Defective Memory Unit Screening in a Memory System
AssigneeMicron Technology, Inc.
InventorAlex Frolikov
Life of this patent
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Abstract
A memory system having non-volatile media and a controller configured to process requests from a host system to store data in the non-volatile media or retrieve data from the non-volatile media. The non-volatile media has a set of memory units. The memory system stores an indicator indicating whether the memory system is operating in a user mode or a manufacturing mode. A defect manager of the memory system identifies a threshold based on the indicator, monitors an error rate in reading data from the non-volatile media and, in response to the error rate reaching the threshold, screens the non-volatile media for defective memory units.
Claims20
A memory system, comprising:
- non-volatile media having a set of memory units;
- a controller configured to process requests from a host system to store data in the non-volatile media or retrieve data from the non-volatile media;
- wherein the memory system stores an indicator indicating whether the memory system is operating in a user mode or a manufacturing mode;
- and
- wherein a defect manager of the memory system identifies a threshold based on the indicator, monitors an error rate in reading data from the non-volatile media and, in response to the error rate reaching the threshold, screens the non-volatile media for defective memory units.
A method, comprising:
- processing, by a controller of a memory system having non-volatile media, requests from a host system to store data in the non-volatile media or retrieve data from the non-volatile media, the non-volatile media having a set of memory units;
- storing, in the memory system, an indicator indicating whether the memory system is operating in a user mode or a manufacturing mode;
- identifying, by a defect manager of the memory system, a threshold based on the indicator;
- monitoring, by the defect manager, an error rate in reading data from the non-volatile media;
- and
- in response to the error rate reaching the threshold, screening by the defect manager the non-volatile media for defective memory units.
A non-transitory computer storage medium storing instructions which, when executed by a memory system having non-volatile media, and a controller, cause the memory system to perform a method, the method comprising:
- processing, by the controller, requests from a host system to store data in the non-volatile media or retrieve data from the non-volatile media, the non-volatile media having a set of memory units;
- identifying a threshold based on whether the memory system is operating in a user mode or a manufacturing mode;
- monitoring an error rate in reading data from the non-volatile media;
- and
- in response to the error rate reaching the threshold, screening the non-volatile media for defective memory units.
Dependencies are inferred from the claim text.