1. An integrated circuit (“IC”) comprising: a configurable circuit for configurably performing one of a plurality of operations based on configuration data; a plurality of storage circuits for storing a plurality of configuration data sets for the configurable circuit; and an interconnect circuit for switchably connecting the configurable circuit to different sets of storage circuits to receive different configuration data sets, said interconnect circuit comprising a set of half-swing clock latches for temporarily storing configuration data sets, wherein the set of half-swing clock latches comprises a transistor that receives a half-swing clock signal with a voltage swing that is a fraction of a voltage difference between a supply voltage and a ground voltage for the interconnect circuit.