Patent ID: 7847626
Filing Date: 2010-12-07
Classification: H01L

Abstract:
1. A semiconductor die, comprising: an electrical circuit; a plurality of conductive paths extending at least partially through the die; a first set of external terminals; a second set of external terminals, each of the terminals of the second set being paired with a respective one of the terminals of the first set, each of the terminals of the second set being coupled to a respective one of the conductive paths; a plurality of multiplexers, wherein each of the multiplexers is coupled to a respective pair of terminals from the first and second sets, each of the multiplexers including a control terminal and respective input terminals coupled to respective ones of the external terminals of the first and second sets, each of the multiplexers being operable to couple either the respective external terminal of the first set or the respective external terminal of the second set to the electrical circuit; and a control circuit having an input coupled to one of the external terminals of the first set, the control circuit being operable to determine whether the external terminal to which it is coupled is active, and, at least partially in response thereto, to apply a signal to the control terminals of the multiplexers that cause the multiplexers to couple the external terminals of the first set or the external terminals of the second set to the electrical circuit, the control circuit being operable to determine whether the external terminal of the first set is active based on a voltage level to which the external terminal is biased.