Systems and methods for producing a predetermined output in a sequential circuit during power on
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United States of America Patent
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May 21, 2013
Grant Date -
Nov 18, 2010
app pub date -
Apr 19, 2010
filing date -
May 15, 2009
priority date (Note) -
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Abstract
An integrated circuit configured for producing a predetermined output in a sequential circuit during power on is disclosed. The integrated circuit includes one or more capacitors coupled to one or more internal nodes. The one or more capacitors charge the internal nodes if a voltage at the power supply node ramps up to a set voltage at or faster than a period of time. The integrated circuit also includes a first transistor coupled to the power supply node. The first transistor produces leakage current that charges one or more internal nodes when the voltage on the power supply node ramps up to the set voltage no faster than the period of time. The integrated circuit also includes an output node. A logical value on the output node is based on a logical value on the charged internal nodes when an input signal to the sequential circuit is not active and the voltage on the power supply node is at the set voltage.
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