Power-up signal generating circuit of semiconductor integrated circuit
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United States of America Patent
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Dec 17, 2013
Grant Date -
Jan 24, 2013
app pub date -
Nov 8, 2011
filing date -
Jul 22, 2011
priority date (Note) -
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Abstract
A power-up signal generation circuit includes a discharge driving unit configured to discharge a voltage of a power-up detection node in response to a voltage of an external power supply voltage, a charge driving unit configured to charge the voltage of the power-up detection node in response to a voltage of an internal power supply voltage, a power reset discharging unit configured to discharge a voltage of the power-up detection node while the semiconductor integrated circuit is reset, and an output unit configured to output a power-up signal in response to a voltage change of the power-up detection node.
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