The ESP430CE1 (integrated in FE42x devices) module incorporates the SD16, hardware multiplier and ESP430 embedded processor engine for single-phase energy metering applications. The module performs metering calculations independent of the CPU. The Scan IF module is a programmable state machine with an analog front-end used to automatically measure linear or rotational motion with the lowest possible power consumption. The module features support for different types of LC and resistive sensors and for quadrature encoding.