FRAM memory, ferroelectric random access memory, DRAM, What is NVRAM

 FM24W Series 64 Kb (8 K x 8) 2.7 - 5.5 V 3 us Serial F-RAM Memory - SOIC-8

https://www.futureelectronics.com/p/semiconductors--memory--RAM--nvram--fram-mram/fm24w256-g-cypress-8002278