High-Density 64 kBit I²C F-RAM Memory device | 1MHz, -40 to 85°C, Pure Sn Finish The FM24CL64B-G is a 64-Kbit automotive F-RAM with high-endurance I2C interface, supporting up to 10 trillion read/write cycles and 121-year data retention. Operating from 3.0 V to 3.6 V across –40°C to +125°C, it features NoDelay™ writes at bus speed, low power consumption, and direct hardware replacement for serial EEPROM. AEC-Q100 Grade 1 and RoHS compliant, it is ideal for data logging and industrial control applications requiring frequent writes.