Abstract: A system and method for a multi-use eFuse macro is presented. A device includes multiplexers and selection logic that allow eFuse latches to store auxiliary data in addition to programming electronic fuses. The multiplexers and selection logic are coupled to the inputs and outputs of the eFuse latches, and are controlled by a processing unit or an external tester. When a tester wishes to program or update an eFuse element (electronic fuses), the multiplexers and selection logic are configured for “eFuse” mode, which allows an eFuse controller to provide program data and control data to the eFuse latches which, in turn, program the eFuse element. When the device requires additional storage, the multiplexers and selection logic are configured for “auxiliary data” mode, which allows a processing unit to store and retrieve data in the eFuse latches.