| 摘要 |
<p>PURPOSE:To prevent a system from malfunctioning if the delay time of a delay circuit varies. CONSTITUTION:A timing generator 13 inputs the output of an oscillation circuit 11 and the output of the oscillation circuit 11 which is delayed by the delay circuit 12 and outputs a system clock. A counter A14 counts the output of the oscillation circuit 11. A counter B15 is controlled with the output of the counter A14 to count the output of the timing generator 13. A reset circuit 16 outputs a reset signal corresponding to the output of the counter B15. A delay time control circuit 18 controls the delay time of the delay circuit 12 according to the output of the counter B15 and the output of the timing generator 13.</p> |
