Digital data handling in a circuit powered in a high voltage domain and formed from devices designed for operation in a lower voltage domain
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United States of America Patent
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Apr 16, 2013
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N/A
app pub date -
Dec 7, 2011
filing date -
Dec 7, 2011
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Abstract
Circuitry, operating in a high voltage domain, including a high and low voltage inputs, and including a plurality of devices designed to operate optimally powered in a native voltage domain that is lower voltage than said high voltage domain and some devices arranged in two sets. The circuitry including a further input for receiving the high native voltage level. Each set having at least one device, a first set being arranged to receive an intermediate low reference voltage level as a low voltage level signal and the high voltage level as a high voltage level signal and the second set being arranged to receive the high native voltage level as a high voltage level signal and the low voltage level as a low voltage level signal. The intermediate low reference voltage level includes a voltage level generated by subtracting the high native voltage level from the high voltage level.
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