ADDRESS BUFFER OF FLASH MEMORY

摘要

PROBLEM TO BE SOLVED: To provide an address buffer of a flash memory including a nonvolatile section selecting code cell which can select an arbitrary sector so that a normal sector can be utilized by making a memory sector in which defect occurs in a highly integrated core product a disable-state. SOLUTION: This address buffer of a flash memory is provided with a buffer section buffering an external address, a code storing section storing a code selecting a memory sector of a flash memory, and a setting section outputting internal addresses IA17 and IA18 selecting a memory sector by a code outputted from the code storing section and by a sector selecting address in the external address.