Stepping motor control circuit and analogue electronic watch

A stepping motor control circuit comprising:

• a rotation detecting unit configured to detect an induced signal generated by a rotation of a rotor of a stepping motor and detect whether or not the induced signal exceeds a predetermined reference threshold voltage within predetermined detecting period;
• and a control unit configured to perform a pulse drive control for controlling the driving of the stepping motor with one of a plurality of main driving pulses different in energy from each other or a corrective driving pulse having larger energy than the respective main driving pulse according to the result of detection by the rotation detecting unit, wherein
• the detecting period is divided into a first segment for detecting the induced signal generated in at least a second quadrant by the rotation of the rotor immediately after the driving of the main driving pulse, a second segment being provided after the first segment for detecting the induced signal in a third quadrant, and a third segment being provided after the second segment, and
• when the rotation detecting unit does not detect the induced signal exceeding the reference threshold voltage in the second segment at the time of rotational driving by the main driving pulse having the maximum energy, the control unit drives the stepping motor with a predetermined fixed main driving pulse having energy not smaller than the maximum energy.