Static information storage and retrieval – Floating gate – Particular biasing
Patent
1995-12-01
1997-10-21
Nelms, David C.
Static information storage and retrieval
Floating gate
Particular biasing
36518533, 36518529, 327538, 327543, G11C 1134
Patent
active
056803486
ABSTRACT:
A system and method for providing a constant electric field that is insensitive to fluctuations in the power supply to a FLASH EPROM during erasure. The system comprises a plurality of sector source drivers and a power supply insensitive constant current source. Each sector has at least one binary storage element. Each storage element has a source. The sector source drivers couple the at least one source of a sector to be erased to the power supply insensitive constant current source. The power supply insensitive constant current source provides an electric field across the tunneling oxide which is constant and insensitive to fluctuations in the power supply. This improves the wear characteristics and lifetime of the binary storage elements. In addition, this system remedies problems associated with short channel effects, electron trapping, and the use of various voltage sources.
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Chung Michael
Yu James
Advanced Micro Devices , Inc.
Mai Son
Nelms David C.
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