Multilevel sense device for a flash memory
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United States of America Patent
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Aug 10, 1999
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N/A
app pub date -
Oct 29, 1998
filing date -
Oct 29, 1998
priority date (Note) -
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Abstract
A multilevel sense device for a flash memory according to the invention is disclosed. When reading multilevel digital data stored in a selected cell of a primary cells array, the primary cells array generates and transmits a sense current to a sense amplifier. Then, the sense current is compared with permanent currents pre-established by a reference cells array thereby to determine/fetch the digital data. Furthermore, in the multilevel sense device, multilevel digital data stored in a selected cell are totally read out in one time. This causes more reading time saved.
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