Title :
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
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;
Conference_Titel :
VLSI Circuits, 1992. Digest of Technical Papers., 1992 Symposium on
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-0701-1
DOI :
10.1109/VLSIC.1992.229289
