| 摘要 |
PROBLEM TO BE SOLVED: To obtain a stable data output by preventing the data output by a reactive address in a hyper page mode by delaying the control signal of a data-line interruption circuit by using an address transition delay signal. SOLUTION: When an ATD senses address transition, a barϕATS is generated. The barϕATS controls an I/O sense amplifier while a delay signal bar ATSD is output by a second delay circuit. On the other hand, a control signalϕCD based on a string-address strobe signal bar CAS reaches HIGH after a fixed time when the barϕATS is returned from LOW to HIGH. TheϕCD and the barϕATSD are arithmetically operated by an AND gate 30, and a delay control signalϕCDD is output, and added to a data-line interruption circuit 10. Accordingly, a nonconductive state is kept in the interruption circuit 10 until data by an effective address signal appear in a data line DO and a bar DO, and a stable data output is acquired.
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