A method and apparatus for adaptively adjusting the operating voltage of an integrated circuit in response to tester-to-system variations, worst-case testing techniques, process variations, temperature variations, or reliability wearout mechanisms. The minimum operating voltage of an integrated circuit...http://www.google.com/patents/US7577859?utm_source=gb-gplus-sharePatent US7577859 - System and method of controlling power consumption in an electronic system by applying a uniquely determined minimum operating voltage to an integrated circuit rather than a predetermined nominal voltage selected for a family of integrated circuits