1. An integrated circuit (“IC”) comprising: a) a configurable circuit for configurably performing one of a plurality of operations based on configuration data; b) a plurality of storage circuits for storing a plurality of configuration data sets for the configurable circuit; c) an interconnect circuit for switchably connecting the configurable circuit to different sets of storage circuits to receive different sets of configuration data sets, said interconnect circuit comprising (i) a set of clocked storage circuits and (ii) a set of unclocked storage circuits for temporarily storing configuration data sets.