Method for repairing a neighborhood of rows in a memory array using a patch table
First Claim
1. A method for writing data in a repair area of a memory device, the method comprising:
- storing, in a temporary storage area of a memory device;
(i) first data to be stored in row N in a memory array of the memory device, (ii) second data, if any, stored in row N−
1 in the memory array, and (iii) third data, if any, stored in row N+1 in the memory array;
writing the first data in row N in the memory array; and
in response to an error in writing the first data in row N in the memory array;
writing the first data, the second data, if any, and the third data, if any, in respective rows in a repair area in the memory device; and
adding addresses of rows N−
1, N, and N+1 to a table stored in the memory device,wherein the table indicates which rows in the repair area should be used instead of rows N−
1, N, and N+1;
wherein the first data, the second data, if any, and the third data, if any, are written in respective rows in the repair area such that there are intervening blank rows between the respective rows.
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Accused Products
Abstract
A method for repairing a neighborhood of rows in a memory array using a patch table is disclosed. First data to be stored in row N in a memory array of the memory device, second data, if any, stored in row N−1 in the memory array, and third data, if any, stored in row N+1 in the memory array are stored in a temporary storage area of a memory device. The first data is written in row N, and, in response to an error, the first data, the second data, if any, and the third data, if any, are written in respective rows in a repair area in the memory device. The addresses of rows N−1, N, and N+1 are added to a table stored in the memory device to indicate which rows in the repair area should be used instead of rows N−1, N, and N+1.
103 Citations
16 Claims
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1. A method for writing data in a repair area of a memory device, the method comprising:
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storing, in a temporary storage area of a memory device;
(i) first data to be stored in row N in a memory array of the memory device, (ii) second data, if any, stored in row N−
1 in the memory array, and (iii) third data, if any, stored in row N+1 in the memory array;writing the first data in row N in the memory array; and in response to an error in writing the first data in row N in the memory array; writing the first data, the second data, if any, and the third data, if any, in respective rows in a repair area in the memory device; and adding addresses of rows N−
1, N, and N+1 to a table stored in the memory device,wherein the table indicates which rows in the repair area should be used instead of rows N−
1, N, and N+1;wherein the first data, the second data, if any, and the third data, if any, are written in respective rows in the repair area such that there are intervening blank rows between the respective rows. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for writing data in a repair area of a memory device, the method comprising:
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receiving an address of row N in a memory array of a memory device; determining whether the address of row N is present in a table stored in the memory device; if the address of row N is present in the table, remapping the address to an address in a repair area of the memory device; if the address of row N is not present in the table; storing, in a temporary storage area of the memory device;
(i) first data to be stored in row N in the memory array (ii) second data, if any, stored in row N−
1 in the memory array, and (iii) third data, if any, stored in row N+1 in the memory array;writing the first data in row N in the memory array; and in response to an error in writing the first data in row N in the memory array; writing the first data, the second data, if any, and the third data, if any, in respective rows in a repair area in the memory device; and adding addresses of rows N−
1, N, and N+1 to the table, wherein the table indicates which rows in the repair area should be used instead of rows N−
1, N, and N+1;wherein the first data, the second data, if any, and the third data, if any, are written in respective rows in the repair area such that there are intervening blank rows between the respective rows. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification