| 摘要 |
PROBLEM TO BE SOLVED: To provide a microcomputer capable of stopping the operation of an actuator by passing input of a stop signal even during clock stop.SOLUTION: The microcomputer comprises: a processor; a drive control signal generation unit for an actuator; a noise filter unit including a digital noise filter which operates based on a clock, and an analog noise filter which operates without based on the clock, for passing an operation stop signal for the actuator while canceling a noise signal; a stop circuit for bringing a drive control signal into a stopped state in accordance with a stop signal; a clock monitoring circuit for detecting the stop of the clock; and a noise filter selection circuit which selects the digital noise filter while the clock monitoring circuit does not detect the stop of the clock, and switches the selection from the digital noise filter to the analog noise filter, without depending on control by the processor, in response to the detection of the clock stop by the clock monitoring circuit. |
