POWER-ON RESET CIRCUIT
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United States of America Patent
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Issued Date -
Apr 19, 2012
app pub date -
Jan 11, 2011
filing date -
Oct 19, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A power-on reset circuit including a voltage divider, a first transistor and a second transistor is provided. The voltage divider is electrically connected between a first source voltage and a first ground voltage, and generates a sensing voltage. A drain of the first transistor is electrically connected to a second source voltage, and a gate and a source of the first transistor are connected to each other. A conductive channel of the second transistor is the same with that of the first transistor, and a type of the second transistor is different from a type of the first transistor. Furthermore, a drain of the second transistor is electrically connected to the source of the first transistor. A gate of the second transistor receives the sensing voltage. A source of the second transistor is electrically connected to a second ground voltage.
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