Semiconductor integrated circuit device and noncontact IC card

摘要: The present invention is directed to shorten time required establish a connection and enable information be actually transmitted/received in noncontact IC card adaptable plurality of communication methods. A semiconductor integrated circuit device the includes: single demodulating capable an input signal; sampling circuits each output signals synchronously with predetermined clock detection detecting headers corresponding circuits; processing performing data process on basis results method determining match preset from header by circuits. By processes adapted different methods parallel, reduced.