Detailed Explanation of MCU Capacitive Touch Sensing Technology Principles 3

After determining the occurrence of the touch operation, the control circuit also needs to determine the location of the touch. This is usually achieved by dividing the touch screen into several areas. Each region corresponds to a capacitive sensor, and the MCU will determine the specific location of the touch based on the change in capacitance value. diode

Finally, the control circuit will transmit the results of the touch operation to the main device, such as a smartphone or tablet, through an interface to achieve the corresponding functions.

In summary, MCU capacitive touch sensing technology detects and locates touch operations by sensing changes in charge on the touched object. It uses capacitive sensors to sense changes in capacitance values, converts them into digital signals through control circuits, and processes them to detect and locate touch operations. This technology has the advantages of high sensitivity, fast response speed, and strong reliability, and is therefore widely used in various electronic products.  diode