Antifuse reroute of dies

摘要

A circuit is provided with a programmable switching matrix incorporating at least one antifuse to selectively route signal paths. The selective routing of signal paths may be used for example, to internally reroute contact pin assignments on semiconductor chips to operate in a plurality of different socket layouts, or to selectively enable or disable features or controls of a circuit. A further alternative involves programming a first chip, then stacking piggyback, or one on top of the other, the first chip onto a second chip. The contact pins are electrically coupled together, thus avoiding the need for external frames and pin rerouting schemes to form stacked chips. In the stacked chip configuration, control pins are rerouted to align with unused pins on the chip stacked therewith.