AVR-Chat

Do you specifically need features that the XMega's provide? If not, you
might consider the largely overlooked ATMega32u4 or one of the AT90U series,
which all have onboard USB. They are pretty slick parts. The only minor
issue with them is that neither of the two big parts suppliers to hobbyists
in the US, Digikey or Mouser, carry them. AVNet does, though, and they have
a better price to boot.

http://avnetexpress.avnet.com/store/em/EMController/Microcontroller/Atmel/ATMEGA32U4-AU/_/R-8738618/A-8738618/An-0?action=part&catalogId=500201&langId=-1&storeId=500201

<http://avnetexpress.avnet.com/store/em/EMController/Microcontroller/Atmel/ATMEGA32U4-AU/_/R-8738618/A-8738618/An-0?action=part&catalogId=500201&langId=-1&storeId=500201>Oh,
the only other issue may be that it isn't available in a DIP.Sounds like
that won't be an issue for your needs, but worth being aware of.

On Wed, Feb 3, 2010 at 5:51 PM, Dean Claxton <deanclaxton@gmail.com> wrote:

> Ok thanks guys,
>
> I too plan just to use it for internal storage - it would not be accessible
> to the end user without opening the case. Download would most likely me via
> USB, but it seems the the XMEGA's dont feature USB.
>
> Perhaps I should start looking at the AVR32 as the external memory bus
> would
> also allow the use of SRAM as an option.
>
> Dean
>
> On Wed, Feb 3, 2010 at 12:39 AM, Tim Mitchell <tim@sabretechnology.co.uk
> >wrote:
>
> > ----Original Message----
> > From: AVR-Chat@yahoogroups.com
> > [mailto:AVR-Chat@yahoogroups.com] On Behalf Of Dave
> > McLaughlin Sent: 02 February 2010 11:58 To:
> > AVR-Chat@yahoogroups.com Subject: RE: [AVR-Chat] Looking at
> > doing a datalogger using an XMEGA part - not sure which
> > storage technology to use
> >
> > > This all seems to be a grey area and there is no definite
> > > answer on their
> > > website. In fact, it is impossible to determine if you
> > > need this just to
> > > have the hardware present. I have no plans to show any
> > > kind of reference to
> > > SD in my product or even have external access to it and I
> > > can't find any
> > > information as to whether I need a license or not?
> >
> > They are trying to get you to join so I suppose it's not in their
> > interests to make it clear!!
> >
> > If you google a bit there seems to be a consensus that no license is
> > required if you use basic SPI to access the card as there is no patent
> > covering this. The license/patents appear to cover a proprietary method
> > of accessing the card. I have no way of verifying this information.
> >
> > I guess you have to decide if you are prepared to run the (small) risk
> > of them coming after you for possible patent infringement.
> >
> > --
> > Tim Mitchell
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>
>
> --
> Kind Regards
> Dean Claxton
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>


[Non-text portions of this message have been removed]