STEPPING MOTOR CONTROL CIRCUIT, SEMICONDUCTOR DEVICE, AND ANALOG ELECTRONIC TIMEPIECE

摘要

A stepping motor control circuit includes a drive pulse generation section that generates forward-rotation drive pulses that drive a stepping motor stepwise in a forward rotation direction and reverse-rotation drive pulses that drive the stepping motor stepwise in a reverse rotation direction and a forward/reverse rotation switching control section that switches the drive pulses outputted to the stepping motor from one of the forward-rotation drive pulses and the reverse-rotation drive pulses to the other, and the forward/reverse rotation switching control section switches the drive pulses outputted to the stepping motor from one of the forward-rotation drive pulses and the reverse-rotation drive pulses to the other and then provide a predetermined period before the other drive pulses are outputted to the stepping motor.

主权项

1. A stepping motor control circuit that controls a stepping motor driven stepwise in a forward rotation direction or a reverse rotation direction based on inputted drive pulses, the control circuit comprising:
a drive pulse generation section that generates, as the drive pulses, forward-rotation drive pulses that drive the stepping motor stepwise in the forward rotation direction and reverse-rotation drive pulses that drive the stepping motor stepwise in the reverse rotation direction; and a forward/reverse rotation switching control section that switches the drive pulses outputted to the stepping motor from one of the forward-rotation drive pulses and the reverse-rotation drive pulses to the other, wherein the forward/reverse rotation switching control section switches the drive pulses outputted to the stepping motor from one of the forward-rotation drive pulses and the reverse-rotation drive pulses to the other and then provide a predetermined period before the other drive pulses are outputted to the stepping motor.