Combined datasheet PDF of 163 KB covering the 24C01B and 24C02B, serial EEPROMs of 1 Kbit (128 bytes) and 2 Kbit (256 bytes) respectively on the I2C bus. The name gives no device, vendor or board information. Shared sheets like this list pin functions, addressing, electrical limits and write timing for both sizes. Use it to identify which variant is fitted and select the correct type in programmer software. Read and save the original data before any erase, since stored values are often unique to the unit.
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.