PWM SIGNAL GENERATOR AND PWM SIGNAL GENERATING METHOD, MOTOR CONTROLLER AND MOTOR CONTROLLING METHOD

摘要

PPROBLEM TO BE SOLVED: To provide a high-resolution PWM signal generator and a PWM signal generating method, and high-accuracy motor controller and a motor controlling method. PSOLUTION: The PWM signal generator of the invention is provided with a counter 61, a comparing register 62, a comparator 63 for comparing a comparison value in the comparing register 62 with a count value in the counter 61 and outputting a matching signal 67, a PWM signal generating circuit 80 for determining a pulse width of a PWM signal based on the matching signal 67, and an additional bit register 16 for holding an additional bit provided for changing the pulse width of the PWM signal. PCOPYRIGHT: (C)2007,JPO&INPIT