| 摘要 |
<p>PURPOSE:To perform both operations of a reload timer and arbitrary duty factor clock generation by attaching the function of a reload timer circuit and that of an arbitrary duty factor clock generation circuit on a clock generation circuit. CONSTITUTION:A data register 1 writes the data of preset count value at every bit, and holds and outputs it, and also, a counter 2 performs a counter operation at every input of a count clock CL0. A comparator 3 compares the preset count value in the data register 1 with the count value of the counter 2, and outputs a coincidence signal F when coincidence is obtained between them, and a full- count detection circuit 4 outputs a full-count signal E when the count value of the counter 2 overflows. A reset circuit 5 resets the count value of the counter 2 at every output of the coincidence signal F in the operation of the reload timer, and at every output of the full-count signal E in the operation of the duty factor clock generation.</p> |
