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`1. An instruction-processing system with minimal minimized static power leakage, the
`instruction-processing system comprising:
`a core with instruction-processing circuitry;
`an area coupled to the core;
`a core voltage provided to the core; and
`an area voltage provided to the area;
`wherein in a normal operation mode:
`a clock signal to the core is active;
`the core voltage is a first value that is sufficient to maintain the state information
`of the instruction-processing circuitry;
`the core is active;
`the area voltage is a second value that is sufficient to maintain the data stored in
`the area; and
`the area is active;
`wherein in a first power-saving mode that is can be exited upon receipt of an interrupt
`signal:
`
`the clock signal to the core is inactive;
`the core voltage is equal to or greater than the first value sufficient to maintain the
`state information of the instruction-processing circuitry; and
`the area voltage is equal to or greater than the second value sufficient to maintain
`the data stored in the area;
`wherein in a second power-saving mode that can be exited upon receipt of a signal that is
`not an interrupt signal:
`the clock signal to the core is inactive;
`the core voltage is less than the first value; and
`the area voltage is equal to or greater than the second value sufficient to maintain
`the data stored in the area.
`
`2. The instruction-processing system of claim 1, wherein the first power-saving mode can
`be exited upon receipt of a signal that is not an interrupt signal.
`
`3. The instruction-processing system of claim 1, wherein the area comprises a cache.
`
`4. The instruction-processing system of claim 3, wherein the area further
`comprises cache tags.
`
`5. The instruction-processing system of claim 1, wherein prior to entering the second
`power-saving mode, the state of the core is saved to a memory.
`
`6. The instruction-processing system of claim 1, wherein upon exiting the second power-
`saving mode, the state of the core is restored.
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`Qualcomm, Ex. 1002, Page 1
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`7. The instruction-processing system of claim 1, wherein in the second power-saving
`mode, the core voltage is at zero.
`
`8. A method for minimizing static power leakage in an instruction-processing system, wherein
`the instruction-processing system comprises a core with instruction-processing circuitry, an area
`coupled to the core, a core voltage provided to the core, and an area voltage provided to the area,
`the method comprising:
`entering a normal operation mode by:
`providing a clock signal to the core;
`providing the core with a core voltage that is equal to a first value that is sufficient
`to maintain the state information of the instruction-processing circuitry;
`providing the area with an area voltage that is equal to a second value that is
`sufficient to maintain the data stored in the area;
`entering a first power-saving mode by:
`disabling the clock signal to the core;
`providing the core with a core voltage that is equal to sufficient to maintain the
`state information of the instruction-processing circuitry or greater than the first
`value; and
`providing the area with an area voltage that is equal to sufficient to maintain the
`data stored in the area or greater than the second value;
`exiting the first power-saving mode upon receipt of an interrupt signal;
`entering a second power-saving mode by:
`disabling the clock signal to the core;
`setting the core voltage to a value less than the first value; and
`providing the area with an area voltage that is equal to or greater than the second
`value; and
`exiting the second power-saving mode upon receipt of a signal that is not an interrupt
`signal.
`
`9. The method of claim 8, further comprising exiting the first power-saving mode upon
`receipt of a signal that is not an interrupt signal.
`
`10. The instruction-processing system method of claim 8, wherein the area comprises a
`cache.
`
`11. The method of claim 10, wherein the area further comprises cache tags.
`
`12. The method of claim 8, further comprising saving the state of the core to a memory
`prior to entering the second power-saving mode.
`
`13. The method of claim 8, further comprising restoring the state of the core upon exiting
`the second power-saving mode.
`
`14. The method of claim 8, wherein in the second power-saving mode, setting the core
`voltage to the value less than the first value comprises setting the core voltage to zero.
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`Qualcomm, Ex. 1002, Page 2
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`15. A computer-readable medium containing data representing storing code which represents an
`instruction-processing system with minimal minimized static power leakage, the instruction-
`processing system comprising:
`a core with instruction-processing circuitry;
`an area coupled to the core;
`a core voltage provided to the core; and
`an area voltage provided to the area;
`wherein in a normal operation mode:
`a clock signal to the core is active;
`the core voltage is a first value that is sufficient to maintain the state information
`of the instruction-processing circuitry;
`the core is active;
`the area voltage is a second value that is sufficient to maintain the data stored in
`the area; and
`the area is active;
`wherein in a first power-saving mode that is can be exited upon receipt of an interrupt
`signal:
`
`the clock signal to the core is inactive;
`the core voltage is equal to or greater than the first value sufficient to maintain the
`state information of the instruction-processing circuitry; and
`the area voltage is equal to or greater than the second value sufficient to maintain
`the data stored in the area;
`wherein in a second power-saving mode that can be exited upon receipt of a signal that is
`not an interrupt signal:
`the clock signal to the core is inactive;
`the core voltage is less than the first value; and
`the area voltage is equal to or greater than the second value sufficient to maintain
`the data stored in the area.
`
`16. The computer-readable medium of claim 15, wherein the first power-saving mode can
`be exited upon receipt of a signal that is not an interrupt signal.
`
`17. The computer-readable medium of claim 15, wherein the area comprises a cache.
`
`18. The computer-readable medium of claim 17, wherein the area further
`comprises cache tags.
`
`19. The computer-readable medium of claim 15, wherein prior to entering the second
`power-saving mode, the state of the core is saved to a memory.
`
`20. The computer-readable medium of claim 15, wherein upon exiting the second power-
`saving mode, the state of the core is restored.
`
`21. The computer-readable medium stem of claim 15, wherein in the second power-
`saving mode, the core voltage is at zero.
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`Qualcomm, Ex. 1002, Page 3
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