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PORTABLE ELECTRONIC DEVICE AND VOLTAGE CONVERTING CIRCUIT THEREOF

  • US 20130169043A1
  • Filed: 10/18/2012
  • Published: 07/04/2013
  • Est. Priority Date: 12/30/2011
  • Status: Active Grant
First Claim
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1. A voltage converting circuit, comprising:

  • a first port connected to a read/write control terminal of a central processing unit (CPU) through a 1-wire bus;

    a second port connected to a signal terminal of a battery through a 1-wire bus, the battery comprising an erasable programmable read-only memory (EPROM) connected to the signal terminal of the battery;

    a first power terminal connected to a first power supply that provides a first voltage about equal to a working voltage of the CPU;

    a second power terminal connected to a second power supply that provides a second voltage about equal to a working voltage of the EPROM.

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