And here we’ve been complaining about Flat Pack No-Lead chips when this guy is prototyping with Ball Grid Array in a Wafer-Level Chip Scale Package ... This image shows those connections ...
Global Ball Grid Array Package Market Research Report: By Type, Application, Material, End Use, Regional ...
With FPGA packages exceeding 1,000 pins, with Ball Grid Array (BGA) solder bumps providing the interconnect, it is vitally important to make solid contact with the Printed Circuit Board (PCB).