Circuitry to compensate for data drift in analog neural memory in an artificial neural network
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United States of America Patent
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Aug 6, 2024
Grant Date -
Jul 8, 2021
app pub date -
Mar 26, 2020
filing date -
Mar 26, 2020
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Abstract
Numerous embodiments are provided for compensating for drift error in non-volatile memory cells within a VMM array in an analog neuromorphic memory system. For example, in one embodiment, a circuit is provided for compensating for drift error during a read operation, the circuit comprising a data drift monitoring circuit coupled to the array for generating an output indicative of data drift; and a bitline compensation circuit for generating a compensation current in response to the output from the data drift monitoring circuit and injecting the compensation current into one or more bitlines of the array.
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