The FM25H20-DGTR is a 2 Mbit non-volatile FRAM from Cypress's F-RAM series, organised as 256K x 8 and accessed over an SPI bus clocked at 40 MHz. Supply range is 2.7 V to 3.6 V, and the part is rated for -40 to 85 °C, covering industrial enclosures and outdoor telecom cabinets without active cooling. The 8-DFN (5x6) package with exposed pad aids thermal transfer on a compact PCB.
FRAM vs serial Flash — the endurance difference
FRAM writes are inherently non-volatile and do not degrade the cell. The FM25H20-DGTR's FRAM technology supports effectively unlimited write endurance — no wear-leveling firmware needed.
