TS-7180 FRAM
From embeddedTS Manuals
The TS-7180 has 4Kbit ferroelectric random access memory (FRAM) organized as 512B. It is accessible via the SPI bus.
The FRAM may be accessed from userspace. It will appear as: /sys/class/spi_master/spi2/spi2.2/eeprom
The datasheet is available from Cypress Semiconductors' website.