Static content addressable memory cell

Details Static content addressable memory cell Static content addressable memory cell

2007-09-11

2007-09-11

Nguyen, Viet Q. (Department: 2827)

Static information storage and retrieval

Associative memories

Ferroelectric cell

C365S149000, C365S189050, C365S154000, C365S056000

Reexamination Certificate

active

11331889

ABSTRACT:
A static content addressable memory (CAM) cell. The CAM cell includes a latch having complementary data nodes capacitively coupled to ground, first and second access transistors, each coupled between a data node of the latch and a respective data line. The gates of each access transistor is coupled to a word line such that when activated, the respective data node and data line are coupled. The CAM cell further includes a match circuit coupled to one of the complementary data nodes of the latch. The match circuit discharges a match line in response to a data value stored at the data node to which the match circuit is coupled and compare data present on the respective data line mismatching. Two of the CAM cells can be used to implement a full ternary CAM cell.

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