FM25L16B FRAM
From embeddedTS Manuals
The unit supports an optional non-volatile Ferroelectric RAM (FRAM) device. The Cypress FM25L16B is a 2kbyte device, in a configuration not unlike an SPI EEPROM. However, the nature of FRAM means it is non-volatile, incredibly fast to write, and is specified with 100 trillion read/write cycles per each byte and a 150 year data retention. The device is connected to Linux and presents itself as a flat file that can be read and written like any standard Linux file.