What is spi nor flash, nor flash memory chip, micron nor flash, spi nor flash

 MX25L Series 16 Mbit (16 M x 1) 2.7 - 3.6 V CMOS Serial Flash - SOP-8

https://www.futureelectronics.com/p/semiconductors--memory--flash--norflash--serial/mx25l1606em1i-12gtr-macronix-2089009