Memory ICs, Serial NOR Flash (SPI) Memory, MX25R6435FZAIL0, Macronix

 MX25R6435F Series 64 Mb (x 1/x 2/x 4) 3.6 V Surface Mount Flash Memory - USON-8

https://www.futureelectronics.com/p/semiconductors--memory--flash--norflash--serial/mx25r6435fzail0-macronix-5065464