| 摘要 |
A row control circuit includes a selector for outputting, as a signal ZRXTRSTD, either signal INTSIG or ZRXTRST in accordance with a test signal TEST, and a holding circuit for receiving a signal ZRXTS by an input A, receiving the signal ZRXTRSTD by an input B, and outputting a word line activating signal RXT from an output node OUT. In a test mode, the phase relation of a sense amplifier activating signal S0N and the word line active signal RXT is set to be different from that in a normal mode. Consequently, a margin of a timing of reading operation or restoring operation can be evaluated.
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