The document describes the features and characteristics of the Simtek STK12C68 product, including access times of 25ns to 55ns, automatic storage function, hardware and software initiated storage and recall operations, typical ICC of 10mA, unlimited read, write, and recall cycles, one million store cycles, and one hundred years of data retention. The product is suitable for commercial, industrial, and military temperature environments and is available in 28-pin SOIC, DIP, and LCC packages.