Semiconductor memory device having the same skew in whole memory core

The present invention discloses a semiconductor memory device having the same skew in the whole area of ​​the memory core. The device includes a memory core, and arranged to provided to the data input and output lines are connected via the memory core to the data input circuit and the data output circuit a data input circuit and a data output circuit that is disposed separately on the upper and lower sides of the memory core is, row and column control signal lines from the outside of the memory core from one end of the data input circuit according to a univariate of the memory core and arranged in the same direction as the data input and output lines, wherein the inside of the memory core It characterized in that from one end disposed in the direction perpendicular to the data input and output lines. Therefore, when the input or output data from the memory core, so that the same skew in the whole area of ​​the memory core is present, needs very little leave a margin between the signal to input or output the data from the memory core. Moreover, according to the semiconductor memory device according to the present invention, it is possible to design a memory core that has a faster operating speed.