NVRAM memory, nvram storage, nvram vs eeprom

 FM24CL04 Series 4 Kb (512 x 8) 3 V 3 us Serial F-RAM Memory - SOIC-8

https://www.futureelectronics.com/p/semiconductors--memory--RAM--nvram--fram-mram/fm24cl04b-gtr-cypress-6004186