Semiconductor memory storage device and a redundancy control...

Details Semiconductor memory storage device and a redundancy control... Semiconductor memory storage device and a redundancy control...

2006-06-27

2006-06-27

Dinh, Son T. (Department: 2824)

Static information storage and retrieval

Read/write circuit

Bad bit

C365S189090

Reexamination Certificate

active

07068555

ABSTRACT:
An address identifying memory block is match-compared with address information stored in a to-be-remedied block memory section in a block redundancy judge section. A redundant block select signal is outputted from the block redundancy judge section by judgment of address match. A memory block column select section selects a memory block column having a redundant memory block irrespective of an address signal as the redundant block select signal is activated if block redundancy is activated to output a memory block column select signal. A column redundancy memory section selects address information of column redundancy relating a redundant memory block arranged in a memory block column in accordance with the memory block column select signal.

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