What are FPGAs?
FPGA stands for Field Programmable Gate Array. They are small semiconductor logic chips 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 pins, output pins or both.
Interconnects carry signals via wires to connect inputs and outputs to logic blocks.
Features and Benefits
FPGA functionality can easily be developed upon every power-up of the device. Design engineers can enable changes by downloading new software configuration files into the device and test the changes.
How do FPGAs differ from CPLDs?
CPLDs stand for complex programmable logic devices. They are used to implement complex combinational or sequential circuits. They are made up of logic array blocks, programmable interconnects and I/O blocks.
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 are able to be any digital circuit, depending on the number of logic blocks it contains. Engineers often use FPGAs in prototype development and specialise designed integrated circuits (ICs).

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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. 168-4220
Mfr. Part No.ICE40HX1K-VQ100
Each (In a Bag of 90)
iCE40 HX - 1280 160 - 1280 - VQFP 100 64kbit 14 x 14 x 1.05mm 1.05mm 14mm 1.26 V
RS Stock No. 168-4225
Mfr. Part No.ICE40LP1K-QN84
Each (In a Bag of 260)
iCE40 LP - 1280 160 - 1280 - QFN 84 64kbit 7 x 7 x 0.9mm 0.9mm 7mm 1.26 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. 168-4223
Mfr. Part No.ICE40HX8K-CB132
Each (In a Tray of 348)
iCE40 HX - 7680 960 - 7680 - csBGA 132 128kbit 8 x 8 x 1.1mm 1.1mm 8mm 1.26 V
RS Stock No. 168-4080
Mfr. Part No.LFE2-12E-5TN144C
Each (In a Bag of 60)
ECP2 - 12000 12000 Yes - 24 (18 x 18) TQFP 144 24576bit 20 x 20 x 1.4mm 1.4mm 20mm 1.26 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