Method and apparatus of column redundancy for non-volatile...

Details Method and apparatus of column redundancy for non-volatile... Method and apparatus of column redundancy for non-volatile...

G - Physics

11

C

G11C 29/00 (2006.01) G11C 11/34 (2006.01) G11C 11/56 (2006.01) G11C 27/00 (2006.01)

Patent

CA 2257740

This invention provides column redundancy circuits in a storage array, which circuits are used in a non-volatile memory chip to increase the production yield due to manufacturing defects. The invention includes a scheme to latch and transfer the redundancy information, a redundancy logic circuit, a redundancy column driver, an array architecture with column redundancy, a scheme to program and read the column redundancy memory cells, a scheme to multiplex the fuses, and circuits to use an out-of-bound address as a column redundancy enable/disable signal.

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