Disabling faulty flash memory dies
First Claim
Patent Images
1. An article of manufacture comprising machine-readable instructions that, when executed by a computer, causes the computer to perform operations comprising:
- identifying at least one criterion for determining whether a flash memory die is defective;
identifying at least one defective flash memory die in a set of flash memory dies that provide a nominal initial capacity based on the at least one identified criterion;
selecting a level from among a plurality of levels at which a die disabling mechanism disables the at least one defective flash memory die, wherein the die disabling mechanism is configured to disable the at least one defective flash memory die at any of the plurality of levels; and
disabling the at least one defective flash memory die at the selected level to provide a flash memory system having an operational capacity that is less than the nominal initial capacity.
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Abstract
Articles and associated methods and systems relate to disabling defective flash memory dies in a device containing multiple flash memory dies. Packages containing multiple flash memory dies may be labeled to indicate a flash memory data storage capacity based on the flash memory dies that are not disabled. Various disabling methods may be applied at the die level, package level, and/or board level.
55 Citations
21 Claims
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1. An article of manufacture comprising machine-readable instructions that, when executed by a computer, causes the computer to perform operations comprising:
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identifying at least one criterion for determining whether a flash memory die is defective; identifying at least one defective flash memory die in a set of flash memory dies that provide a nominal initial capacity based on the at least one identified criterion; selecting a level from among a plurality of levels at which a die disabling mechanism disables the at least one defective flash memory die, wherein the die disabling mechanism is configured to disable the at least one defective flash memory die at any of the plurality of levels; and disabling the at least one defective flash memory die at the selected level to provide a flash memory system having an operational capacity that is less than the nominal initial capacity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system for identifying and disabling defective flash memory dies, the system comprising:
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a test controller device configured to identify, based on at least one criterion for determining whether a flash memory die is defective, at least one defective flash memory die in a set of flash memory dies that provide a nominal initial capacity, wherein the test controller is further configured to select a level from among a plurality of levels for disabling the at least one defective flash memory die; and die disabling means configured to disable the at least one defective flash memory die to provide a flash memory system having an operational capacity that is less than the nominal initial capacity, wherein the die disabling means is configured to disable the at least one defective flash memory die at the selected level. - View Dependent Claims (16, 17)
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18. A method for identifying and disabling defective flash memory dies, the method comprising:
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identifying at least one criterion for determining whether a flash memory die is defective; identifying at least one defective flash memory die in a set of flash memory dies that provide a nominal initial capacity based on the at least one identified criterion; selecting a level from among a plurality of levels of the flash memory system at which a die disabling mechanism disables the at least one defective flash memory die, wherein the die disabling mechanism is configured to disable the at least one defective flash memory die at any of the plurality of levels; and disabling the at least one defective flash memory die at the selected level to provide a flash memory system having an operational capacity that is less than the nominal initial capacity. - View Dependent Claims (19, 20, 21)
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Specification