초록 ▼

A memory array formed on a single chip is provided with at least one redundant column (or row) of memory cells in addition to “standard”number of columns and rows where the spare column (or row) of cells is designed to be substituted for a standard column (or row) found to have defective cells. Prog

A memory array formed on a single chip is provided with at least one redundant column (or row) of memory cells in addition to “standard”number of columns and rows where the spare column (or row) of cells is designed to be substituted for a standard column (or row) found to have defective cells. Programmable non-volatile electrically alterable elements are connected to the column (or rows) conductors of the standard and redundant columns (or rows) of cells for selectively disconnecting from the memory circuit a standard column (or rows) containing defective cells and substituting therefor a redundant column (or row) of cells.

대표청구항 ▼

A monolithic integrated circuit comprising: a standard memory array of cells arranged in rows and columns, with a row conductor per row of cells and a column conductor per column of cells; a row decoder and a column decoder; means coupling the row decoder to the row conductors; a plurality of progra

A monolithic integrated circuit comprising: a standard memory array of cells arranged in rows and columns, with a row conductor per row of cells and a column conductor per column of cells; a row decoder and a column decoder; means coupling the row decoder to the row conductors; a plurality of programmable non-volatile electrically alterable elements, each one of said elements having a main conduction path and a control electrode; a first set of said non-volatile electrically alterable elements having their main conduction paths connected between the column decoder and the column conductors; a spare column of cells having the same number of rows as said standard array; and a second set of said non-volatile electrically alterable elements having their main conduction paths connected between said column decoder and said spare column.