| 摘要 |
<p>PURPOSE:To prevent abnormal oscillation of an oscillation circuit and to improve the reliability by applying a power voltage given with a delay by a power supply time constant circuit to an oscillation circuit and obtaining a clock signal at the output side. CONSTITUTION:A logical circuit section 13 includes elements such as a set logical circuit 131 and a ready synchronizing circuit 132. In applying power to the logical circuit, since the effect of the leading speed of the supply voltage due to power ON is not almost given, the application of the power supply Vcc is branched from the input side of the power supply time constant circuit 11. The circuit 13 receives a clock signal from the oscillation circuit 12 and the power voltage Vcc, executes a prescribed logical operation and a clock generator outputs a signal such as a clock signal S(CL), a reset signal S(RST) and a ready signal S(RDY) from the output side.</p> |
