Invention Grant
- Patent Title: Non-volatile multilevel memory cell programming
- Patent Title (中): 非易失性多层存储器单元编程
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Application No.: US12038445Application Date: 2008-02-27
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Publication No.: US07692971B2Publication Date: 2010-04-06
- Inventor: Violante Moschiano , Giovanni Santin , Tommaso Vali , Massimo Rossini
- Applicant: Violante Moschiano , Giovanni Santin , Tommaso Vali , Massimo Rossini
- Applicant Address: US ID Boise
- Assignee: Micron Technology, Inc.
- Current Assignee: Micron Technology, Inc.
- Current Assignee Address: US ID Boise
- Agency: Brooks, Cameron & Huebsch, PLLC
- Priority: ITRM2007A0167 20070328
- Main IPC: G11C11/34
- IPC: G11C11/34

Abstract:
Embodiments of the present disclosure provide methods, devices, modules, and systems for programming multilevel non-volatile multilevel memory cells. One method includes increasing a threshold voltage (Vt) for each of a number of memory cells until the Vt reaches a verify voltage (VFY) corresponding to a program state among a number of program states. The method includes determining whether the Vt of each of the cells has reached a pre-verify voltage (PVFY) associated with the program state, selectively biasing bit lines coupled to those cells whose Vt has reached the PVFY, adjusting the PVFY to a different level, and selectively biasing bit lines coupled to cells whose Vt has reached the adjusted PVFY, wherein the PVFY and the adjusted PVFY are less than the VFY.
Public/Granted literature
- US20080239806A1 NON-VOLATILE MULTILEVEL MEMORY CELL PROGRAMMING Public/Granted day:2008-10-02
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