1. A configurable integrated circuit (“IC”) comprising: a plurality of configurable logic circuits each for configurably performing a set of functions; and a plurality of configurable routing circuits for configurably routing signals to and from said configurable circuits; wherein a plurality of data registers are defined by the configurable routing circuits during a plurality of operational cycles of the configurable IC; wherein the configurable routing circuits comprise a plurality of configurable interconnect/storage circuits, each configurable interconnect/storage circuit (i) communicatively coupling circuits of the configurable IC when configured as an interconnect circuit and (ii) storing data when configured as a storage circuit, wherein an output of a first interconnect/storage circuit and an output of a second interconnect/storage circuit are connected to two inputs of a switching circuit to form a double-edge triggered flip flop.