Invention Grant
- Patent Title: Systems and methods for 1.5 bits per cell charge distribution
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Application No.: US17582941Application Date: 2022-01-24
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Publication No.: US11763871B2Publication Date: 2023-09-19
- Inventor: Daniele Vimercati
- 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: Fletcher Yoder, P.C.
- Main IPC: G11C11/22
- IPC: G11C11/22

Abstract:
Memory cells are described that include two reference voltages that may store and sense three distinct memory states by compensating for undesired intrinsic charges affecting a memory cell. Although embodiments described herein refer to three memory states, it should be appreciated that in other embodiments, the memory cell may store or sense more than three charge distributions using the described methods and techniques. In a first memory state, a programming voltage or a sensed voltage may be higher than a first reference voltage and a second reference voltage. In a second memory state, the applied voltage or the sensed voltage may be between the first and the second reference voltages. In a third memory state, the applied voltage or the sensed voltage may be lower than the first and the second reference voltages. As such, the memory cell may store and retrieve three memory states.
Public/Granted literature
- US20220172764A1 SYSTEMS AND METHODS FOR 1.5 BITS PER CELL CHARGE DISTRIBUTION Public/Granted day:2022-06-02
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