Master-slave flip-flop with low power consumption
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United States of America Patent
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Jan 27, 2015
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app pub date -
Aug 6, 2013
filing date -
Sep 6, 2012
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Abstract
In a master-slave flip-flop, the master latch has first and second three-state stages, and a first feedback stage. The slave latch has third and fourth three-state stages, and a second feedback stage. First and second clock switches having opposite phases are provided. The first clock switch is configured in one of the first and fourth three-state stages, and the other stage shares the first clock switch. The second clock switch is configured in one of the second and third three-state stages, and the other stage shares the second clock switch. The second three-state stage has an additional pair of complementary devices having signal paths connected in series with each other with both being gated by a data output of the slave latch. The flip-flop reduces the number of clock switches and clock switch power consumption.
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