Click here for Dutch version

Homepage Museum Conversion Surplus Info Microchip PDF Format APRS ATV HF News DIY kits Price list Events Links Site map VERON VRZA

Driving an LCD display with just 3 wires Most LCD displays are controlled through some kind of parallel bus. This means that at least 8 lines (plus strobe) are needed to drive the display. Most controllers only have a limited number of data lines and you probably would like to use some of these lines for other purposes. In the past, some curcuits have been published that require only four lines to drive an LCD, but the circuit described here only uses three wires. Please examine the circuit diagram carefully to find out how it works and use it to your advantage. The source code is available and can be downloaded below. Full comments are available within the source (in English).   Circuit diagram Download Source and diagram for 3-wire LCD control 19K ZIP file This ZIP file contains the full source code and the circuit diagram. It allows you to control a standard LCD display from a PIC micro controller using 3 wires only. The circuit diagram is included as a GIF image (18 KB).

	Any orange coloured links are currently unavailable\ © Copyright Museum Jan Corver Last changed: Mon,16 Oct 2006.16:36:46