MPR111EK

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MPR111EK is a capacitive touch microcontroller designed for a variety of applications. The microcontroller integrates an 8-bit microprocessor core, a capacitive sensing engine, an analog to digital converter, and an 8-channel general purpose, 12 bits ADC. The MPR111EK is a simple, low-power solution for detecting human interface events and controlling the user experience in a variety of applications.

The most common application field of the MPR111EK is in the implementation and development of capacitive touchscreens. In a touchscreen, the microcontroller is used to detect the position of a finger on the surface of the touch screen. When the user puts a finger on the surface, the microcontroller measures the capacitance of the area under the finger and calculates the position of the touching point. With this information, the microcontroller can then send signals to the display for appropriate processing or triggering of events.

In addition to capacitive touchscreens, the MPR111EK is used in a variety of other applications. The capacitive sensor can be used for various other tasks, such as detecting presence, measuring force and pressure, or for contactless touch-sensitive buttons or keys. It can also be used in medical and healthcare applications, such as monitoring breathing and vital signs.

Other applications of the MPR111EK include temperature sensing, motion detection, and ambient light sensing. The microcontroller is also used in a variety of industrial applications, including vibration, shock, and acceleration sensing.

The working principle of the MPR111EK is based on the measurement of the electrostatic capacitance between two electrodes. It relies on two principles: self-capacitance and mutual capacitance. In the self-capacitance technique, the capacitance between two electrodes is measured by a single electrode and the change in capacitance is used to detect changes in adjacent objects or environment. On the other hand, the mutual capacitance technique involves two electrodes in which an applied AC signal is seen as an alternating current. This alternating current is used to measure the changes in capacitance between the two electrodes, which can be used to detect changes in environment or adjacent objects.

The MPR111EK is a low-power and cost-effective solution for a variety of capacitive touch applications. Its integrated features make it the perfect choice for applications requiring cost-sensitive solutions. The microcontroller has a wide range of applications in the industrial, medical, and consumer fields.

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