Use of data latches in multi-phase programming of non-volatile memories

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United States of America Patent

PATENT NO 7158421
SERIAL NO

11097517

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Abstract

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A non-volatile memory device includes circuitry for governing a multi-phase programming process in a non-volatile memory. The exemplary embodiment uses a quick pass write technique where a single programming pass is used, but the biasing of the selected memory cells is altered to slow programming as the memory cells approach their target values by raising the voltage level of the channels of the selected memory cells. A principle aspect of the present invention introduces a latch associated with the read/write circuitry connectable to each selected memory cell along a corresponding bit line for the storage of the result of the verify at this lower level.

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Patent Owner(s)

  • SANDISK TECHNOLOGIES LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cernea, Raul-Adrian Santa Clara, CA 131 7379
Li, Yan Milpitas, CA 1328 19621

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