Static information storage and retrieval – Associative memories – Ferroelectric cell
Patent
1992-05-14
1995-02-07
LaRoche, Eugene R.
Static information storage and retrieval
Associative memories
Ferroelectric cell
365190, 36518901, 365154, 365185, G11C 1300
Patent
active
053880650
ABSTRACT:
A semiconductor integrated circuit is a CAM memory which comprises at least one memory cell including a first storage unit for defining the electrical connection and otherwise the non-connection between a first data line and a match line and a second storage unit for defining the electrical non-connection and otherwise the connection between a second data line and the match line, and a control word line for controlling said first and second storage units in the memory cell, the match line corresponding to at least one of the control word lines, the control word line being used to effect the connection and otherwise non-connection between each of said first and second data lines and the match line in accordance with the definition of connections of said first and second storage units. Moreover, the storage unit can be composed of a coupler of a nonvolatile memory element such as a MONOS-type nonvolatile memory element, PROM, EPROM EEPROM, UVEPROM and a like, and the memory cell further may include at least one selective transistor. The CAM memory comprises at least one of potential detecting means of defecting an electric potential of the match line, holding means for holding the result of detection in response to each control word line and preventing means for preventing the through current between the memory cells in conformity with and in nonconformity with the retrieval data.
REFERENCES:
patent: 3701980 (1972-10-01), Mundy
patent: 3750115 (1973-07-01), Mundy
patent: 3846766 (1974-11-01), Nojima et al.
patent: 5051948 (1991-09-01), Watabe et al.
Carlstedt, E. A., IEEE Journal of Solid-State Circuits, vol. 8, No. 5, Oct. 1973, New York US, pp. 338-343.
"Design of CMOS VLSI", pp. 167-169 and 176-177, Edited by Tetsuya IIzuka and Supervised by Takuo Sugano, Baifukan, 1989.
Hoang Huan
Kawasaki Steel Corporation
LaRoche Eugene R.
LandOfFree
Semiconductor integrated circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Semiconductor integrated circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor integrated circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1114870