Lattice FPGA iCE40LP1K-CM49, iCE40 LP 1280 Cells, 64kbit, 160 Blocks, 49-Pin UCBGA

An FPGA is a semiconductor device consisting of a matrix of Configurable Logic Blocks (CLBs) connected through programmable interconnects. The user determines these interconnections by programming SRAM. A CLB can be simple (AND, OR gates, etc) or complex (a block of RAM). The FPGA allows changes to be made to a design even after the device is soldered into a PCB.