Patent ID: 6119245
Filing Date: 2000-09-12
Classification: G06F,G11C

Abstract:
A semiconductor storage device comprising:a storage section comprising a plurality of memory elements having a plurality of sectors that are used as ordinary sectors and spare sectors, wherein said memory elements are accessed in accordance with a first memory number indicated in a first address information;an input section for inputting an externally received second address information which indicates a second memory number;an address conversion table for storing conversion information which indicates a relationship between said first memory numbers and said second memory numbers, and for converting said second address information into said first address information by using said conversion information;a control section for performing writing/reading of data to said memory elements in accordance with said first memory number indicated in said first address information obtained by said address conversion table;a data error information management table for storing error data indicative of an occurrence of write/read errors of said memory elements; anda deterioration detection section for detecting a deterioration of said memory elements in accordance with said error data stored in said data error information management table, and for rewriting a first memory number of said address conversion table such that a memory element that is detected as being deteriorated by said deterioration detection section is not used.