Semiconductor memory device having flexible column...

Static information storage and retrieval – Floating gate – Particular connection

Reexamination Certificate

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C365S225700

Reexamination Certificate

active

06967868

ABSTRACT:
A flash memory device may include: a plurality of main bit lines; a plurality of redundant bit lines; a plurality of first page buffers respectively organized as a plurality of first page buffer groups which are connected to main bit lines; a plurality of second page buffers respectively organized as a plurality of second page buffer groups which are connected to the redundant bit lines; each of the first and second page buffers including an output P/F terminal to provide pass/fail data; a plurality of fuses corresponding to the pluralities of the first and second page buffer groups, respectively, each of the fuses having one end commonly connected to the P/F terminals in a corresponding page buffer group and the other end connected to a signal line; and a pass/fail check circuit to determine an overall pass/fail signal based upon a signal on the signal line.

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