DESCRIPTION The Xicor X20C17 is a 2K x 8 NOVRAM featuring a high speed static RAM overlaid bit-for-bit with a nonvolatile electrically erasable PROM (E2PROM) and the AUTOSTORE feature which automatically saves the RAM contents to E2PROM at power-down. The X20C17 is fabricated with advanced CMOS floating gate technology to achieve high speed with low power and wide power-supply margin. The X20C17 features a compatible JEDEC approved byte-wide memory pinout for industry standard SRAMs. FEATURES • 24-Pin Standard SRAM DIP Pinout • Fast Access Time: 35ns, 45ns, 55ns • High Reliability —Endurance: 1,000,000 Nonvolatile Store Operations —Retention: 100 Years Minimum • AUTOSTORE™ NOVRAM —Automatically Stores SRAM Data Into the E2PROM Array When VCC Low Threshold is Detected —E2PROM Data Automatically Recalled Into RAM Upon Power-up • Low Power CMOS —Standby: 250µA • Infinite E2PROM Array Recall, and RAM Read and Write Cycles
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