| 摘要 |
A semiconductor memory device includes a reference strobe signal generator configured to generate a reference strobe signal having a reference pulse width in response to a bank information signal and a column command signal, and a main strobe signal generator configured to generate a main strobe signal by controlling the reference pulse width in response to the reference strobe signal and a bank grouping signal that is activated in a bank grouping mode where columns are continuously accessed in a plurality of logically grouped banks.
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