A 1 Mbit NAND-type content addressable ROM with a variable length match function

Author

Yoneda, M. ; Sasama, H. ; Hayashibara, I. ; Kanazawa, N.

Author_Institution

Kawasaki Steel Corp., Chiba, Japan

fYear

1992

fDate

4-6 June 1992

Firstpage

86

Lastpage

87

Abstract

A 1-Mb content addressable ROM (CAROM) with a variable-length match function is proposed. The device has four new characteristics: the operational mode, the modified NAND-type memory cell, the simple AND-logic circuit (ALC), and the improved serial priority encoder circuit. Large capacity and high retrieval performance are achieved by these new characteristics. Simulation confirms that the retrieval cycle type is 60 ns/page and the encoding cycle time is 50 ns. The circuit is designed with a 1.0- mu m single-poly double-metal CMOS process.<>

Keywords

CMOS integrated circuits; NAND circuits; content-addressable storage; integrated memory circuits; read-only storage; 1 Mbit; AND-logic circuit; CAM; NAND-type; content addressable ROM; double-metal CMOS; modified NAND-type memory cell; serial priority encoder circuit; single-poly; variable length match function; Automatic logic units; CADCAM; Circuits; Computer aided manufacturing; Decoding; Information retrieval; Product design; Product development; Random access memory; Read only memory;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Circuits, 1992. Digest of Technical Papers., 1992 Symposium on

Conference_Location

Seattle, WA, USA

Print_ISBN

0-7803-0701-1

Type

conf

DOI

10.1109/VLSIC.1992.229289

Filename

229289