256 Kbit FRAM with 40 MHz SPI — what you get
The FM25V02-DG is a 256 Kbit non-volatile FRAM organized as 32K x 8 bits, accessed through a 40 MHz SPI interface. The part comes in an 8-WDFN exposed-pad package for surface-mount assembly.
Obsolete — plan your last-time-buy now
For a production BOM that requires this exact footprint and SPI FRAM density, the remaining independent-distribution stock is the available channel.
What the 40 MHz SPI and 256 Kbit mean for your design
The 40 MHz SPI clock supports fast read/write cycles for non-volatile storage — useful for parameter logging, configuration snapshots, or buffer writes where EEPROM write-cycle delays would stall the system. The 256 Kbit (32K x 8) density fits moderate-size data tables or event logs.
Package and thermal pad — layout note
The pad is electrically connected to ground — confirm the ground-plane stitch in the layout review.