Virage Logic Corporation

Izak Kense

Alexander Shubat

Niranjan Behera

Deepak Sabharwal

Methods and apparatuses in which a ROM memory array has virtual-grounded source lines programmed in layer physically higher than the diffusion layer. The ROM memory array may include a diffusion layer, one or more virtual-grounded source lines, and one or more bit lines. At least one of the virtual-grounded source lines is programmed with a layer physically higher than the diffusion layer.

Methods and apparatuses for a ROM memory array having a virtually grounded line

A method, system, and apparatus exist which couple a first group of non-redundant memory columns to a non-redundant input-output circuit and couple a second group of redundant memory columns to a redundant input-output circuit. A fewer amount of memory columns exist in the second group of redundant memory columns than in the first of non-redundant memory columns. A first fuse indicates whether one or more memory columns are defective in a group of non-redundant memory columns coupled to the non-redundant input output circuit. Also, a second fuse couples to a first circuit. The first circuit identifies which sub-input circuit is coupled to the one or more defective memory columns.

Method and apparatus to reduce the amount of redundant memory column and fuses associated with a memory device

A method, system, and apparatus exist which couple a first group of non-redundant memory columns to a non-redundant input-output circuit and couple a second group of redundant memory columns to a redundant input-output circuit. A fewer amount of memory columns exist in the second group of redundant memory columns than in the first group of non-redundant memory columns. A first fuse indicates whether one or more memory columns are defective in a group of non-redundant memory columns coupled to the non-redundant input output circuit. Also, a second fuse couples to a first circuit. The first circuit identifies which sub-input-output circuit is coupled to the one or more defective memory columns.

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Fremont, CA, United States of America

Izak Kense