Control circuit and display apparatus utilizing the same

A display apparatus comprising:

• a display device comprising a first input pin and a second input pin;
• a capacitive touch device comprising a first sensing pin and a second sensing pin;
• and
• a control circuit comprising:
• a first input-output pin configured to be coupled to the first input pin and the first sensing pin;
• a second input-output pin configured to be coupled to the second input pin and the second sensing pin;
• a sensing circuit determining whether the capacitive touch device is touched according to a voltage of the first input-output pin and a voltage of the second input-output pin;
• and
• a display controller providing a first driving signal to the display device via the first input-output pin and providing a second driving signal to the display device via the second input-output pin in a display period,
• wherein:
• in a first sensing period, the sensing circuit sets the voltage level of the first input-output pin to a first predetermined level and detects the voltage of the second input-output pin.