Semiconductor circuit capable of storing a plurality of analog o

Details Semiconductor circuit capable of storing a plurality of analog o Semiconductor circuit capable of storing a plurality of analog o

1998-02-05

2000-01-04

Nelms, David

Static information storage and retrieval

Floating gate

Multiple values

3651852, 36518522, G11C 1134

Patent

active

060117141

ABSTRACT:
A semiconductor circuit assembly is capable of accurately storing a plurality of analog or multi-valued data using circuitry having a small surface area. The circuit assembly includes a first circuit provided in the form of a target memory cell device comprising memory cells which conduct the writing and storage of analog signals. The first circuit has output terminals for outputting stored values to the exterior as voltage signals. Mechanisms supply at least two index voltages. A second circuit performs the function of halting the writing of the analog signals when the output signal at the first circuit output terminals reaches a value representing a desired voltage plus the difference between the two index voltages.

REFERENCES:
patent: 5712815 (1998-01-01), Bill et al.
patent: 5768184 (1998-06-01), Hayashi et al.

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