Fast response circuits and methods for FRAM power loss protection
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United States of America Patent
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May 7, 2013
Grant Date -
Jun 21, 2012
app pub date -
Dec 20, 2010
filing date -
Dec 20, 2010
priority date (Note) -
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Abstract
A circuit to protect data on an FRAM during a read operation includes an FRAM voltage regulator having an output to supply an FRAM operating voltage to the FRAM. A voltage monitor monitors a supply voltage for the FRAM to generate a voltage fault signal if the supply voltage falls below a predetermined value. And a circuit responsive to the voltage fault signal maintains the FRAM operating voltage above a voltage required to assure data integrity of the FRAM for a sufficient time required to perform an FRAM read operation.
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