Patent ID: 7068006

Claim:
A stepping motor control circuit comprising: a switching width memory configured to divide a driving process of a stepping motor into a plurality of driving states, and to store switching widths of an excitation pulse that are set for the divided driving states; a switching count memory configured to store switching counts of the excitation pulse that are set for the divided driving states; a pattern data memory configured to store a plurality of pattern data of the excitation pulse; a counter configured to perform a counting operation based on a clock signal of a predetermined cycle; a switching unit configured to perform a switching operation based on a count value obtained by the counting operation of the counter in response to a driving start instruction and in accordance with the switching widths stored in the switching width memory and the switching counts stored in the switching count memory; a selector configured to sequentially select the pattern data stored in the pattern data memory in synchronism with the switching operation of the switching unit; and an output unit configured to output the excitation pulse to the stepping motor in accordance with the pattern data selected by the selector.