Electronic digital logic circuitry – Multifunctional or programmable – Array
Patent
1997-09-17
1999-01-12
Santamauro, Jon
Electronic digital logic circuitry
Multifunctional or programmable
Array
326 38, H03K 19177
Patent
active
058595430
ABSTRACT:
A programmable integrated circuit such as a field programmable gate array (see FIG. 3) has a few long routing wire segments for transmitting signals long distances across the integrated circuit. These long routing wire segments can be coupled together with programmed antifuses. A high-drive output driver may be used to drive signals a long distance through such coupled together long routing wire segments giving rise to large switching currents across the programmed antifuses that couple the long wire segments together. In some types of antifuses, programmed antifuse reliability is dependent upon maintaining the programming current used to program the antifuse a certain factor greater than the peak switching current flowing through the antifuse during normal operation. The antifuses in these long wire segments therefore should be programmed with proportionately larger programming currents. To increase the programming currents with which these antifuses are programmed, programming current is supplied onto each of the long routing segments from two different programming conductors via two different programming transistors.
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Le Don Phu
QuickLogic Corporation
Santamauro Jon
Wallace T. Lester
LandOfFree
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