Memory circuit having non-volatile memory cell and methods of using
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United States of America Patent
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Jun 6, 2017
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N/A
app pub date -
Oct 19, 2015
filing date -
Oct 17, 2014
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Abstract
One aspect relates to a memory circuit that has a programmable non-volatile memory (NVM) cell configured to generate an NVM output signal indicative of a program state of the NVM cell and to configure a volatile output based on the program state of the NVM cell. The NVM cell comprises a first anti-fuse device, a first select device connected in series with the first anti-fuse device at a first node, and a first pass device. The memory circuit also may have a programmable (independently of the NVM cell) volatile memory (VM) cell configured to receive the NVM output signal at a VM input node and to generate a VM output signal indicative of the program state of the VM cell. The NVM cell may have two NV elements that are separately programmable and are separately selectable via separate access transistors to drive the VM input node.
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