| 摘要 |
<p>PURPOSE:To prevent a microcomputer from continuing to be reset by discharging the charge of the capacitor for resetting through a diode inserted in a forward direction. CONSTITUTION:When an output terminal OUT of a counter 3 becomes a low level after a microcomputer 1 is reset by the ON of a transistor 4, the transistor 4 is turned off, and therefore, the charging to the capacitor 2 is executed through the pull-up resistance of a microcomputer. At such a time, the charging starting terminal voltage of the capacitor 2 becomes the forward direction voltage (about 0.4V) of a diode 10, the rise of the terminal voltage of the capacitor 2 is made quicker only for the forward direction voltage, the voltage rises up to about 2V within 250mn, the resetting of the microcomputer 1 is released and the execution of the program is started again.</p> |
