Invention Publication
- Patent Title: MEMORY READ CALIBRATION BASED ON MEMORY DEVICE-ORIGINATED METADATA CHARACTERIZING VOLTAGE DISTRIBUTIONS
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Application No.: US17735458Application Date: 2022-05-03
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Publication No.: US20230359388A1Publication Date: 2023-11-09
- Inventor: Dung Viet Nguyen , Patrick R. Khayat , Zhengang Chen , James Fitzpatrick , Sivagnanam Parthasarathy , Eric N. Lee
- Applicant: Micron Technology, Inc.
- Applicant Address: US ID Boise
- Assignee: Micron Technology, Inc.
- Current Assignee: Micron Technology, Inc.
- Current Assignee Address: US ID Boise
- Main IPC: G06F3/06
- IPC: G06F3/06

Abstract:
Described are systems and methods for memory read calibration based on memory device-originated metadata characterizing voltage distributions. An example memory device comprises: a memory array comprising a plurality of memory cells electrically coupled to a plurality of wordlines; and a controller coupled to the memory array, the controller to perform operations comprising: receiving one or more metadata values characterizing threshold voltage distributions of a subset of the plurality of memory cells connected to one or more bitlines, wherein the one or more metadata values reflect a conductive state of the one or more bitlines; determining a read voltage adjustment value based on the one or more metadata values; and applying the read voltage adjustment value for reading the subset of the plurality of memory cells.
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