FM25L04B in Cypress / Infineon FM24 & FM25 FRAM Family
The FM25L04B is a family of 4-kilobit non-volatile Ferroelectric RAM (F-RAM) devices manufactured by Infineon Technologies (formerly Cypress Semiconductor). These components utilize an advanced ferroelectric process to combine the fast writing speed of RAM with the non-volatile data retention of ROM. Operating over an SPI interface, these devices offer virtually unlimited endurance and low power consumption, making them ideal replacements for EEPROM and serial flash in applications requiring frequent or high-speed data logging.
Variants in This Sub-Family
Variants within the FM25L04B sub-family primarily differ by packaging and shipping configurations rather than core performance specifications. Common options include the 8-pin SOIC and 8-pin DFN packages. Ordering codes such as -G indicate green/RoHS compliance, while suffix -GTR specifies tape and reel packaging for automated assembly. All variants maintain the same 4Kb density and 20 MHz SPI timing characteristics across the industrial temperature range.
