| 摘要 |
<p>PROBLEM TO BE SOLVED: To surely eliminate timing of disabling edge input in a microcomputer in which when an interrupt edge detecting part is left set, interruption is not enabled. SOLUTION: This microcomputer is set in the operating condition of detecting a system clock, and in the standby condition of stopping a system clock. The microcomputer is provided with an interrupt terminal for receiving an interrupt signal from the outside, an edge detecting part for detecting the edge of the interrupt signal to be set, and an interrupt flag latch for generating an interrupt request signal in response to setting of the edge detecting part, and outputting a clear signal to the edge detecting part. Before the microcomputer enters the standby state (step S18), the edge detecting part is cleared (step S12).</p> |
