ELECTRONIC CIRCUIT
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United States of America Patent
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Issued Date -
Jul 21, 2011
app pub date -
Jan 10, 2011
filing date -
Jan 15, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A power-supply sequence-free electronic circuit is realized without the increase of the number of power supply detectors for detecting the rising of the power supply. The electronic circuit operated by supplying three or more types of power supply voltages to the ground voltage of the circuit generates a first detection signal indicating whether any one of other power supply voltages does not rise by a first detection circuit which is operated with a predetermined power supply voltage as an operation power supply. The electronic circuit generates a second detection signal indicating whether the predetermined power supply voltage rises by a second detection circuit which is provided for each of the other power supply voltages and operated with one power supply voltage of the other power supply voltages as an operation power supply. The electronic circuit generates a control signal for ensuring the rising of other power supply voltages for each of the other power supply voltages based on the first and second detection signals.
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