Nonvolatile semiconductor storage device

Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode

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257315, 257321, 365184, 36518511, 36518512, 36518523, H01L 29788, G11C 1134

Patent

active

056524501

ABSTRACT:
According to the present invention, a nonvolatile semiconductor storage device for applying to each word line either one of a selected voltage and a non-selected voltage, corresponding to a selection state and a non-selection state, respectively, is provided. The selection state or the non-selection state is selected in accordance with an address signal in each operational mode. The nonvolatile semiconductor storage device includes: a plurality of applied voltage decoders operating in accordance with an applied voltage selection state or an applied voltage non-selection state, a plurality of control voltage decoders, each of the control voltage decoders outputting a control voltage corresponding to either a control voltage selection state or a control voltage non-selection state and a plurality of driver circuits, each of the driver circuits being provided so as to correspond to each word line; receiving a first applied voltage, a second applied voltage and a control voltage which are output from a distinct combination of an applied voltage decoder and a control voltage decoder.

REFERENCES:
Tanaka et al., "Flash memory with negative voltage scheme" Technical Report of Institute of Electronics, Information and Communication Engineers in Japan, ICD91-135 (1991) pp. 9-14.

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