Semiconductor integrated circuit
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United States of America Patent
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Dec 25, 1990
Grant Date -
N/A
app pub date -
Apr 11, 1989
filing date -
Apr 15, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A semiconductor integrated circuit comprises an internal data bus, a first holding part for entering and holding data which are obtained from outside the semiconductor integrated circuit via the internal data bus, a reading part for reading out the data held in the first holding part and for outputting the read out data to the internal data bus, a second holding part for entering and holding the data which is read out by the reading part via the internal data bus, a third holding part for entering and holding test data which are obtained from outside the semiconductor integrated circuit bia the internal data bus, a discriminating part for comparing the data held in the second and third holding part and for obtaining a discrimination result based on whether the compared data coincide, and an output part for outputtting the discrimination result of the discrimination part of the outside of the semiconductor integrated circuit.
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