Row decoder having global and local decoders in flash memory dev

Details Row decoder having global and local decoders in flash memory dev Row decoder having global and local decoders in flash memory dev

1998-12-30

2000-05-16

Nelms, David

Static information storage and retrieval

Addressing

Particular decoder or driver circuit

365226, 36518513, 36518533, G11C 800

Patent

active

060646233

ABSTRACT:
The present invention relates to a row decoder in a flash memory device; and, more particularly, to a row decoder having global and local row decoders to reduce a loading of the high voltage and a chip area. The row decoder according to the present invention comprises a plurality of global row decoders for generating a first control signal and a second control signal according to an operation mode of the flash memory, wherein each global row decoder produces a first voltage level from a first power supply and a second voltage level from a second power supply, which respectively correspond to the first and second control signals, in response to first and second addresses from a predecoder; and a plurality of local row decoders for selecting a word line selection signal in response to the first and second control signals, wherein each local row decoder produces a third voltage level from a third power supply and a fourth voltage level from a fourth power supply which receives a third address from the predecoder and wherein the first control signal is out of phase from the second control signal.

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patent: 5612913 (1997-03-01), Cappelletti et al.
patent: 5663923 (1997-09-01), Baitar et al.
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patent: 5886923 (1999-03-01), Hung
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