単一電源で動作するCMROMの構成法と直流動作特性

概要

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A content-addressable memory (CAM) is crucial for data management and pattern recognition applications. This paper describes a new configuration of a content-addressable and mask-programmable ROM (CMROM) for fixed-data applications like dictionaries. The CMROM can be operated by a single power supply. Each cell of the CMROM consists of two MOS transistors, two bit lines, one word line and one interrogate line. The cell can be read as a conventional ROM or as a CAM. Thus, the CMROM can act as a CAM and at the same time as a ROM. As a CAM certain bits can be masked out, i.e., not compared with the stored bits. The static operating characteristics (reading and interrogation) of the memory are also analyzed in detail. The theoretical results are in good agreement with simulated results using the computer circuit analysis program HSPICE.
東海大学の論文