Simtek Corporation, headquartered in Colorado Springs, CO, was an early leader in the development of SONOS memory technology which it used in its nvSRAM product line which featured a SONOS Flash memory coupled with an SRAM shadow memory to achieve both speed and non-volatility. The company was acquired by Cypress Semiconductor in September 2008.
The company sold a product called the NOVRAM (nonvolatile RAM) a Non-volatile random-access memory that combined an SRAM with an EEPROM. It was designed to allow the SRAM to operate (at high SRAM speeds) for most of the time, but when it received a signal (usually sent by the system when a power failure was imminent) the entire contents of the SRAM were copied into the EEPROM at a very high speed thanks to the internal parallelism of the device.
