| 摘要 |
<p>A reset signal generating circuit has a voltage dividing circuit (11) for dividing a power source voltage into a divided voltage, a first switching part (12) controlled responsive to the divided voltage from the voltage dividing circuit and turned ON when the power source voltage rises to a value in a vicinity of a predetermined value with an arbitrary rising speed, a second switching part (13) controlled responsive to an output signal of the first switching part and turned ON during a time in which the first switching part is ON, and a charging and discharging part (14, 15) including a capacitor supplied with an output signal of the second switching part for starting a charging operation from a first time when the second switching part turns ON. The charging and discharging part outputs a reset signal for a constant time from the first time to a second time and stops to output the reset signal after the second time.</p> |
