Patent ID: 6957372
Filing Date: 2005-10-18
Classification: G11C

Abstract:
1. An integrated circuit having at least one circuit module connected to at least one on-chip power supply, said circuit containing measurement means for controlling operation of said power supply in response to current leakage; a BIST system for testing operation of said circuit, said BIST system having control means for testing current drain in selected circuit modules; in which said circuit includes a memory array and redundancy means for replacing selected elements in said memory array; said BIST further comprises means for selectively applying voltage to a word line within said memory array, whereby said means for testing current drain may test for current drain from said wordline; and said BIST includes control circuitry to control said redundancy means to replace a defective element; and said BIST includes means for replacing an element associated with said wordline when said current drawn exceeds a reference value that is less than a short circuit current.