The Cypress FM25CL64B-G is a 64Kbit non-volatile FRAM (Ferroelectric RAM) memory device using the SPI interface. It organizes the memory as 8K x 8 bits and clocks at 20 MHz on the SPI bus. FRAM combines the fast write speed and endurance of SRAM with non-volatility, so no battery backup is needed for data retention. Typical applications include industrial control parameter storage, metering data logs, and point-of-sale transaction buffers where frequent write cycles and instant non-volatility matter.
Package and mounting — 8-SOIC, surface mount, tube delivery
The device is supplied in an 8-SOIC package (3.90mm body width) for surface-mount assembly. The footprint is the common 8-pin SOIC, so it drops onto existing SPI FRAM layouts without a board spin.