The FM1808B-SG is a 256-Kbit (32 K × 8) parallel ferroelectric RAM (F-RAM) in a 28-pin SOIC package, offering nonvolatile storage with SRAM and EEPROM compatibility. It operates from 4.5 V to 5.5 V across –40°C to +85°C, features 70-ns access time, 100 trillion cycle endurance, and 151-year data retention at 65°C.