Semiconductor memory device having n bit prefetch type and method for transferring data thereof

The present invention pre-charging the bit-free N N data group of only one-half the power supply voltage predetermined global input bus for receiving at least one data group to be the first output of which is pre-fetch the fetch scheme from an array of memory cells thereby it relates to the output speed of the at least one data group of the semiconductor memory device faster than the other groups of data to be output first. A semiconductor memory device according to the invention is of the N-bit free to fetch scheme prefetch N data groups of the first predetermined data bus for receiving at least one data group to be output to the outside of which is from the array of memory cells N using the information to determine the output order of the data groups comprises a data bus controller by placing the pre-charging. Prefetching, pre-charging, the global output bus, the column address