| 摘要 |
PURPOSE: A semiconductor device is provided to control the driving of a pre-emphasis according to the change of a PVT(Process, Voltage, and Temperature) by performing a pre-emphasis operation using a pre-emphasis code. CONSTITUTION: A code generating unit(240) generates a pre-emphasis code controlled by corresponding to the change of an impedance code. A main driving unit(210) drives a data output pad by receiving output data and controls driving power in response to the impedance code. A sub driving unit(220) drives the data output pad by receiving the output pad and controls driving power in response to the pre-emphasis code. [Reference numerals] (210) Main driving unit; (220) Sub driving unit; (230) Driving control signal generating unit; (240) Code generating unit;
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