Semiconductor device
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United States of America Patent
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Apr 17, 2018
Issued Date -
N/A
app pub date -
Jul 26, 2017
filing date -
Jul 27, 2016
priority date (Note) -
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Abstract
A semiconductor device includes: a diagnosis portion which diagnoses, when the device is started up, whether an abnormality occurs in a component for setting that is externally connected; and a control portion which stops the startup of the device when the diagnosis portion diagnoses that an abnormality occurs, the diagnosis portion diagnoses whether an abnormality occurs in which the connection of the component for setting that is a resistor is disconnected, the semiconductor device further includes an external terminal which is connected to one end of the resistor and the diagnosis portion includes a constant current circuit which passes a constant current through the resistor via the external terminal, a comparator to which a voltage produced at the external terminal is input and a transistor which switches between the connection and interruption of a path along which the constant current is passed.
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