| 摘要 |
PURPOSE: A semiconductor device is provided to prevent output data from being distorted by outputting data at high speed with reliability. CONSTITUTION: A semiconductor device comprises an impedance control circuit(100), a PVT(Pressure, Volume, Temperature) sensing control circuit(200), a pull-up unit(310), and a pull-down unit(320). The pull-up unit and the pull down unit constitute a data output stage(300). The impedance control circuit peforms a ZQ calibration operation. The pull-up unit pulls up an output terminal for the output data of a high level by receiving data signal. The pull down unit pulls down the output terminal for the output data of a low level. A PVT sensing control circuit outputs a control signal to the pull-up unit and the pull down unit.
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