FPGA stands for Field Programmable Gate Array. They are small semiconductor logic chips are known as integrated circuits or ICs for short. FPGAs are built from one basic logic cell, duplicated hundreds of times.

What do they consist of?

They consist of a configurable logic block, programmable switch matrix, I/O blocks and Interconnects.

Configurable Logic Block

CLB consist of lookup tables (LUTs), flip flops and multiplexers. They are used to implement complex design functions and synchronise the code on the FPGA.

Programmable Switch Matrix

A programmable switch matrix (PSM) is used to control the interconnections between the configurable logic blocks and the input/output blocks. The programmable switch matrix connects each block according to the program code and has switch elements that have six pass transistors inside.

I/O Blocks

I/O blocks are pins that can be programmed as an input pin, output pins or both


Interconnects carry signals via wires to connect inputs and outputs to logic blocks.

How do FPGAs differ from CPLDs?

The main differences between the two devices is how they are made up. A CPLD device is very restricted in structure so they are less flexible. FPGAs on the other hand have a very high logic capacity and can be easily programmed to carry out any kind of digital function.

FPGA Applications

They are found in many applications such as radar systems, military hardware, medical devices and telecommunication technology. Their reprogrammable nature means FPGAs are suitable for a wide range of solutions. They can be any digital circuit, depending on the number of logic blocks it contains. Engineers often use FPGAs in prototype development and specially designed integrated circuits (ICs).

RS Components offer a range of high-quality devices from leading brands including Xilinx, Altera and Lattice Semiconductor. Our devices are available in industry standard package types, pin counts and mounting types to suit all your electronic design needs.

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Description Price Family Name Number of Logic Gates Number of Logic Cells Number of Logic Units Dedicated DSP Number of Registers Number of Multipliers Package Type Pin Count Number of RAM Bits Dimensions Height Length Maximum Operating Supply Voltage
RS Stock No. 170-2984
Mfr. Part No.EP4CE6F17C8LN
Each (In a Tray of 90)
Cyclone 6272 6272 392 Yes - 360 (18 x 18) FBGA 256 276480 - - 17mm 1.03 V
RS Stock No. 921-3570
Mfr. Part No.5CSEMA6F31C8N
Each (In a Tray of 27)
Cyclone V SE 110000 110000 41509 Yes 166036 224 (18 x 18) FBGA 896 5761K - - 31mm 3.3 V
RS Stock No. 169-5744
Mfr. Part No.EP3C16F484C8N
Each (In a Tray of 60)
Cyclone III - 15408 15408 - - 56 (18 x 18) FBGA 484 - 23 x 23 x 2.2mm 2.2mm 23mm 1.25 V
RS Stock No. 168-4224
Mfr. Part No.ICE40LP1K-CM49
Each (In a Tray of 490)
ICE40 LP - 1280 160 - 1280 - UCBGA 49 64kbit 3 x 3 x 0.9mm 0.9mm 3mm 1.26 V
RS Stock No. 173-2070
Mfr. Part No.XC3S50AN-4TQG144C
Each (In a Tray of 60)
Spartan-3AN 50000 1584 1584 - - 3 (18 x 18) TQFP 144 11264bit 20 x 20 x 1.4mm 1.4mm 20mm 1.26 V
RS Stock No. 169-5508
Mfr. Part No.EP2C5Q208C8N
Each (In a Tray of 24)
Cyclone II - 4608 4608 - - 13 (18 x 18) PQFP 208 - 28 x 28 x 3.4mm 3.4mm 28mm 1.25 V
RS Stock No. 790-7046
Mfr. Part No.5AGXMA1D6F31C6N
Arria V - 75000 - Yes 13208 480 (18 x 18) FBGA 896 463 kbit, 8000 kbit 31 x 31 x 2mm 2mm 31mm 1.13 V
RS Stock No. 168-4222
Mfr. Part No.ICE40HX4K-TQ144
Each (In a Tray of 60)
ICE40 HX - 3520 440 - 3520 - TQFP 144 80kbit 20 x 20 x 1.45mm 1.45mm 20mm 1.26 V
RS Stock No. 790-7030
Mfr. Part No.5AGXBA7D6F31C6N
Arria V - 242000 - Yes 366720 1600 (18 x 18) FBGA 896 1448 kbit, 13660 kbit 31 x 31 x 2mm 2mm 31mm 1.13 V