The subject in the past is that there are a large number of data wirings in a semiconductor device including multiple memory cell arrays and that the area occupied by the data wirings is large. In a selected memory cell array among multiple memory cell arrays, a data wiring functions as a local wiring that transmits the data of the selected memory cell. In a memory cell array that is not selected among the memory cell arrays and is located between a data circuit and the selected memory cell array, the data wiring functions as a global wiring that transmits the data of a memory cell of the selected memory cell array.