MEMORY DEVICE USING FLASH MEMORY AND ITS ERROR RECOVERY METHOD, ESPECIALLY STORING LOGICAL BLOCK ADDRESS OF DATA AT SPARE AREA OF SECTORS

摘要

PURPOSE: A memory device using a flash memory and its error recovery method are provided to recover an error of the system when there is an error during data updating as to a meta data area of the flash memory. CONSTITUTION: A buffer(24) stores data temporarily to be stored in a flash memory(22) and data to be output to the external. A block mapping table(26) stores mapping information of a logical block address of data to be stored in the flash memory and a physical block address of the flash memory. And a memory control unit(28) controls data read and write as to the flash memory according to the mapping information of the block mapping table, and writes data to be updated and a logical block number corresponding to the second block into the second block by allocating the second block while updating the first block of the flash memory.