An integrated circuit with data communication stability in a noise environment includes at least one input section through which a signal is input from a user, at least one output section through which information is output in a predetermined form, and a microcontroller unit (MCU), independently of the microcontroller unit (MCU), and communicates with the microcontroller unit to control, on the basis of the input signal generated from the at least one input section, output driving of the output section corresponding thereto, the integrated circuit including: a serial interface that includes an Rx pin for receiving a data signal from the microcontroller unit by forming a signal reception line with respect to the microcontroller unit and a Tx pin for transmitting a data signal to the microcontroller unit by forming a signal transmission line with respect to the microcontroller unit.