Design of a high-density multiple-valued content-addressable memory based on floating-gate MOS devices

Takahiro Hanyu, Tatsuo Higuchi

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

A high-density, VLSI-oriented cellular associative memory for real-time numeric and nonnumeric computation is presented. Three kinds of basic search operations, which are parallel by word and serial by digit slice, are considered. A search word and memory words are encoded to several discrete values so that the number of digits to perform comparisons while searching can be greatly reduced. A multiple-valued down literal circuit of two variables, which is the basic building block for a compact content-addressable memory (CAM), can be implemented using a floating-gate MOS transistor whose threshold voltage is controllable by the external input signal. It is demonstrated that the number of transistors, cells, and interconnections between cells in an r-valued CAM are reduced to less than 1/log2r in comparison with the corresponding binary implementation.

Original languageEnglish
Pages (from-to)18-23
Number of pages6
JournalProceedings of The International Symposium on Multiple-Valued Logic
Publication statusPublished - 1990 Dec 1
EventProceedings of the 20th International Symposium on Multiple-Valued Logic - Charlotte, NC, USA
Duration: 1990 May 231990 May 25

ASJC Scopus subject areas

  • Computer Science(all)
  • Mathematics(all)

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