| 摘要 |
<p>PURPOSE:To advance an oscillation starting time by applying a system reset except an oscillation circuit by the deciding result of a power source voltage deciding circuit. CONSTITUTION:When a power source voltage 11 rises, a system reset signal is generated until it reaches a voltage value set beforehand by a voltage detecting circuit built in a system reset generating circuit 3, and after that, when the voltage rises above it, the system reset is canceled and a controller starts a normal operation. Here, the reset is not inputted to the oscillation circuit and therefore, it starts to oscillate the the voltage lower than a voltage detection level. Thus, the oscillation starting time when the power source rises can be advanced.</p> |
