PDF datasheet of 122 KB for graphic display PG240128LRS-BNN-H, with a P1 tag that likely marks page or edition one of the document. By the usual pattern the module is a 240 x 128 dot LCD, and the LRS-BNN-H suffix fixes backlight, polarizer and revision details. Technicians consult it for the connector pinout, logic and negative bias voltage values, controller timing and outline dimensions. It is handy when a display has lost contrast or must be swapped. Make sure the suffix printed on your module matches this one before using its ratings.
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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