Disclosed is a semiconductor device including a circuit information supply unit that supplies circuit information acquired from an outside of the semiconductor device; circuit configuration units that configure respective circuits based on the circuit information supplied from the circuit information supply unit; a specification unit that specifies whether to execute circuit configuration with respect to the circuit configuration unit; and a signal fixation unit that fixes values of signals outputted from the circuit configuration units to a designated value during a period at which the specified circuit configuration unit configures corresponding circuits based on the circuit information.