I am considering using a non-character based LCD display for a
future project. After searching these forums and the net it seems that there isn't a common standard for these types of displays, and the data sheets I've looked at contain very little information.
For example, Mouser lists an
Optrex panel that is 128x64 pixels, transflective with a white LED backlight for $27.99. Not a bad looking panel for the price. Well, the
**broken link removed** doesn't make the first mention of the communication protocol. It only contains specifications, and says nothing at all about commands, data transfer, etc.
So how in the world are people to make use of these things if the necessary information is not available? Do these displays have a buffer? Specifically, once the bitmap is transferred to the display will it continue to display it until it new data is uploaded, or must it be continually refreshed at some minimum frequency to keep the display from flickering?
Now I could make use of a character based display, but only if there are no gaps between characters. I could simply define custom characters for my bitmaps, but that would not have the desired affect if the pixels are not continuous across the display. All of the panels I have looked at have those gaps. Anyone know of one that is character based with continuous pixels?
Thanks.
Dan East