Disabling faulty flash memory dies
AssigneeApple Inc.
InventorsMichael Cornwell, Christopher Dudte
Life of this patent
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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.
Claims25
A method of operating a flash memory device having multiple flash memory dies, the method comprising:
- identifying one or more defective flash memory dies in a flash memory device;
- and
- disabling memory access operations to each identified die.
A flash memory device having multiple flash memory dies, the device comprising:
- one or more non-defective flash memory dies;
- one or more flash memory die that have been identified as defective;
- and
- means for disabling access to the die identified as defective.
An article of manufacture comprising machine-readable instructions that, when executed, cause operations to be performed, the operations comprising:
- identifying at least one criterion for determining whether a flash memory die is defective;
- identifying one or more defective flash memory dies in a set of flash memory dies that provide a nominal initial capacity;
- and
- disabling 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.
Dependencies are inferred from the claim text.