Datasheet in PDF form for the IT8987E, an ITE embedded controller of the kind used in laptops to manage power-on, keyboard, battery charging and fan control. The 193 KB document gives pin assignments and functional details. Technicians consult it to identify power and clock pins, check whether the controller receives its standby supply, and locate the lines linked to the EC firmware flash. It is useful alongside a schematic or boardview when diagnosing a board that does not respond to the power button.
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 @ic_mosfet_pdf_datasheets. 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.