Invention Grant
- Patent Title: Methods of operating two-bit non-volatile flash memory cells
- Patent Title (中): 操作两位非易失性闪存单元的方法
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Application No.: US12035786Application Date: 2008-02-22
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Publication No.: US07804711B2Publication Date: 2010-09-28
- Inventor: Chao-I Wu
- Applicant: Chao-I Wu
- Applicant Address: TW Hsinchu
- Assignee: MACRONIX International Co., Ltd.
- Current Assignee: MACRONIX International Co., Ltd.
- Current Assignee Address: TW Hsinchu
- Agency: Jianq Chyun IP Office
- Main IPC: G11C16/04
- IPC: G11C16/04

Abstract:
A method for erasing a plurality of two-bit memory cells, each two-bit memory cell comprises a first bit and a second bit. A reference voltage is applied to a first bit line and a second bit line, the first bit line being associated with the first bits of each two-bit memory cell and the second bit line associated with the second bits of each two-bit memory cell. Then a control activation voltage is applied to a first bit line select and a second bit line select, each bit line associated with the first bits and the second bits of each memory cell, respectively. Then an operating voltage is applied to a plurality of word lines associated with each two-bit memory cell, wherein the operating voltage is between 14 and 20 volts.
Public/Granted literature
- US20090213651A1 TWO-BIT NON-VOLATILE FLASH MEMORY CELLS AND METHODS OF OPERATING MEMORY CELLS Public/Granted day:2009-08-27
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