A control circuit includes: a cycle counter configured to measure a cycle of revolutions per minute (RPM) signal indicating an RPM of a motor to be driven to generate a digital measurement value; and a controller configured to generate a control command based on a digital target value corresponding to a target cycle of the RPM signal and the measurement value, wherein the controller switches between a first mode in which the control command is monotonously changed and a second mode in which the control command is generated based on proportional-integral (PI) control.