| 摘要 |
PROBLEM TO BE SOLVED: To achieve high reliability and long life of a semiconductor storage device that uses a nonvolatile semiconductor memory as a storage medium.SOLUTION: A semiconductor storage device stores management information that includes, for each block of a nonvolatile semiconductor memory, information indicating at least either one of a recent programming time that is a time when data is recently programmed in a block 202 and a recent erasure time that is a time when erasure processing is recently performed for the block. The semiconductor storage device controls a timing for programming data in the block on the basis of at least either one of the recent programming time and recent erasure time of the block; and/or controls a timing for performing erasure processing for the block on the basis of the recent programming time of the block. |
