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Reference-less clock circuit

  • US 7,332,975 B2
  • Filed: 03/27/2006
  • Issued: 02/19/2008
  • Est. Priority Date: 02/27/2006
  • Status: Active Grant
First Claim
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1. An integrated circuit comprising:

  • a controllable oscillator arranged in an open loop configuration;

    a programmable divider circuit coupled to divide an output of the controllable oscillator according to a programmable divide value;

    control logic coupled to supply a control word to adjust an output frequency of the controllable oscillator according to a detected temperature;

    a non-volatile storage storing a control word, an output of the controllable oscillator determined according to a value of the control word; and

    wherein the divide value for the programmable divider circuit is stored in the non-volatile storage.

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