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A comment on Hands on with the First Open Source Microcontroller. Parent comment

Re:Hands on with the First Open Source Microcontroller by ajross on Friday January 06, 2017 @01:13AM (#13334342)
It's open source logic design, not semiconductor process. The SRAM for memory and caches is almost certainly fab-supplied too, as are the specific gate layouts, PLLs, etc... All that stuff is going to be secret sauce NDA'd IP specific to the process they were using (FWIW: does anyone know what/whose process that is?). Flash isn't fundamentally any different.

Presumably they just didn't want to devote engineering time to something nonessential for the first project.

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Re:Hands on with the First Open Source Microcontroller by mattthebaker on Friday January 06, 2017 @03:10PM (#13339756)
Really Flash is more worse than memory, caches, standard cells, PLLs, etc -- it requires significant process additions to fabricate the floating gate, as well as modifications to support high voltages, circuits for high voltage (charge pumps).
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Re:Hands on with the First Open Source Microcontroller by baobrien on Friday January 06, 2017 @11:13AM (#13337426)
The FE310-G000 is TSMC CL018G 180nm
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Re:Hands on with the First Open Source Microcontroller by ajross on Friday January 06, 2017 @11:57AM (#13337871)
Cool thanks. In which case I wonder if flash is even available on that process. Were 180nm parts doing mixed flash and logic ever?
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