Not sure if this is exactly "beginner" but I'm not sure where else it fits. For power reasons (and uC pin count) I would like to drive a single COM LCD display with a 1621 derivative LCD driver. The 1621 says that it can so 1/2 or 1/3 bias and 2 to 4 COMs. Does this mean I'm out of luck? Or can I hook up, say, 2 COM outputs to the same single COM on the display and just drive it twice? This is for custom glass that I am having built, but it was only after the drawings came back that I was able to test the setup and realized that I really need an LCD driver rather than relying on the uC. Anyone have any experience in this department?