MX29LA321MB - (MX29LA32xMx) SINGLE VOLTAGE 3V ONLY FLASH MEMORY
Macronix
Download the MX29LA321MB datasheet PDF.
This datasheet also includes the MX29LA320MB variant, as both parts are published together in a single manufacturer document.
Note: The manufacturer provides a single datasheet file (MX29LA320MB_MacronixInternational.pdf) that lists specifications for multiple related part numbers.