PDF reference, 274 KB, for the 24C164, a cascadable 16 Kbit two-wire serial EEPROM. The file sits in the schematic category but is essentially part documentation with pin functions, device address selection using A0 to A2, page write behaviour and supply ratings. Useful for repairs on equipment where several EEPROMs share an I2C bus, letting you confirm how the address pins are strapped on the PCB. Select the exact type in the programmer, because treating it as a plain 24C16 may give wrong reads, and save a dump first.
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.