COLORADO SPRINGS, COLO. Ramtron International Corp. is sampling a 256-kbit ferroelectric RAM with an industry-standard two-wire interface. Since the technology operates like conventional RAMs but also provides nonvolatile storage, director of marketing Michael Alwais suggested that the MF24C256 can serve as a cost-effective replacement for battery-backed SRAMs. Appli- cations include utility metering and real-time configuration storage.
The FM24C256 has a maximum clock speed of 1 MHz, and write operations have zero delay. The product claims to offer over 10 years of data retention and 10 billion write cycles, and is specified over the -40 degrees C to 85 degrees C industrial temperature range.
Alwais said that FRAM offers E2PROM users extra functionality while also eliminating the backup battery and saving system costs in SRAM applications. The device is protocol compatible with industry-standard two-wire E2PROMs and it extends Ramtron's portfolio of serial memories, which ranges from 4 to 256 kbits.
The FM24C256 is manufactured on a 0.5-micron FRAM line and operates on low power, without the need for a charge pump or other circuit overhead. Samples are available in 20-pin small-outline packages. The memory is priced from $3.90 in quantities of 10,000.
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EETInfo No. 611