[ivoras]

Hmm, does it really have only 16 KiB of RAM or am I misinterpreting the spec?

What would be the use case for a 320 MHz processor with 16 KiB RAM? Even ESP8266 has 80 KiB and runs at 80 MHz.

[SloopJon]

The only place I see that mentions 16 KB is the instruction cache on the S7 monitor core. Apart from cache, it doesn't look like any of these include RAM.

[crankylinuxuser]

That's fairly standard. The problem there is going to be attaching ddr3 modules to a board. BGA is a pain in the ass for anything past 10x10 using a toaster oven. And for doing it "right" you really need xray QA.