The FM25V05-G is a 512-Kbit (64K × 8) serial F-RAM memory offering high-endurance nonvolatile storage with up to 100 trillion (10^14) read/write cycles and 151-year data retention. Operating from 2.0 V to 3.6 V across -40°C to +85°C, it supports SPI bus speeds up to 40 MHz in modes 0 and 3.