Patent ID: 7995375

Claim:
An integrated circuit comprising: programmable circuitry operable to be powered at a first power level, the programmable circuitry including transistors; and memory elements operable to be powered at a second power level that is greater than the first power level, wherein the memory elements are operable to provide output signals to selectively turn off one or more of the transistors and power down portions of the integrated circuit, wherein the first power level is provided using a first positive voltage and a first ground voltage, wherein the second power level is provided using a second positive voltage and a second ground voltage, wherein each memory element comprises a memory element transistor operable to be controlled by control signals, and wherein the control signals include at least one control signal selected from the group consisting of: a first control signal having a logic low level that is less than the first ground voltage and a second control signal having a logic high level that is greater than the first positive voltage.