Circuit to control voltage ramp rate

Static information storage and retrieval – Floating gate – Particular biasing

Reexamination Certificate

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Details

C365S185190, C365S189060, C365S189090

Reexamination Certificate

active

07848151

ABSTRACT:
A programming circuit and method to apply a controlled or predetermined voltage pulse for charge transfer to or from the floating gate of a non-volatile memory cell in an incremental manner to control the overall voltage across the gate oxide. Voltage above a transfer threshold voltage, such as above a tunneling threshold voltage, is applied in a stepwise charge transfer manner to or from the floating gate up to a voltage limit that is below the thin oxide damage threshold. Controlling the overall voltage avoids oxide breakdown and enhances reliability.

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“U.S. Appl. No. 11/291,606, Notice Of Allowance Mailed On Nov. 17, 2008”, 9 Pgs.
“U.S. Appl. No. 11/291,606, Response filed Mar. 17, 2008 to Final Office Action mailed Jan. 16, 2008”, 14 pages.

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