Method for compensated sensing in non-volatile memory
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United States of America Patent
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Jan 29, 2008
Grant Date -
Jul 20, 2006
app pub date -
Dec 28, 2005
filing date -
Sep 24, 2002
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Abstract
One or more sense amplifiers for sensing the conduction current of non-volatile memory is controlled by signals that are timed by a reference sense amplifier having similar characteristics and operating conditions. In one aspect, a sensing period is determined by when the reference sense amplifier sensing a reference current detects an expected state. In another aspect, an integration period for an amplified output is determined by when the reference sense amplifier outputs an expected state. When these determined timings are used to control the one or more sense amplifiers, environment and systemic variations are tracked.
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