Capacitive Sensing—Power and Sleep Considerations

This Application Note describes power consumption and sleep considerations with PSoC CapSense. In battery-powered applications, lower current levels translate into longer battery life. With this in mind, a system designer should adjust system parameters so that specifications are met with the minimum active current. In PSoC capacitive sensing applications, active current can be minimized through a number of programmable settings including the CPU clock speed and sleep mode. This Application Note shows how to minimize active current and incorporate sleep mode into button sensing applications.