FULLY-DIGITAL MULTIPLE PIN VALUE DETECTOR APPARATUS AND SAMPLING METHODS USEFUL IN CONJUNCTION THEREWITH
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United States of America Patent
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Nov 23, 2016
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Nov 23, 2016
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Abstract
An Integrated circuit (IC) device accommodating a circuit and associated control module, being operative to determine an apparatus characteristic in accordance with one out of few selectable characteristics. The circuit is operative in conjunction with more than three of a plurality of external passive circuits corresponding to the plurality of apparatus characteristics, and includes (N≥1) digital I/O pins. The control module is operative to: (i) in response to a series of triggering signals, generate samples of the digital I/O pin's state that correspond to a plurality of different sequences of states when each of the plurality of external circuits is respectively applied to the pin and (ii) determining, from the samples, which of the plurality of different sequences of states has occurred that corresponds to the individual external circuit that has been applied to the pin; and (iii) determining an individual apparatus characteristic which corresponds to the determined sequence.
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