STK14C88-3

The Simtek STK14C88-3 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 nonvol atile elements. Data transfers from the SRAM to the nonvolatile elements  (the STORE operation) can take place automatically on power down. A 68µF or larger capacitor tied from VCAP to ground guarantees the  STORE operation, regardless of power-down slew rate or loss of power from "hot swapping". Transfers from the nonvolatile elem ents to the SRAM (the RECALL operation) take place automatically on restoration of power. Initiation of STORE and RECALL cycles can also be software contr -olled by entering specific read sequences. A hardware STORE may be initi ated with the HSB pin.