The FM22LD16-55-BG is a 4-Mbit (256K × 16) nonvolatile ferroelectric RAM (F-RAM) with 55 ns access time, designed as a drop-in replacement for SRAM. It supports up to 100 trillion read/write cycles and 151-year data retention at 65°C, operates from 2.7 V to 3.6 V across -40°C to +85°C. Features include NoDelay™ writes, page mode operation, software block write-protect, and low power consumption. The 48-ball FBGA package is ideal for industrial applications.