Ramtron introduced a nonvolatile memory which it claims features unlimited endurance. The 256 Kb FM18L08 is a 3 V FRAM product, offering an unlimited number of read and write cycles - a feature never before available in commercial nonvolatile memories. FRAM technology guarantees an endurance specification of at least 10 quadrillion (1016) read/write cycles, according to Ramtron. Each memory location within the FM18L08 could be accessed one million times per second for more than three hundred years without loss of data retention. Ramtron's increased endurance specification eliminates the endurance gap between nonvolatile and volatile memory, thereby removing a critical barrier in FRAM's ability to replace ubiquitous SRAM and DRAM memories.
FRAM operates like a random access memory but also provides nonvolatile data storage. Data nonvolatility is achieved by applying an electric field to ferroelectric crystals within the memory cell. As the field is applied, central atoms within the crystals move in the direction of the field to store digital '1s' and '0s'. When the electric field is removed, the atom remains in position without power. Unlike other nonvolatile memories, there is no physical barrier to break-down and wear out.
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