Apparatus and method for programming field programmable arrays

Details Apparatus and method for programming field programmable arrays Apparatus and method for programming field programmable arrays

1994-08-01

1996-01-16

Westin, Edward P.

Electronic digital logic circuitry

Multifunctional or programmable

Having details of setting or programming of interconnections...

326 39, 327525, 437172, H03K 19173, H01H 3776

Patent

active

054851050

ABSTRACT:
The described embodiments of the present invention provide an apparatus and method for rapidly programming field programmable devices. A dummy antifuse is provided on the field programmable device for testing prior to actual programming. The current drawn by the device is measured by the programming apparatus until an adequate soaking current is measured while programming the test antifuse. The programming apparatus then records the time required this current level and selects that time as the programming period T.sub.p. This programming time T.sub.p is then used to program the entire device. T.sub.p is now the minimum time required given the process variations of this particular device to adequately program the antifuses which must be blown.

REFERENCES:
patent: 5008855 (1991-04-01), Eltouhky et al.
patent: 5130777 (1992-07-01), Galbraith et al.
patent: 5194759 (1993-03-01), El-Ayat et al.
patent: 5371414 (1994-12-01), Galbraith
Texas Instruments FPGA Data Manual, "Action Logic System Overview," pp. 3-4, 3-5, 3-9, 3-10, 3-23, 4-3 through 4-36, and 5-4, 1993.

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