The Simtek STK11C68-M is a fast static RAM (35, 45 and 55ns), with a nonvolatile electrically-erasable PROM (EEPROM) 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 EEPROM. Data transfers from the SRAM to the EEPROM (STORE), or from the EEPROM to the SRAM (RECALL) are initiated through software sequences. It combines the high performance and ease of use of a fast SRAM with nonvolatile data integrity.