There is no dim adjustment feature in the part, but you can adjust the contrast of the segment by varying V LCD (V LCD = DV DD - GND). The RMS ON voltage is always 1.92V LCD /3, whereas the RMS OFF voltage…
If your DV DD is greater than the absolute maximum rating 6V of the part, then this will influence your LCD RMS OFF and RMS ON rating. Since V LCD = DV DD , the LCD contrast depends on the LCD RMS OFF…
