SEMICONDUCTOR MEMORY

PROBLEM TO BE SOLVED: To provide a semiconductor memory in which efficient error correction can be performed and which has high reliability of read-write. SOLUTION: The semiconductor memory 1 has a memory part 2 and an error correction part 10, the error correction part 10 has a plurality of error correction circuits 11, 12 using correction codes of different systems, a recognition selecting circuit 14 recognizing occurrence tendency of errors detected by the error correction circuits 11, 12 and selecting one error correction circuit used for error correction from a plurality of error correction circuits 11, 12, a switching circuit 13 switching to the selected error correction circuit, and a memory circuit 15 storing information of the selected error correction circuit. COPYRIGHT: (C)2009,JPO&INPIT