Capacitive Touch Screen Interface drivers are circuits, which are able to scan sequentially a grid of capacitive touch sensors usually recovering a display. They have fully configurable device parameters (number of used sensors, sensors scan frequency, nominal sensor capacitance value, sensors sensitivity level, IRQ condition …). Parameter configuration is possible either from a host microcontroller through a communication port or from several configuration inputs.
The circuits also have the capacity to detect the most activated sensor in applications where sensors are tightly spaced.
|EM6420||Capacitive Touch Sensor Interface IC|