A20 vs A20-H

[yanko]

Hi everyone - I'm working on my own board based on the Olimex A20 board. It's fairly similar but I cut off a lot of components/functionalities I don't need.

It seems like the Allwinner chips are fairly unknown/undocumented and I can't seem to find the difference between the regular A20 and the A20-H I found on LCSC (link).

Does anyone know the difference? thanks

[LubOlimex]

There is no difference just change in naming convention. Allwinner changed the labelling. New batches of A20 chips that we ordered came with the A20-H marking too.

It is the same for A64 chips which are now labelled as A64-H.

[yanko]

Good to know, thanks! Also, I don't understand a specific symbol in the schematic. Can I ask here or should I open a new topic?

[LubOlimex]

Which schematic? Which symbol?