System for providing tight program/erase speeds that are insensi

Details System for providing tight program/erase speeds that are insensi System for providing tight program/erase speeds that are insensi

1996-09-30

1998-08-11

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Nonlinear amplifying circuit

327331, 327332, 330 86, 330282, H03K 326, H03G 312

Patent

active

057932492

ABSTRACT:
The system and method of enhancing the yield of flash memory circuit is disclosed. The method comprises performing a diagonal erase of a select group of memory cells on a wafer during sort. If the memory cells do not erase in a satisfactory manner, the control voltage applied to the memory cell is adjusted based on the memory cell's erase time. The circuitry for providing the adjustment voltage includes trimming circuitry for an incrementally increasing the applicable control of voltage.

REFERENCES:
patent: 4100437 (1978-07-01), Hoff, Jr.
patent: 4404525 (1983-09-01), Amir et al.
patent: 4791379 (1988-12-01), Hughes
IEEE Journal of Solid State Circuits, vol. SC-14, No. 6, Dec. 1979, "An Electrically-Programmably Switched Capacitor Filter" by Allstot et al., pp. 1034-1041.
"Electronic Circuits" published by McGraw-Hill, by Schilling et al., pp. 163-167, 1989.

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