Bus Interface For Highresolution Liquid Crystal Screens Part 2

,7ecemb.„98. BUS INTERFACE FOR HIGH- RESOLUTION LIQUID CRYSTAL SCREENS Construction The LC screen interface is constructed on a double-sided, through-plated printed circuit board (see Fig. 4). The track layout is not given here because this PCB is virtually impossible to make other than from films, while through- plating equipment is usually only available in a professional workshop. The size of the ready-made PCB is such that it can be attached to the controller board of the LM40001 unit with the aid of 4 spacers. The connection between the interface board and the existing con- troller board is conveniently made in a short length of 10-way flat ribbon cable. The mounting of the standard-sized components on the board should not present difficulties. Only the controller, IC8, deserves special attention. This IC is housed in a 64-pin flatpack enclosure for surface mounting, with pins in a 1 mm, rather than a 0.1 in., raster. Use a low-power soldering iron with a small tip to solde...