Integrated circuit self-repair method and integrated circuit thereof

An integrated circuit, comprising:

• a setting circuit configured to generate a transmission protocol that has at least one predetermined logic state;
• at least one main register electrically connected to the setting circuit, to receive the predetermined logic state according to the transmission protocol;
• at least one protection circuit electrically connected to the main register and the setting circuit, the protection circuit comprises at least three registers, the main register sets the at least three registers to the predetermined logic state, and the protection circuit outputs the predetermined logic state;
• and
• a controlled circuit configured to perform a function according to the predetermined logic state, wherein
• when a minority of the at least three registers are changed to an opposite logic state due to an emergency occurring at an input power source, the protection circuit outputs the predetermined logic state according to the predetermined logic state of the remaining registers, and transmits the predetermined logic state back to the register that is in the opposite logic state, to correct the opposite logic state to the predetermined logic state.