US 2026/0029931 A1 · READ ERROR HANDLING OPERATIONS WITH SHORTER SENSING TIME

Abstract

Methods, systems, and devices for read error handling (REH) operations with shorter sensing time are described. For example, a memory system may use a shorter sensing duration (e.g., relative to nominal read operations outside an REH procedure) for performing read operations in the REH procedure, which may reduce BEC and shorten the read duration to increase read performance. Shorter sensing durations may inherently upshift the voltage threshold distribution of memory cells, increasing their reliability and decreasing an associated bit error count. The shorter sensing durations may be used for any read operation performed in the REH procedure. In some cases, the memory system may enter a REH procedure for a block family (e.g., for a sequential read operation). In such cases, the memory system may read the remaining blocks in the block family using the shorter sensing duration after exiting the REH procedure.

Claims25

Dependent claims

A memory system, comprising:

one or more memory devices;
and
processing circuitry coupled with the one or more memory devices and configured to cause the memory system to:
perform a first set of one or more read operations in accordance with a first sensing duration;
enter a read error handling procedure based at least in part on detecting that a first quantity of bit errors exceeds a threshold, wherein the first quantity of bit errors is associated with the first set of one or more read operations;
and
perform, during the read error handling procedure, a second set of one or more read operations in accordance with one or more second sensing durations, wherein the one or more second sensing durations are each shorter than the first sensing duration.

4 more elements

A method by a memory system, comprising:

performing a first set of one or more read operations in accordance with a first sensing duration;
entering a read error handling procedure based at least in part on detecting that a first quantity of bit errors exceeds a threshold, wherein the first quantity of bit errors is associated with the first set of one or more read operations;
and
performing, during the read error handling procedure, a second set of one or more read operations in accordance with one or more second sensing durations, wherein the one or more second sensing durations are each shorter than the first sensing duration.

1 more element

A non-transitory computer-readable medium storing code, the code comprising instructions executable by one or more processors to:

perform a first set of one or more read operations in accordance with a first sensing duration;
enter a read error handling procedure based at least in part on detecting that a first quantity of bit errors exceeds a threshold, wherein the first quantity of bit errors is associated with the first set of one or more read operations;
and
perform, during the read error handling procedure, a second set of one or more read operations in accordance with one or more second sensing durations, wherein the one or more second sensing durations are each shorter than the first sensing duration.

1 more element

Dependencies are inferred from the claim text.

Read error handling operations with shorter sensing time

Life of this patent

Read error handling operations with shorter sensing time

Life of this patent

Abstract

Claims25