Memory ICs, what is Non Volatile SRAM, non-volatile random access memory

 M95M02 Series 2 Mb (256 K x 8) 5.5 V Serial SPI Bus EEPROM - SOIC-8

https://www.futureelectronics.com/p/semiconductors--memory--RAM--nvram--quantum-trap-nvsram/m95m02-drmn6tp-stmicroelectronics-3034532