Patent ID: 6377513
Filing Date: 2002-04-23
Classification: G11C

Abstract:
A method for writing data to a semiconductor memory device, wherein the semiconductor memory device includes a plurality of bit lines connected to a common data line by a plurality of column gates, a plurality of column selection lines for controlling the opening and closing of the column gates, a plurality of words lines, and a plurality of memory cells connected to the plurality of bit lines and the plurality of word lines, the method comprising the steps of:selecting one of the plurality of word lines; and simultaneously activating the plurality of column gates with the plurality of column selection lines, wherein data of the common data line is written to the plurality of memory cells connected to the selected word line via the plurality of column gates at once, and wherein during the step of simultaneously activating the plurality of column gates, the plurality of column selection lines are simultaneously selected at a timing that is earlier than a timing for selecting one of the plurality of column selection lines in a normal write operation.