STEPPING MOTOR CONTROL CIRCUIT AND ANALOG ELECTRONIC TIMEPIECE

PROBLEM TO BE SOLVED: To prevent a rotation stop and reduce an energy consumption by driving a stepping motor with a main driving pulse depending on a voltage of a secondary battery and a rotational condition of the stepping motor.SOLUTION: Control means is provided to drive a stepping motor 108 in a first mode in which a driving pulse depending on a rotational condition of the stepping motor 108 is selected from one kind of main driving pulse and a corrective driving pulse having greater energy than the main driving pulse to drive the stepping motor 108 or a second mode in which a driving pulse depending on a rotational condition of the stepping motor 108 is selected from a plurality of kinds of main driving pulse and a corrective driving pulse having greater energy than the plural kinds of main driving pulse to drive the stepping motor 108. The control means drives the stepping motor 108 by switching between the first mode and the second mode in accordance with whether or not a voltage of a secondary battery 113 as a power supply exceeds a switching voltage.