What is FPGA? What is FPGA?

FPGA is the abbreviation of the English Field Programmable gate array, the field programmable gate array, which is in the programmable array logical pal (programmable array Logic), Men logical gal (Gate array Logic), Programmable logic device PLD (programmable Logic Device) and other programmable devices based on the further development of the product. It appears as a semi-automatic circuit in the field of ASIC (creator specific integrated incrementally), not only solves the shortcoming of the custom circuit, but also overcomes the limitation of the original programmable device gate circuit number. FPGA can complete the function of any digital devices, up to the High-performance CPU, down to the simple 74 series circuit, can be implemented by FPGA.

FPGA is like a piece of white paper or a pile of building blocks, engineers can use the traditional schematic input method, or the hardware description language free design a digital system. Through software simulation, we can verify the correctness of the design in advance. After the completion of the PCB, you can also use the FPGA online modification capabilities, at any time to modify the design without changing the hardware circuit. Using FPGA to develop digital circuits can greatly shorten the design time, reduce the PCB area and improve the system's availability. PLD of these advantages make PLD technology in the 90 's after the rapid development, but also greatly promote the electronic design automation EDA (Electronic designs Automatic) software and hardware description Language VHDL (very-high-speed Integrated incrementally hardware Description) progress.