Invention Grant
- Patent Title: Circuit and method for reducing write disturb in a non-volatile memory device
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Application No.: US15055972Application Date: 2016-02-29
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Publication No.: US09437322B2Publication Date: 2016-09-06
- Inventor: Steven Smith
- Applicant: Sidense Corp.
- Applicant Address: CA Ottawa
- Assignee: SIDENSE CORP.
- Current Assignee: SIDENSE CORP.
- Current Assignee Address: CA Ottawa
- Agency: Borden Ladner Gervais LLP
- Agent Shin Hung
- Main IPC: G11C17/18
- IPC: G11C17/18 ; G11C17/16

Abstract:
An active precharge circuit for a non-volatile memory array which minimizes write disturb to non-selected memory cells during programming is disclosed. In a programming cycle, all bitlines are pre-charged to a program inhibit voltage level and held at the program inhibit voltage level with current or voltage sources coupled to each of the bitlines in a precharge operation and a following programming operation. In the programming operation, a bitline connected to a memory cell to be programmed is driven to a programming level, such as VSS, while the active precharge circuit is enabled to enable programming thereof. Because the other non-selected bitlines are held at the program inhibit voltage level, they will not be inadvertently programmed when the programming voltage is supplied by the word line.
Public/Granted literature
- US20160180963A1 CIRCUIT AND METHOD FOR REDUCING WRITE DISTURB IN A NON-VOLATILE MEMORY DEVICE Public/Granted day:2016-06-23
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