SEMICONDUCTOR MEMORY DEVICE WITH FUNCTION FOR GENERATING ADJACENT ROW ADDRESSES

摘要

According to the present invention, a semiconductor memory device includes a memory cell array which includes a normal memory cell array and spare memory cell array comprising volatile memory cells. Also, the semiconductor memory device includes: an adjacent row address generator which generates row addresses of word-lines physically adjacent to a specific word-line using a concentrated row address when the particular word-line is concentrically accessed by applying the concentrated row address to precisely care the memory cells connected to the word-lines physically adjacent to the specific word-line to prevent the attributes of data retention from degrading when the address accessing to the specific word-lines of the semiconductor memory cell array is concentrically occurring.