| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a microcomputer capable of releasing a stop condition only by a hardware without intervening a software factor to prevent a dead lock condition. SOLUTION: A wake-up signal 21 is constantly inputted from the external at a constant period. A clock control circuit 12 receives the wake-up signal 21 through a wake-up terminal 11. In the normal running condition, the clock control circuit 12 ignores the inputted wake-up signal 21 for not giving the influence on its operating condition. When the wake-up signal 21 is inputted to the clock control circuit 12 in a stop condition, the clock control circuit 12 forcibly releases an oscillation stop signal 26 supplied to an oscillating circuit 13. When the oscillation stop signal 26 is released, the oscillating circuit 13 restarts its oscillation.</p> |
