Static information storage and retrieval – Floating gate – Particular biasing
Reexamination Certificate
2006-09-12
2008-11-18
Elms, Richard (Department: 2824)
Static information storage and retrieval
Floating gate
Particular biasing
C365S185220, C365S185200, C365S185110, C365S230030, C365S238500, C365S235000, C365S185290, C365S185190, C714S030000
Reexamination Certificate
active
07453731
ABSTRACT:
In a non-volatile memory, a selected page on a word line is successively programmed by a series of voltage pulses of a staircase waveform with verifications in between the pulses until the page is verified to a designated pattern. The programming voltage at the time the page is programmed verified will be to estimate the initial value of a starting programming voltage for the page. The estimation is further refined by using the estimate from a first pass in a second pass. Also, when the test is over multiple blocks, sampling of word lines based on similar geometrical locations of the blocks can yield a starting programming voltage optimized for faster programming pages.
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Hook Charles Moana
Li Yan
Tu Loc
Davis , Wright, Tremaine, LLP
Elms Richard
Sandisk Corporation
Wendler Eric
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