Electronic System, Sensing Circuit and Sensing Method

A sensing method, for sensing a working status of a real-time clock module, comprising:

• receiving an initial voltage of the real-time clock module;
• comparing the initial voltage with a threshold voltage, to generate a comparison result;
• and
• determining whether the working status of the real-time clock module is normal or abnormal according to the comparison result.

An electronic system, comprising:

• a real-time clock module, for generating a real-time signal;
• a host circuit, for performing operations according to the real-time signal;
• and
• a sensing circuit, coupled to the real-time clock module and the host circuit, for sensing a working status of the real-time clock module, comprising:
• a comparator module, coupled to the real-time clock module, for receiving an initial voltage of the real-time clock module, and comparing the initial voltage with a threshold voltage, to generate a comparison result;
• and
• a storage module, coupled to the comparator module and the host circuit, for storing the comparison result, and delivering the comparison result to the host circuit;
• wherein the host circuit determines the working status of the real-time clock module to be normal or abnormal according to the comparison result.