Abstract: A control circuit to which a read requirement signal for data read of a memory and a burst length information signal for the read requirement are input controls a pull-up circuit so as to pull-up a data strobe signal if the read requirement signal is active. A mask signal is made to an unmask state if the data strobe signal is transferred from H-level to L-level. The mask signal is made to an unmask state if a repetition of the predetermined transfer of the data strobe signal is detected based on the burst length information signal. A postamble in the data strobe signal starts by the repetition of the transfer, and after the end of the postamble period, the data strobe signal is pulled-up to H-level.