Random Access Memory, what is ferroelectric ram, fram memory, spi fram

 CY15B104Q Series 4 Mb (512K x 8) 3.6 V 40 MHz SMT Serial (SPI) F-RAM - SOIC-8

https://www.futureelectronics.com/p/semiconductors--memory--RAM--nvram--fram-mram/cy15b104q-sxi-infineon-3058992