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Computer-aided design of switching core driven memory systems

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1 Author(s)
J. Kawasaki ; Hitachi Ltd., Tokyo, Japan

A method for computer-aided design (CAD) of switching core driven memory systems is reported in this paper. The design criterion is based on the resetting operation for the flux in a switching core. The relations between this criterion and the driving current value, the duration of driving pulse current, and the load variation depending on memory information pattern are quantitatively investigated. In addition, a method for calculating the maximum driving capacity based on the linear equivalent circuit has been developed. Based on these results of investigation, a CAD system for calculating the operating margin, operating speed (the cycle time), and storage capacity has been achieved. This CAD system can be widely utilized for designing highly reliable core memories, twistor type ROM, etc.

Published in:

IEEE Transactions on Magnetics  (Volume:8 ,  Issue: 3 )