1. A programmable logic device comprising: a logic block unit including a plurality of logic blocks which are programmably connectable and perform a logical operation on an input data stream; and a configuration control circuit configured to control a logical operation configuration of the plurality of logic blocks in response to configuration information, wherein the configuration control circuit controls the logical operation configuration of the plurality of logic blocks based on first configuration information for a logical operation of a first input data stream included in the input data stream, receives second configuration information for a logical operation of a second input data stream included in the input data stream, while the first input data stream is supplied to the logic block unit, and controls a logical operation configuration of the second data stream based on the second configuration information in response to termination of the logical operation of the first input data stream.