SEMICONDUCTOR MEMORY DEVICE AND MEMORY SYSTEM INCLUDING THE SAME

摘要

A semiconductor memory device includes: a memory cell array, and a data inversion circuit. The data inversion circuit receives first and second unit data stored in the memory cell array through first data lines different from each other. In addition, during the first unit data is transmitted to an input and output buffer through a second data line, the data inversion circuit transmits the input and output buffer through the second data line by determining whether the second unit data is reversed or not based on the number of toggling of responding bits in the first unit data and second unit data.