Flash Memory, NOR Flash Memory, SPI NOR flash memory chips

 FL-S Series 256 Mb (32 M x 8) 3.6V 133MHz Non-Volatile SPI Flash Memory - WSON-8

https://www.futureelectronics.com/p/semiconductors--memory--flash--norflash--serial/s25fl256sagnfi001-infineon-7056191