High-speed serial FRAM

Ramtron’s FM25L256 is a new 256 Kilobit 3V nonvolatile ferroelectric random access memory product with a serial peripheral interface.

Ramtron’s FM25L256 is a new 256 Kilobit 3V nonvolatile ferroelectric random access memory (FRAM) product with a serial peripheral interface.

The new chip reads and writes at bus speeds comparable to those of a high-speed RAM, but provides nonvolatile storage as well. However, unlike EEPROM or Flash, no write delays are incurred. Also like high-speed RAM, the device supports an unlimited number of read or write cycles, whereas EEPROM wears out after approximately one million cycles.

Reads and writes are performed at bus speeds of up to 25MHz throughout the entire memory and there are no maximum write buffer sizes. The product operates from 2.7V – 3.6V, and is rated for the industrial temperature range of -40 degrees C to + 85 degrees C.

Samples of the FM25L256 are available immediately in 8-pin SOIC, with pricing starting at $3.84 in quantities of 10,000.

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