Semiconductor device
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United States of America Patent
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Dec 11, 2012
Grant Date -
Apr 28, 2011
app pub date -
Oct 21, 2010
filing date -
Oct 27, 2009
priority date (Note) -
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Abstract
A semiconductor device includes a plurality of first output terminals 1-13 and a plurality of first output circuits 203,204 provided corresponding to each of the plurality of first output terminals and coupled to a corresponding first output terminal. The semiconductor device further includes a second output circuit 201 coupled to a second output terminal DQS. The second output circuit automatically adjusts a slew rate based on the state transitions of the plurality of first output circuits. The second output circuit adjusts the slew rate from a first state to a second state based on a transition from first data outputted from the first output circuit to second data following said first data. The second output circuit outputs data in synchronization with the second data with a slew rate in said second state.
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