EA TOUCH240-3 Touch panel, analog, for gluing on

TOUCH PANEL EA TOUCH240-3 An analog touch panel is available as an accessory. It has a selfadhesive material on its rear side that makes it simply to stuck onto the display. The connection is made by means of a 4-pin flexible cable for a ZIF connector (e.g. EA WF100-04S) with a grid of 1.0 mm. Bending radius is defined with min. 5mm. For optimum readability we recommend that you use a backlight with the display. Interfacing to a µC can be either done via external touch panel controller or directly with a µC that is featured with analogue inputs. How to work with it ? The touch panel is similar to a potentiometer: connecting a voltage of e.g. 3.3V to the pins Top-Bottom makes it possible to read out a voltage on pin Left or Right which is linear to the Y-coordinate of the pressed point. The Xcoordinate will result when the voltage will be supplied to Left-Right and measurement is done at Top or Bottom. The pinout of the connecting cable is shown in the drawing.