Technical datasheet, 135 KB PDF, covering the PC1602LRU-KSO-H-Y2 module, which by its 1602 code is a 16-character, 2-line LCD. KSO-H-Y2 is the full option and variant suffix, possibly relevant to backlight colour or other build details. Sheets like this give connector pinout, electrical ratings, timing and outline dimensions. They let a technician confirm pin functions while probing, check backlight and contrast circuits, and decide whether another 16x2 part is a safe replacement.
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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