| 摘要 |
PROBLEM TO BE SOLVED: To make a microcomputer with small number of input ports usable in the drive controller of a motor, and to facilitate capturing of an external signal for the microcomputer.SOLUTION: A drive controller 1 of a motor 20 includes a motor drive unit 9, a microcomputer 4, and a current blocking circuit 6. The motor drive unit 9 drives the motor 20 based on a drive control signal S1, and outputs an FG signal S3 of the motor 20. An input port PIN of the microcomputer 4 is used for both capturing of a write setting signal Sr (first external signal), and capturing of the FG signal S3 (drive information). The current blocking circuit 6 is connected between the input port PIN and the output terminal PFG of the FG signal S3, and prevents the current of the write setting signal Sr from flowing into the output terminal PFG, and transmits the FG signal S3 to the input port PIN. |
