A content-addressable memory using "switched diffusion analog memory with feedback circuit"

Tomochika Harada, Shigeo Sato

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

For the purpose of realizing a new intelligent system and its simplified VLSI implementation, we propose a new nonvolatile analog memory called "switched diffusion analog memory with feedback circuit (FBSDAM)." FBSDAM has linear writing and erasing characteristics. Therefore, FBSDAM is useful for memorizing an analog value exactly. We also propose a new analog content-addressable memory (CAM) which has neural-like learning and discriminating functions which discriminate whether an incoming pattern is an unknown pattern or a stored pattern. We design and fabricate the CAM using FBSDAM by means of the 4 μm double-poly single-metal CMOS process and nonvolatile analog memory technology which are developed by us. The chip size is 3.1mmx3.1mm. We estimate that the CAM is composed of 50 times fewer transistors and requires 70 times fewer calculation steps than a typical digital computer implemented using similar technology.

Original languageEnglish
Pages (from-to)370-377
Number of pages8
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
VolumeE82-A
Issue number2
Publication statusPublished - 1999 Jan 1

Keywords

  • Analog technology
  • Content-addressable memory
  • Nonvolatile analog memory
  • Recognition
  • S DAM

ASJC Scopus subject areas

  • Signal Processing
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering
  • Applied Mathematics

Fingerprint Dive into the research topics of 'A content-addressable memory using "switched diffusion analog memory with feedback circuit"'. Together they form a unique fingerprint.

Cite this