Microprocessor, integrated circuit, and method for selecting substrate biasing

Microprocessor, integrated circuit, and method for selecting substrate biasing

  • CN 101,686,050 A
  • Filed: 09/25/2009
  • Published: 03/31/2010
  • Est. Priority Date: 09/25/2008
  • Status: Active Application
First Claim
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1. a micro processor, apparatus is characterized in that, comprising:

  • One first power supply supply node provides one first core voltage;

    One mac function has a plurality of power modes, and this mac function comprises;

    A plurality of semiconductor devices have a substrate contact respectively;

    AndOne first substrate bias lead is arranged at the above-mentioned functions block and couples the above-mentioned substrate contact of at least one above-mentioned semiconductor device;

    One first charge node;

    One first selects circuit, when above-mentioned functions block during in low power mode, couple the above-mentioned first substrate bias lead to above-mentioned first charge node, and when the above-mentioned functions block is full power mode, clamp down on the above-mentioned first substrate bias lead to above-mentioned first power supply supply node;

    AndOne substrate bias circuit when above-mentioned functions block during in above-mentioned low power mode, charges to one first substrate bias with respect to one first offset voltage of above-mentioned first core voltage with above-mentioned first charge node.

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