Provided is a periodic signal generation circuit including: a clock generation unit suitable for generating first to Nth clocks which have a basic period and have a phase increasing sequentially by a time interval obtained by dividing the basic period by “N”; a pulse generation unit suitable for generating first to Nth periodic pulses having an equal pulse width and having a phase increasing sequentially by a time interval obtained by dividing the basic period by “N” by combining two or more clocks among the first to Nth clocks; and a periodic signal generation unit suitable for generating a periodic signal by combining one or more periodic pulses among the first to Nth periodic pulses depending on combination information.