Nonvolatile semiconductor storing device and block...

Details Nonvolatile semiconductor storing device and block... Nonvolatile semiconductor storing device and block...

2005-02-09

2008-12-02

Elms, Richard (Department: 2824)

Static information storage and retrieval

Read/write circuit

Bad bit

C365S201000, C365S230030, C365S185090

Reexamination Certificate

active

07460419

ABSTRACT:
A nonvolatile semiconductor storing device according to the present invention comprises a block replacing means for replacing a defective block with a redundant block when a memory block in a memory array is the defective block. The block replacing means includes an address translation circuit10for converting an inputted external block address into an internal block address by inverting an address bit corresponding to dissident of each address bit between a defective block address of the defective block and a redundant block address among address bits of the inputted external block address, and each of the memory blocks5is selected based on the internal block address after the translation of the external block address inputted from outside by the address translation circuit10.

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