| 摘要 |
A semiconductor memory device is able to inactivate an on-die termination circuit without an additional pin. The semiconductor memory device includes a control signal generator, a resistance control unit, and a resistance supply unit. The control signal generator generates an initializing signal and driving clocks in response to a plurality of control signals. The resistance control unit, initialized by the initializing signal, generates a termination-off signal in response to the driving clocks. The resistance supply unit supplies termination resistance in response to the termination-off signal and a mode register setting value. The plurality of control signals are inputted through input pins not connected to the resistance supply unit.
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