OSCILLATION CIRCUIT AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE INCLUDING THE SAME
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United States of America Patent
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Issued Date -
Aug 27, 2015
app pub date -
Jan 22, 2015
filing date -
Feb 21, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
When an external clock signal exceeding a power supply voltage is input to a first terminal, a voltage of a bulk of a P type MOS transistor becomes higher than a power supply voltage, but a current does not flow from the bulk of the P type MOS transistor to a first power supply line since a first diode is provided in a forward direction with respect to a direction of a current flowing from a first power supply line to the bulk of the P type MOS transistor. Therefore, it is possible to reliably prevent a reverse current from flowing from the first terminal to the first power supply line.
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