| 摘要 |
The invention provides a stepping motor control circuit including a rotation detecting circuit configured to detect an induced signal generated according to the state of rotation of a stepping motor, and a control unit configured to select any one of a plurality of drive pulses having different energy from each other according to the result of detection detected by the rotation detecting circuit and controls the drive of the stepping motor alternately with the selected drive pulses having different polarities from each other, wherein if the difference of detected time points of the induced signals generated when driving the stepping motor with the drive pulses having the same energy and different polarities is not shorter than a predetermined time, the control unit changes the drive pulse to a drive pulse having a larger energy than that of the above-described drive pulse and drives the stepping motor.
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