Content addressable memory device
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United States of America Patent
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Sep 24, 1991
Grant Date -
N/A
app pub date -
Oct 20, 1989
filing date -
Feb 23, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a content addressable memory (CAM) cell according to the present invention, a pair of non-volatile memory transistors hold data, whereby stored data will not disappear even if power is cut. Conducting terminals of these non-volatile transistors are connected to a bit line pair, so that the stored data can be directly read out from the bit line pair. Further, the invention CAM system converts the value of a current flowing in a match line into a voltage value to perform content reference, and hence the same can be employed as an associative memory system.
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