A semiconductor integrated circuit includes a reconfigurable circuit including a plurality of computing units interconnected in a reconfigurable manner, a processing circuit including at least one of a fixed logic circuit configured to perform predetermined processing and a parameter-defined special-purpose hardware unit configured to change processing specifications according to parameter settings, a network having reconfigurable connections and coupled to the reconfigurable circuit and to the processing circuit, and at least two interfaces each coupled to the network to provide external coupling for the network.