The Simtek AutoStore nvSRAM family consists of fast static RAMs with non-volatile Quantum Trap storage element included with each memory cell. The SRAM provides the fast access & cycle times, ease of use and unlimited read & write endurance of a normal SRAM. 

Data transfers automatically to the non-volatile storage cells when power loss is detected (the STORE operation). On power up, data is automatically restored to the SRAM (the RECALL operation). Both STORE and RECALL operations are also available under software control.

Every one of these devices uses an external VCAP capacitor for its short term energy source for non-volatile storage cycles.