Multi-voltage complementary metal oxide semiconductor integrated circuits based on always-on N-well architecture
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United States of America Patent
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Feb 27, 2018
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Dec 30, 2015
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May 27, 2015
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Abstract
Examples of multi-voltage (MV) complementary metal oxide semiconductor (CMOS) integrated circuits (ICs) based on always-on N-well architecture are described. A MV CMOS IC may include first CMOS cells, second CMOS cells, N-wells and always-on taps. Each first CMOS cell may have a supply terminal configured to receive a local supply voltage, and an N-well (NW) terminal configured to receive a global supply voltage. The second CMOS cells may include always-on CMOS cells. Each second CMOS cell may have a supply terminal configured to receive the global supply voltage, and an NW terminal configured to receive the global supply voltage. The NW terminal of at least one of the second CMOS cells and the NW terminal of at least one of the first CMOS cells may be formed in a first N-well of the one or more N-wells.
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