Nonvolatile semiconductor memory with fast data programming and erasing function using ECC
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United States of America Patent
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Jul 6, 1999
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N/A
app pub date -
Nov 21, 1997
filing date -
Dec 3, 1996
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Abstract
A semiconductor nonvolatile memory wherein memory cells in which data is electrically processed are arranged in the form of a matrix, provided with an error correcting circuit for correcting error bits when there are less than a predetermined number of error bits in a plurality of bits of data; a circuit for processing data in units of the plurality of bits of data in the memory cells of the plurality of units and for counting the number of the unprocessed memory cells after data is processed; and a circuit for ending the processing of the data while leaving the unprocessed memory cells when the number of the unprocessed memory cells is less than the predetermined number of error bits and making the error correcting means save the error bits.
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