We're starting a new design, and I again find myself tempted by the
Microsemi SmartFusion2 as combination FPGA/uC. It's got a built-in ARM
Cortex-M3, which is a simple dinky micro instead of some big honking A8
application processor that you can't even get up and running without
kilobytes of boot code. The smallest, cheapest one is about $15 in
small quantity with 64 kB of data memory and and 128 kB of application
flash without having to touch the fabric resource. So, cute chip.
One of my concerns is field upgradability. There are a couple app notes
on implementing "Auto-Update Programming Recovery", which seems to be
what I'm looking for. You put down an external flash that holds your
"Golden Image" of what you shipped with, and then an "Upgrade Image" and
if the upgrade gets its wires crossed then it falls back. Or that's the
Anyone have any experience with these devices to share for good or ill?
Especially experience with the field upgrade mechanism.
5 years ago
-- Rob Gaddi, Highland Technology -- www.highlandtechnology.com Email address domain is currently out of order. See above to fix.