Method of making integrated circuit embedded with non-volatile programmable memory having variable coupling
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United States of America Patent
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Dec 29, 2015
Grant Date -
Mar 6, 2014
app pub date -
Oct 8, 2013
filing date -
Nov 14, 2007
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Abstract
A programmable non-volatile device is made with a floating gate that functions as a FET gate that overlaps a portion of a source/drain region and allows for variable coupling through geometry and/or biasing conditions. This allows a programming voltage for the device to be imparted to the floating gate through variable capacitive coupling, thus changing the state of the device. Multi-state embodiments are also possible. The invention can be used in environments such as data encryption, reference trimming, manufacturing ID, security ID, and many other applications.
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