Semiconductor memory device having scan flip-flops
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United States of America Patent
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May 22, 2001
Grant Date -
N/A
app pub date -
Jun 3, 1998
filing date -
Nov 7, 1997
priority date (Note) -
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Abstract
A semiconductor memory device includes a plurality of scan flip-flops connected in series for storing parallel data externally provided in a normal operation mode and for storing serial data externally provided in a scan mode by shifting the serial data. The semiconductor memory device further includes a control circuit which controls the plurality of scan flip-flops to refrain from shifting the serial data when data-read operations and data-write operations are conducted in the scan mode.
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