4Kbit FRAM with SPI — fits where EEPROM write cycles fall short
The Cypress FM25L04B-DGTR is a 4Kbit non-volatile FRAM memory on the SPI bus, clocked at 20 MHz. Organized as 512 x 8, it operates from 2.7 V to 3.6 V and is rated for -40°C to 85°C ambient.
20 MHz SPI — bus timing and throughput
The 20 MHz SPI clock transfers data at 20 Mbit/s. No page-write wait states: each byte commits on the falling edge of the clock.
Listed as Active with no end-of-life notice. ROHS3 compliant. The base product number is FM25L04, so the -DGTR suffix denotes the Tape & Reel variant of the 8-DFN package. No LTB window to watch; this part is safe to qualify for production.