The antifuse technology, routing architecture, logic mod- ule, design automation, programming, testing and use of ACTTM antifuse FPGA ‘s are described. FPGA Architectures Overview. In this short article we discuss modern FPGA architectures (SRAM-based, flash-based, antifuse- based) and their applications. Imperial College, Digital System Design. Actel FPGAs. ◇ Uses antifuse technology. ◇ Based on channelled gate array architecture as shown below.
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The insulation of the antifuse wire withstands the ordinary low voltage imposed across a functioning lamp but rapidly breaks down under the full mains voltage, giving the antifuse action. Each bit contains both a fuse and an antifuse and is programmed by triggering one of the two.
Zener diodes can be used as antifuses. When the failed lamp was finally changed, a new piece of film was also installed, once again separating the electrical contacts in the cutout.
Certain programmable logic devices PLDssuch as structured ASICsuse antifuse technology to configure logic circuits and create a customized design from a standard IC design. Retrieved from ” https: Zener zap is frequently employed in mixed-signal circuits for trimming values of analog components.
Antifuses may be used in programmable read-only memory PROM. QuickLogic Corporation refers to their antifuses as “ViaLinks” because blown fuses create a connection between two crossing layers of wiring on the chip in the same dpga that a via on anrifuse printed circuit board creates a connection between copper layers.
Formation of the conductive channel is performed by a dielectric breakdown forced by a high voltage pulse. This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Amorphous silicon is a material usually not used in either bipolar or CMOS processes and requires an additional manufacturing step. The p-n junction that serves as such diode is overloaded with a current spike and overheated.
antifuse Definition from PC Magazine Encyclopedia
The antifuse is usually triggered using an approximately 5 mA current. This page was last edited on 7 Julyat Unsourced material may be challenged fpya removed. This technology has many applications. Antifuses are best known for their use in mini-light or miniature style low-voltage Christmas tree lights. Also circuits built via the antifuse’s permanent conductive paths may be faster than similar circuits implemented in PLDs using Antfiuse technology.
A specialized structure optimized for the purpose can be employed where the antifuse is an integral part of the design. One approach for the ICs that use antifuse technology employs a thin barrier of non-conducting amorphous silicon between two metal conductors.
It is therefore necessary to shift the manufacturing tolerances so that the lowest-value typically made is equal to antifusf larger than the desired value.
The resulting resistance of the junction is in the range of 10 ohms.
Antifuse – Wikipedia
From Wikipedia, the free encyclopedia. May Learn how and when to remove this template message. They may be less susceptible to alpha particles which can cause circuits to malfunction. In this way, the failed lamp was bypassed and illumination restored to the rest of the street. By this antufuse, it is possible only to lower the value of the resulting resistor.
Unlike Christmas lights, the circuit usually contained an automatic device to regulate the electric current flowing in the circuit, preventing the current from rising as additional lamps burned out.
The antifuse is made using wire with a high resistance coating and this wire is coiled over the two vertical filament support wires inside the bulb. A pfga NPN transistor structure is often used in common bipolar processes as the antifuse. Antifuses are widely used to permanently program integrated circuits ICs.
Occasionally, the insulation fails to break down on its own, but tapping the blown lamp will usually finish the job.