Nonvolatile latch circuit and logic circuit, and semiconductor device using the same
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United States of America Patent
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Apr 30, 2013
Grant Date -
Aug 4, 2011
app pub date -
Dec 7, 2010
filing date -
Dec 11, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
To provide a novel nonvolatile latch circuit and a semiconductor device using the nonvolatile latch circuit, a nonvolatile latch circuit includes a latch portion having a loop structure where an output of a first element is electrically connected to an input of a second element, and an output of the second element is electrically connected to an input of the first element; and a data holding portion configured to hold data of the latch portion. In the data holding portion, a transistor using an oxide semiconductor as a semiconductor material for forming a channel formation region is used as a switching element. In addition, a capacitor electrically connected to a source electrode or a drain electrode of the transistor is included.
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