Thanks for all your thoughts.

I nearly opted for the AT91SAM3X8E as used in the Arduino Due, but that=20
runs at 3.3v whereas all my prototype peripherals are 5v. So I've=20
decided to just increase the amount of flash program memory from 32k=20
(Uno) to 256k (Mega 2560), and keep all the peripheral hardware=20
unchanged. Now I can finish the demo project without having to re-write=20
any more code libraries :)

Matt


On 14/04/15 13:57, Isaac Marino Bavaresco wrote:
> My experience with Atmel's ATSAM3 family together with ASF (Application
> Software Framework) is very positive.
> I designed a board with the ATSAM3A8C and an SD-Card slot, then adapted
> an example project from ASF. It worked the first try.
>
> The ATSAM3 family has hardware 4-bit MCI interface, which allows for the
> highest possible transfer rate, together with the large RAM (128KiB) and
> high clock (84MHz) is excellent for your application.
> The High-Speed USB interface is another plus for a data-logging equipment=
..
>
> The RTC code is trivial and you should not worry about.
>
> Isaac

--=20
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