Invention Grant
- Patent Title: Auto-referenced memory cell read techniques
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Application No.: US15853328Application Date: 2017-12-22
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Publication No.: US10566052B2Publication Date: 2020-02-18
- Inventor: Graziano Mirichigni , Marco Sforzin , Alessandro Orlando
- Applicant: Micron Technology, Inc.
- Applicant Address: US ID Boise
- Assignee: Micron Technology, Inc.
- Current Assignee: Micron Technology, Inc.
- Current Assignee Address: US ID Boise
- Agency: Holland & Hart LLP
- Main IPC: G11C11/22
- IPC: G11C11/22 ; G11C11/56 ; G11C16/32 ; G11C16/30 ; G11C8/14 ; G11C16/08

Abstract:
Methods, systems, and devices related to auto-referenced memory cell read techniques are described. The auto-referenced read may encode user data to include a certain number bits having a first logic state prior to storing the user data in memory cells. Subsequently, reading the encoded user data may be carried out by applying a read voltage to the memory cells while monitoring a series of switching events by activating a subset of the memory cells having the first logic state. The auto-referenced read may identify a particular switching event that correlates to a median threshold voltage value of the subset of the memory cells. Then, the auto-referenced read may determine a reference voltage that takes into account a statistical property of threshold voltage distribution of the subset of the memory cells. The auto-referenced read may identify a time duration to maintain the read voltage based on determining the reference voltage. When the time duration expires, the auto-referenced read may determine that the memory cells that have been activated correspond to the first logic state.
Public/Granted literature
- US20190198096A1 AUTO-REFERENCED MEMORY CELL READ TECHNIQUES Public/Granted day:2019-06-27
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