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This application report discusses the design of a single-touch capacitive sensor interface using the MSP430 microcontroller. With ultra-low power features and integrated peripherals, integrating a single-touch user interface into MSP430 applications can be readily accomplished. This application report provides an overview of the technology, details about system careabouts and details for different methodologies of capacitive touch sensing implementations using the MSP430 family. Figure 1 shows a graphical high level representation of the system described in detail in the remainder of the document.

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