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Patent Searching and Data


Title:
DIFFERENTIAL FLOATING GATE CIRCUIT AND METHOD FOR PROGRAMMING
Document Type and Number:
WIPO Patent Application WO2004075260
Kind Code:
A3
Abstract:
A method and circuit for programming a floating gate in a differential floating gate circuit to an input set voltage. The circuit includes a differential amplifier circuit for comparing the voltage on a floating gate with an input set voltage, and a gain stage for amplifying any voltage differential between those two voltages. During a set mode, an erase and a program tunnel device operate in a dual conduction mode for modifying the voltage on the floating gate. The output at the gain stage is used to modify the voltage across the erase tunnel device via a feedback loop until the differential floating gate circuit settles to a steady state condition such that the floating gate voltage is approximately equal to the input set voltage. Thereafter, during a read mode, the differential floating gate circuit may be reconfigured to preferably function as a voltage comparator with a built-in voltage reference.

Inventors:
OWEN WILLIAM (US)
Application Number:
PCT/US2004/003936
Publication Date:
February 03, 2005
Filing Date:
February 10, 2004
Export Citation:
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Assignee:
XICOR INC (US)
OWEN WILLIAM (US)
International Classes:
G11C16/34; G11C27/00; (IPC1-7): G11C11/34
Foreign References:
US5253196A1993-10-12
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