| 摘要 |
PROBLEM TO BE SOLVED: To normally perform data writing to a memory cell even when data can not be written in the memory cell within a column selection period of a column selection signal. SOLUTION: A semiconductor memory device is provided with a WCSL timer 10 generating a writing control signal WCSL maintaining a high level for a prescribed period even if the level of a column selection line CSL is made low. When the selection period of the column selection line CSL is shorter than the time required for data writing of an FBC21, the writing control signal WCSL is maintained in an active state (a high level) during a prescribed period after the column selection line CSL is made to be in a non-selection state. Thereby, data writing to the FBC21 can be normally performed even when time is required for data writing of the FBC21. COPYRIGHT: (C)2006,JPO&NCIPI
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