NvSRAM

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nvSRAM is a type of non-volatile random-access memory (NVRAM).^[1][2] nvSRAM extends the functionality of basic SRAM by adding non-volatile storage such as an EEPROM to the SRAM chip. In operation, data is written to and read from the SRAM portion with high-speed access; the data in SRAM can then be stored into or retrieved from the non-volatile storage at lower speeds when needed.

nvSRAM is one of the advanced NVRAM technologies that are fast replacing the battery-backed static random-access memory (BBSRAM), especially for applications that need battery-free solutions and long-term retention at SRAM speeds. nvSRAMs are used in a wide range of situations: networking, aerospace, and medical, among many others^[3] where the preservation of data is critical and where batteries are impractical.

nvSRAM is faster than EPROM and EEPROM solutions.^{[citation needed]}