Patent ID: 6472862
Filing Date: 2002-10-29
Classification: G01R,G06Q,G11C

Abstract:
A device for providing a plurality of programmable values, the device comprising:first and second supply terminals; a common node; a plurality of programmable circuits, each comprising, a reference node that provides one of said programmable values, an impedance element having a first terminal coupled to said first supply terminal and having a second terminal coupled to said reference node, and a programmable element having a first terminal coupled to said reference node and having a second terminal coupled to said common node; a normal-mode switch coupled between said common node and said second supply terminal; a test circuit coupled between said common node and said second supply terminal; and a logic circuit having a plurality of input terminals coupled to more than one of said reference nodes and having an output terminal, said logic circuit operable to logically combine said reference values on said input terminals into a combined reference signal on said output terminal.