A small Tutorial on FPGA

FPGA are a special form of Programmable logic devices(PLDs) with higher densities as compared to custom ICs and capable of implementing functionality in a short period of time using computer aided design (CAD) software.

This tutorial gives you a grounding on the basics of FPGA architecture and the requirements that FPGAs address.

Field Programmable Gate Arrays are two dimensional array of logic blocks and flip-flops with a electrically programmable interconnections between logic blocks.

The interconnections consist of electrically programmable switches which is why FPGA differs from Custom ICs, as Custom IC is programmed using integrated circuit fabrication technology to form metal interconnections between logic blocks.