A data communication method in a single-wire protocol communication is provided. The method includes determining a number of first data bits having a logical high state or a number of second data bits having a logical low state from among data bits in a communication packet, determining whether the number of the first data bits exceeds a first predetermined number or the number of the second data bits is below a second predetermined number, inverting the data bits in the communication packet when the number of the first data bits exceeds the first predetermined number or the number of the second data bits is below the second determined number, and transferring the inverted data bits to a reception side via a single-wire input/output.