SINGLE METAL PROGRAMMABILITY IN A CUSTOMIZABLE INTEGRATED CIRCUIT DEVICE

摘要

A customizable integrated circuit including a substrate, a plurality of logic units formed on the substrate and a plurality of metal routing layers formed on the substrate for interconnecting the plurality of logic units. The plurality of metal routing layers includes a first routing layer including a plurality of elongate conductors extending generally in a given direction, a second routing layer including a plurality of transversely extending conductors, each adapted for interconnecting a termination of one of the plurality of elongate conductors to a beginning of another one of the plurality of elongate conductors and at least a third routing layer, which includes a plurality of local routing conductors, a plurality of customizable connections between pairs of the plurality of elongate conductors via individual ones of the plurality of transversely extending conductors and customizable connections between individual ones of the elongate conductors and a plurality of individual ones of the local routing conductors.