Testing circuit and printed circuit board using same
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United States of America Patent
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Apr 26, 2016
Grant Date -
Dec 12, 2013
app pub date -
Apr 30, 2013
filing date -
Jun 8, 2012
priority date (Note) -
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Abstract
A testing circuit for testing proper connections between pins and corresponding circuits within an integrated circuit includes a pin selection module. The pin selection module includes a plurality of input pins, an output pin, and a control pin. The pin selection module selectively connects one of the input pins to the output pin based upon a control signal from the control pin. A voltage-dividing module includes an input end to receive a test voltage, an output end connected with the output pin of the pin selection module, and a voltage-dividing element connected between the input end and the output end. A determination module receives an output voltage from the output end, and determines whether the voltage of the output end falls into one of several predetermined voltage ranges, and outputs a result accordingly.
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