Cryoelectric hybrid system for very large random access memory

The recent introduction of structured cells characterized by no cell-to-cell interaction, adequate sense signal, and array tolerance under repetitive worse-case disturb evaluation and coincident current operation, has made possible new systems approaches. A coincident current "hybrid" (word-bit) system utilizing room temperature decoders and structured loop cell arrays was designed to satisfy the criteria pertinent to a very large random access cryoelectric memory. Besides offering the advantage of an early realization of a cryoelectric memory, compared to previous systems advanced, several other benefits are realized: 1) low electronics cost, especially in large systems sizes, 2) low heat load, and 3) potential plane yield improvement through redundancy techniques. Although a disadvantage is the large number of interconnections, analysis shows that the overall memory cost can be minimized through proper substrate design. The technology required by the hybrid system embodies present art, and very large random access cryoelectric memories employing hybrid organization and loop cell arrays appear to be feasible.