Device and methods for reconfigurable analog input monitoring

A system comprising:

• an analog-to-digital converter (ADC) to receive at least one analog input signal;
• a voltage source to output a threshold voltage, the threshold voltage based on a predetermined condition;
• a switch to selectively couple the at least one analog input signal to a comparator, the comparator to receive the threshold voltage, and the comparator to generate a comparator output based on a comparison of the at least one analog input signal and the threshold voltage;
• a comparator output polarity control circuit to generate an output based on the output of the comparator and based on a polarity configuration setting;
• a comparator output counter to count edges of a clock signal based on the output of the comparator output polarity control circuit, the count comprising a comparator output counter value, and to generate one or more monitor outputs based on the comparator output counter value;
• and
• a microcontroller to receive the one or more monitor outputs.

A method comprising:

• configuring a voltage source to output a threshold voltage;
• comparing an analog input signal to the threshold voltage;
• obtaining a comparison result;
• counting, based on the comparison result, edges of a clock signal, the count comprising a comparator output counter value;
• generating one or more monitor outputs based on the comparator output counter value;
• and
• modifying system operation based on the one or more monitor outputs.