Datasheet in PDF for the 24AA64 and 24LC64, 64 Kbit serial EEPROMs on the I2C two-wire bus. The AA version runs from a lower minimum supply than the LC version, while the memory organisation is the same. A technician relies on it for the pin map, address pin settings, page write buffer size and write-cycle timing when reading or reprogramming the chip. Match the marking on the part, pick the correct device in the programmer software and keep a backup of the original contents before writing a new image.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @cyberlanelectonik. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.