37.1 Overview

The PIC32CX-BZ6 has two 12-bit ADC cores. This ADC core incorporates a multiplexer on the input to facilitate a group of inputs and provides a flexible automated scanning option through the input scan logic.

For the ADC cores, the analog inputs are connected to the Sample and Hold (S&H) capacitor. The ADC cores perform the conversion of the input analog signal based on the configurations set in the registers. When the conversion is complete, the final result is stored in the result buffer for the specific analog input and is passed to the digital filter and digital comparator if configured to use data from this particular sample.

CVD Analog Front End (AFE)

The CVD AFE module provides an analog front end for CVD touch screen applications. It has a selectable capacitance and the ability to pull the capacitor high or low under software command while an external touch load is connected to the common rail of the ADC.