| 摘要 |
PURPOSE:To reduce the load on a software by staring-up a motor while applying an overflow flag directly to a driving circuit without passing a CPU. CONSTITUTION:The stat-up from a state where the motor is stopped is performed with the overflow flag generated from an overflow flag generating circuit 9 by triggering the circuit 9 by a timer 8 when a free-running counter 1 exceeds a prescribed count value. In this case, the overflow flag is applied to the output terminal 12 of an IC 13 via an OR circuit 10. The overflow flag is applied to the motor driving circuit 5 through a smoothing circuit 11 to move the motor 6. Thus, the program for the start-up is unnecessitated in the CPU 3 and the need to see the input of a start-up signal is eliminated. |
