Semiconductor memory device including nonvolatile memory cells, enhancement type load transistors, and peripheral circuits having enhancement type transistors

A semiconductor memory device comprises a non-volatile memory cell array (70) having a plurality of memory cells (71), enhancement type load transistors (73, 73') having a threshold voltage, and at least one peripheral circuit, such as level shifters (74), column decoders (76), etc., including...

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Hauptverfasser: UEMURA, TERUO, KAWASE, YUKIO
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description A semiconductor memory device comprises a non-volatile memory cell array (70) having a plurality of memory cells (71), enhancement type load transistors (73, 73') having a threshold voltage, and at least one peripheral circuit, such as level shifters (74), column decoders (76), etc., including enhancement type transistors having a threshold voltage. For increasing the writing speed of the memory cells (71), the threshold voltage of the enhancement type load transistors (73, 73') is set so that it is different from that of the enhancement type transistors of the peripheral circuit. For example, the threshold voltage of the enhancement type load transistors (73, 73') is lower than that of the enhancement type transistors of the peripheral circuit.
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language eng ; fre ; ger
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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
INFORMATION STORAGE
PHYSICS
SEMICONDUCTOR DEVICES
STATIC STORES
title Semiconductor memory device including nonvolatile memory cells, enhancement type load transistors, and peripheral circuits having enhancement type transistors
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