Character LCD module datasheet for part PC4004LRU-ASO-B, delivered as a 136 KB PDF. The PC4004 code conventionally means a 40 character by 4 line alphanumeric display, and the LRU-ASO-B suffix specifies backlight, viewing mode, temperature range and revision. Expect the interface pinout, the instruction set of the controller, supply and contrast voltages and the mechanical drawing. A four line 40 character module typically uses two enable lines, so check the pin table carefully when wiring or testing it. Match the label code 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 @acodis_lcd_datasheets_EDID. Enginerys does not host this file.
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