Block health charge loss detection for block retirement in a memory sub-system
AssigneeMicron Technology, Inc.
InventorsFanqi Wu, Zhenlei Shen, Jiangli Zhu, Tingjun Xie
Life of this patent
Estimating the term…
Abstract
A processing device in a memory sub-system identifies a read error associated with a block and determines a charge loss value associated with the block. The processing device determines whether the charge loss value is greater than or equal to a charge loss threshold. Responsive to determining the charge loss value is greater than or equal to the charge loss threshold, the block is identified as a healthy block.
Claims20
A memory sub-system comprising:
- a memory device comprising a plurality of blocks;
- a processing device operatively coupled with the memory device, the processing device to perform operations comprising:
- identifying a read error internal to the memory sub-system and associated with a block of the plurality of blocks;
- determining a charge loss value associated with the block;
- determining whether the charge loss value is greater than or equal to a charge loss threshold;
- and
- responsive to determining the charge loss value is greater than or equal to the charge loss threshold, identifying the block as a healthy block.
A method comprising:
- identifying a read error internal to a memory device associated with a block of the memory device;
- determining a charge loss value associated with the block;
- determining whether the charge loss value is greater than or equal to a charge loss threshold;
- and
- responsive to determining the charge loss value is greater than or equal to the charge loss threshold, identifying the block as a healthy block.
A computer-readable non-transitory storage medium comprising executable instructions that, when executed by a controller managing a memory device comprising a plurality of memory cells, cause the controller to perform operations comprising:
- identifying a read error internal to the memory device and associated with a block;
- determining a charge loss value associated with the block;
- determining whether the charge loss value is greater than or equal to a charge loss threshold;
- and
- responsive to determining the charge loss value is greater than or equal to the charge loss threshold, identifying the block as a healthy block.
Dependencies are inferred from the claim text.