Portable electronic device and voltage converting circuit thereof
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United States of America Patent
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Jan 24, 2017
Grant Date -
Jul 4, 2013
app pub date -
Oct 18, 2012
filing date -
Dec 30, 2011
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Abstract
A portable electronic device includes a battery, a central processing unit (CPU), and voltage converting circuit. The battery includes an erasable programmable read-only memory (EPROM) and a signal terminal connected to the EPROM. The CPU includes a read/write control terminal. The voltage converting circuit includes a first power terminal connected to a first power supply, a second power terminal connected to a second power supply, a first port connected to the read/write control terminal through a 1-wire bus, and a second port connected to the signal terminal.
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