The Chip That Made Hardware Rewriteable

2026-04-28 · Source: IEEE Spectrum · Field: Technology & Digital — Semiconductor Design & Hardware Architecture, Emerging Technologies & Innovation, Artificial Intelligence & Machine Learning · Depth: Intermediate, medium

Summary

The IEEE Milestone plaque recognizing the first Field-Programmable Gate Array (FPGA) was dedicated on March 12 at the Advanced Micro Devices campus in San Jose, Calif., honoring a technology that allows internal hardware circuits to be reconfigured after manufacturing. Invented by Ross Freeman at Xilinx in 1984 and commercially released as the XC2064 in 1985, FPGAs addressed a critical limitation in computing by offering a "sweet spot" between flexible but slow microprocessors and highly efficient but costly Application-Specific Integrated Circuits (ASICs). The XC2064 featured 64 configurable logic blocks in an 8x8 grid, fabricated using a 2-micrometer process. This innovation dramatically reduced semiconductor development risk and accelerated innovation, enabling engineers to redesign hardware repeatedly without fabricating new chips. FPGAs are now essential infrastructure, complementing CPUs and GPUs in heterogeneous computing systems, and are used for prototyping ASICs and validating complex systems.

Key takeaway

For hardware engineers or research scientists designing systems with evolving requirements or moderate production volumes, FPGAs offer a crucial balance between performance and adaptability. You should consider FPGAs to accelerate development cycles, reduce nonrecurring engineering costs, and enable rapid iteration of hardware designs, complementing traditional CPUs and GPUs in heterogeneous computing architectures.

Key insights

FPGAs introduced reconfigurable hardware, enabling iterative design and bridging the gap between flexible software and efficient custom silicon.

Principles

• Hardware flexibility can outweigh perfect efficiency.
• Programmable memory enables hardware-level speed with software adaptability.
• Iterative hardware design accelerates innovation and reduces risk.

Method

Engineers describe hardware behavior digitally, compile the design into a bitstream, and then load this configuration onto the FPGA's programmable logic blocks and wiring.

In practice

• Prototype ASICs and validate complex systems.
• Deploy specialized products in modest volumes.
• Experiment with advanced architectures rapidly.

Topics

• Field-Programmable Gate Arrays
• Semiconductor Design
• Reconfigurable Hardware
• ASIC Prototyping
• Heterogeneous Computing
• Hardware Innovation

Best for: AI Hardware Engineer, Research Scientist, Software Engineer

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Editorial summary, takeaway, and curation by AIssential. Original article published by IEEE Spectrum.