacement for serial EEPROM, Flash, and FeRAM in designs needing robust data retention. Verify that the SPI interface timing and 3.3V supply align with the system architecture requirements.

Memory IC Part Context

This part belongs to the MR2xH40 family of 4-Mbit MRAM devices from Everspin Technologies. The family shares common features such as SPI compatibility and DFN packaging options. Variants within the series may differ in temperature grades, package styles, or specific interface speeds, necessitating careful model code verification during selection.

Memory IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.