PIC16LF874单片机在电容测量模块中的应用

In this paper, the application background and domestic and foreign present situations of micro capacitance measurement circuit are elaborated. The paper detailedly introduce’ PIC16LF874 characteristic.Aimed at the principle of work of mercury capacitance acceleration transducer , the design of micro capacitance measurement circuit is based on the key PIC16LF874 chip.The measurement circuit principal include hardware part and software part.The module can measure micro high precision capacitance,have a good application prospect.