| 摘要 |
A threshold voltage control circuit includes a first voltage supplying unit for supplying a first power supply voltage, in response to an enable signal which is activated when a bank is enabled, as a back bias voltage of a first MOS transistor, wherein the first MOS transistor drives an internal voltage, and a second voltage supplying unit for supplying a second power supply voltage, in response to the enable signal, as the back bias voltage of the first MOS transistor.
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