Stacked device remapping and repair
Various embodiments include apparatus, systems, and methods having multiple dice arranged in a stack in which a defective cell may be replaced by a spare cell on the same die or a different die.
1. An apparatus comprising:
a first die including first cells;
a second die including second cells; and
a third die arranged in a stack with the first and second dice and configured to replace a defective cell among the first and second cells with a spare cell,
wherein among the first, second, and third dice, only the third die is configured to determine whether an incoming address matches an address of the defective cell.
2. The apparatus of claim 1 , wherein the defective cell is located at the first die and the spare cell is located at the second die.
3. The apparatus of claim 1 , wherein the defective cell is located at the first die and the spare cell is located at the third die.
4. The apparatus of claim 1 , wherein the spare cell and the defective cell are different cell types.
5. The apparatus of claim 1 , wherein the defective cell is located at the first die and the spare cell is located at the second die.
6. The apparatus of claim 1 , wherein the third die is configured to access the spare cell to perform one of writing data into the spare cell and reading data from the spare cell if an incoming address matches an address of the defective cell.
7. The apparatus of claim 1 , wherein the third die is configured to replace at least one additional defective cell among the first and second cells with at least one additional spare cell.
8. An apparatus comprising:
a first die including first cells;
a second die including second cells; and
a third die arranged in a stack with the first and second dice and configured to replace a defective cell among the first and second cells with a spare cell,
wherein among the first, second, and third dice, only the first and second dice are configured to determine whether an incoming address matches an address of the defective cell.
9. An apparatus comprising:
a first die including first cells;
a second die including second cells; and
a third die arranged in a stack with the first and second dice and configured to replace a defective cell among the first and second cells with a spare cell,
wherein among the first, second, and third dice, only the first and second dice are configured to access the spare cell to perform one of writing data into the spare cell and reading data from the spare cell if an incoming address matches an address of the defective cell.
10. An apparatus comprising:
a first die including first cells of a first cell type;
a second die including second cells of the first cell type; and
a third die arranged in a stack with the first and second dice and including third cells of a second cell type, the first die configured to replace a first defective cell among the first cells with one of the second and third cells and the second die configured to replace a second defective cell among the second cells with one of the first and third cells.
11. The apparatus of claim 10 , wherein the first cell type is dynamic random access memory cell type and the second cell type is a static random memory cell type.
12. The apparatus of claim 10 , wherein among the first, second, and third dice, only the first and second dice are configured to determine whether an incoming address matches an address of at least one of the first and second defective cells.
13. The apparatus of claim 12 , wherein among the first, second, and third dice, only the first and second dice are configured to access the third cells to perform one of writing data into at least one of the third cells and reading data from at least one of the third cells if the incoming address matches the address of the defective cell.
14. The apparatus of claim 13 further including at least one additional die in the stack.
15. A system comprising:
a processor; and
a memory device coupled to the processor, the memory device including:
a first die including first cells;
a second die including second cells; and
a third die arranged in a stack with the first and second dice and configured to replace a defective cell among the first and second cells with a spare cell,
wherein among the first, second, and third dice, only the third die is configured to determine whether an incoming address matches an address of the defective cell.
16. The system of claim 15 , wherein the defective cell is located at the first die and the spare cell is located at the second die.
17. The system of claim 15 , wherein the defective cell is located at the first die and the spare cell is located at the third die.