| 摘要 |
<p>PURPOSE:To realize the stop state of an arithmetic part by simple circuit constitution and control by supervising an arithmetic part stop request and indicating a clocking generating part to stop the generation of a clock supplied to the arithmetic part at the time of occurring the arithmetic part stop request. CONSTITUTION:An arithmetic part stop deciding part 14 is provided, and the arithmetic part stop request is supervised by this part 14; and when the arithmetic part stop request occurs, a clock generating part 13 is indicated to stop the generation of a clock KA supplied to an arithmetic part 10, and the arithmetic part 10 is set to the stop state. As the result, it is sufficient if the arithmetic part 10 has three kinds of transition state of operation, input, and output. Thus, the circuit to control the transition state of the arithmetic part 10 is simplified, and the control is simplified.</p> |
