2 years ago
don't have much in the way of requirments yet, but I'd like to have at lea
st 2000 LUTs, 39 I/Os or more, but most importantly a board layout friendly
package. That means no BGAs and no CSPs. The board features are just too
small with those.
This design is offloading some functionality from an MCU that can easily be
done, but it seems FPGAs are treated as hardware including the code to pro
gram them with. So a few critical functions might be done this way includi
ng a PID controller.
I'm a fan of Lattice because of their smaller parts. The various lines don
't have much in QFP or QFN packages though other than the iCE40 line. They
have three Ultra parts from 1, 2 and 3.5 kLUTs and the Ultra Plus 5 kLUT p
art, all in a 48 pin QFP.
There is a 4.3 kLUT XO3D in a 72 pin QFN package and the XO2 device is avai
lable in a couple of different packages. But they are pricey at $10 and up
Any devices from other makers that are similar to these in low hassle packa
-- Rick C. - Get 1,000 miles of free Supercharging