Patent ID: 9231506
Filing Date: 2016-01-05
CPC Classification: H02P

Claim Text:
1. A semiconductor device comprising: a control data storage section that stores control signal data including a duty ratio for generating a pulse width modulation (PWM) signal for controlling operation of a drive section, and control data including an update cycle, an update value, and an update-times number of the duty ratio of the PWM signal; a control signal generation section that generates the PWM signal based on the control signal data; a storage control section that controls storage of control data in the control data storage section; and a notification section that notifies an updating timing of the control signal data to the control signal generation section based on the update cycle, wherein the control signal generation section updates the control signal data based on the update value included in the control data in response to the notification, and generates the PWM signal based on the updated control signal data, and wherein the control signal generation section repeats the update in response to the notification based on the update-times number.