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AN97798 - Migrating from I2C EEPROM to Cypress's I2C F-RAM™ | Cypress Semiconductor

AN97798 - Migrating from I2C EEPROM to Cypress's I2C F-RAM™

Last Updated: 
Mar 02, 2021

AN97798 provides an overview of the advantages of Cypress’s I2C F-RAM™ solution and the differences to be considered when migrating from an I2C EEPROM. It also describes the benefits of the migration.


Cypress’s F-RAM has fast SRAM cells and provides virtually infinite (10E+14) read/write endurance cycles, orders of magnitude higher than an EEPROM. The F-RAM performs write operations at the bus speed without incurring any write delays (NoDelay™), unlike serial EEPROMs and flash memories. Data is written directly into the F-RAM array, and the next bus cycle can start immediately, without checking the readiness of the device. Serial I2C F-RAM devices are available as drop-in replacements for standard I2C EEPROM devices.

This application note shows the differences between an industry-standard I2C EEPROM and an I2C F-RAM. These differences need to be considered when migrating from an I2C EEPROM-based solution to Cypress’s I2C F-RAM solution.

Dear valued customer,

Thank you for choosing our products. They come with all the know-how and passion that our engineers have put into it. As you probably already know, Cypress is now Infineon. This is a major step for our company, but also for the good of you. 

Reliability and business continuity are of utmost importance for us. Hence, we remain fully committed to honoring existing customer and distributor relationships. This includes offering the legacy Cypress product portfolio. We thank you very much for your trusting support.

For the full version of this message, please download the PDF version.

Translated documents are for reference only. We recommend that you refer to the English-language version of a document if you are engaged in development of a design.