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DESCRIPTION

The Simtek STK11C48 is a fast static RAM with a nonvolatile element incorporated in each static memory cell. The SRAM can be read and written an unlimited number of times, while independent, nonvolatile data resides in the Nonvolatile Elements. Data transfers from the SRAM to the Nonvolatile Elements (the STORE operation), or from Nonvolatile Elements to SRAM (the RECALL operation), take place using a software sequence. Transfers from the Nonvolatile Elements to the SRAM (the RECALL operation) also take place automatically on restoration of power.

FEATURES

? 25ns, 35ns and 45ns Access Times

? STORE to Nonvolatile Elements Initiated by Software

? RECALL to SRAM Initiated by Software or Power Restore

? 10mA Typical ICC at 200ns Cycle Time

? Unlimited READ, WRITE and RECALL Cycles

? 1,000,000 STORE Cycles to Nonvolatile Elements

? 100-Year Data Retention in Nonvolatile Elements

? Commercial and Industrial Temperatures

? 28-Pin 300 mil PDIP, 300 mil SOIC and

350 mil SOIC Packages