Comparator Positive Input Selection

Configuring the PCH bits direct an internal voltage reference or an analog pin to the non-inverting input of the comparator:

PCH	Positive Input Source
111	V_SS
110	FVR_Buffer
101	DAC Output
100	CxPCH not connected
011	CxPCH not connected
010	CxPCH not connected
001	CxIN1+
000	CxIN0+

Important: To use CxINy+ pins as analog input, the appropriate bits must be set in the ANSEL register and the corresponding TRIS bits must also be set to disable the output drivers.

See Fixed Voltage Reference (FVR) for more information on the Fixed Voltage Reference module.

See 5-Bit Digital-to-Analog Converter (DAC) module for more information on the DAC input signal.

Any time the comparator is disabled (CxEN = 0), all comparator inputs are disabled.