Invention Grant
- Patent Title: Evaluation of background leakage to select write voltage in memory devices
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Application No.: US17845174Application Date: 2022-06-21
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Publication No.: US12014784B2Publication Date: 2024-06-18
- Inventor: Nevil N. Gajera , Karthik Sarpatwari , Zhongyuan Lu
- 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: Greenberg Traurig
- Main IPC: G11C16/10
- IPC: G11C16/10 ; G11C16/26 ; G11C16/30 ; G11C16/34

Abstract:
Systems, methods, and apparatus related to memory devices. In one approach, a memory device has a memory array including memory cells. A controller of the memory device evaluates background leakage in order to select a write voltage to apply to a memory cell when performing a programming operation. The write voltage is dynamically selected from two or more write voltages. These write voltages include a first write voltage that is a normal or default voltage, and a second write voltage that is a boosted write voltage. The controller applies a pre-sensing voltage and pre-read voltage to the memory cell, and determines first and second respective currents that result from applying these voltages. In response to determining that the first current exceeds a first threshold (indicating background leakage), and the second current is below a second threshold that is greater than the first threshold (indicating that the memory cell does not snap), the controller selects the second (boosted) write voltage.
Public/Granted literature
- US20220319616A1 EVALUATION OF BACKGROUND LEAKAGE TO SELECT WRITE VOLTAGE IN MEMORY DEVICES Public/Granted day:2022-10-06
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