| 摘要 |
When a plurality of commands are received in succession to read/write data from/to memory cells in accordance with the combination of these commands, a word line for controlling the transfer switches of the memory cells are activated after the reception of one of the commands excluding the first command. This allows control circuits for activating the word lines to be operated at a lower frequency than heretofore, with a reduction in power consumption. Moreover, the word lines are activated based on an address signal that is supplied along with the first command as well as a part of an address signal supplied along with one of the commands excluding the first command. Consequently, the memory region to be selected by these address signals can be smaller, with a reduction in power consumption.
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