Redundancy selector circuit for use in non-volatile memory...

Static information storage and retrieval – Read/write circuit – Bad bit

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C365S189050, C365S189070

Reexamination Certificate

active

11444353

ABSTRACT:
A redundancy selector circuit for use in a non-volatile memory device include a ROM cell array, in which defective addresses are stored, including a plurality of ROM cells arranged in a matrix of rows and columns; a ROM controller for sequentially selecting rows of the ROM cell array at power-up; a sense amplifier block for sensing and amplifying data bits from ROM cells of the respective rows selected sequentially according to the control of the ROM controller; a latch block for receiving data bits sensed by the sense amplifier block through a switch circuit and latching the input data bits as a defective address; and a comparator block for detecting whether an address input in a normal operation matches one of the defective addresses stored in the latch block. As the rows are sequentially selected, the defective addresses of the ROM cell array are transferred to the latch block through the sense amplifier block by means of serial transfer.

REFERENCES:
patent: 5206831 (1993-04-01), Wakamatsu
patent: 6426910 (2002-07-01), Santin
patent: 6532181 (2003-03-01), Saito et al.
patent: 2002/0012282 (2002-01-01), Saito et al.
patent: 2004-515868 (2004-05-01), None
patent: 2004-246958 (2004-09-01), None
patent: 10-1999-0080912 (1999-11-01), None
patent: 10-20030024921 (2003-03-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Redundancy selector circuit for use in non-volatile memory... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Redundancy selector circuit for use in non-volatile memory..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Redundancy selector circuit for use in non-volatile memory... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3925643

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.