Capacitor backup for SRAM
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United States of America Patent
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Aug 4, 2015
Grant Date -
Dec 11, 2014
app pub date -
Dec 20, 2013
filing date -
Jun 7, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
Embodiments of the disclosure provide a method for backing up data in an SRAM device, and an SRAM device that includes a capacitive backup circuit for backing up data in an SRAM device. The method may include writing data to the SRAM cell by applying an input voltage to set an input node of cross-coupled inverters to a memory state. The method may also include backing up the data written to the SRAM cell by electrically coupling the input node to the capacitive backup circuit. The method may also include restoring the data stored in the capacitive backup circuit to the SRAM cell by electrically coupling the capacitive backup circuit to the input node.
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