 Non-volatile SRAM (nvSRAM) has standard SRAM functionality, but they save the data when the power supply is lost, ensuring preservation of critical information.nvSRAMs are used in a wide range of situationsnetworking, aerospace, and medical, among many otherswhere the preservation of data is critical and where batteries are impractical.Pseudostatic RAM (PSRAM) has a DRAM storage core, combined with a self refresh circuit.