| 摘要 |
The semiconductor device includes a capacitance element connected to a first power-supply line via a first switch element, and to a second power-supply line via a second switch element; and a control circuit that controls the first and second switch elements. The control circuit turns the first switch element ON during a first period (voltage is supplied only to the first power-supply line), while turning the second switch element ON during a second period (voltage is supplied to both the first and second power-supply lines).
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