| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve a problem that, if a power supply of a circuit necessary to control a switch for switching a path is provided after wakeup, or if a buckle switch is switched while a microcomputer is asleep, the electrical current necessary for the reliable operation of the buckle switch cannot be supplied during sleep, so that the buckle switch will not operate normally, creating the possibility that wakeup cannot be performed. <P>SOLUTION: In order to ensure the electrical current necessary for the reliable operation of the buckle switch if the buckle switch is switched while the microcomputer is asleep, a resistor connected with an FET capable of being kept ON or OFF by the power supply acting during sleep and a resistor of large resistance for blocking any excessive dark current even when the buckle switch is connected thereto are arranged in parallel to each other. The combined resistance of the parallel combination of these elements is used as a pull-up resistance at the input of a control unit. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
