Need to migrate from the soon-to-b-obsolete EP1C3T100C6N (Cyclone ) device to a newer one - please suggest how do I do it.

We've had the EP1C3 (which BTW is a Cyclone 1 part) in a design from 2009, and the high price made us migrate to the new Cyclone 10 10CL006. This is in a BGA package, so your production will get more expensive for two reasons: You will have to place capacitors on the back of the board, and the design rules of the board will have to be a little more high-tech: You'll need 5 mil trace/space and 0.2mm smallest drill for vias that fit in between the pads of the 256-ball BGA.

The number of logic cells is about twice as much, so your old design will easily fit.

The price of the 10CL006 is far below what brokers charge for the EP1C3 today. We did have some trouble due to missing and/or inaccurate documents about the Cyclone 10 series, but got the design working. Only drawback is that the re-configurable PLLs are not described in detail, but since the Cyclone 1 did not have that, you won't run into that problem.

greetings from Germany,

Jens