-----Original Message-----
From: Larsen, Morten ActeNO [mailto:morten.larsen@...]
Sent: Friday, June 04, 2004 12:36 PM
To: 'lpc2000@yahoogroups.com'
Subject: RE: [lpc2000] Re: interesting info from Atmel / STM / Analog devi cesRgd. Atmel AT91 packaging -
there's a new selection guide (SAM - "Smart ARM Microcontroller")
on the AT91 website (http://at91.com) showing several new,
small devices (32-356KB internal Flash).
The smallest one (AT91SAM7S32) comes in a LQFP48(=TQFP48?) package.
That is, on par w. Phillips - so they *are* probably watching ...;-)PS: what "Smart" stands for is not yet revealed,
but my guess is that it will be possible to program the
Flash through the USB client port (like on their bigger ARM9 - AT91RM9200).
Nifty ...PS,PS: just curious - could you give a "Real-Worl" example
of an appliction for an 8-pin ARM7, where a 8-bit MCU wouldn't do??-Morten
> -----Original Message-----
> From: Matthias Weingart [mailto:lpc2000@...]
> Sent: Friday, June 04, 2004 7:54 AM
> To: lpc2000@yahoogroups.com
> Subject: Re: [lpc2000] Re: interesting info from Atmel / STM / Analog
> devices
>
>
> On Thu, Jun 03, 2004 at 11:13:57PM -0000, lpc2100_fan wrote:
> > btw. I am also convinced that Philips will come out with
> ARM9 devices
> > but I doubt they will be too similar to the Atmel devices.
>
> I see one difference: Atmel parts are all in big and
> expensive (considering
> PCB and soldering) casings (BGA). The smallest Atmel part is in
> a TQFP100, whereas the smallest Philips one is a LQFP48.
> I hope we will see even smaller ARM's (probably 20 pins devices?).
> A 8-pin ARM7 would also be useful.
>
> M.
>
>
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Message
RE: [lpc2000] Re: interesting info from Atmel / STM / Analog devi ces
2004-06-04 by Larsen, Morten ActeNO
Well,
I'll
give it a shot myself;
"super-simple" MP3 player!
1)
needs at least 128KB internal flash (can't connect to external MMC most
likely)
2)
needs USB client interface that's 2 pins minimum (integrated transceiver)
- for download from PC/MAC
3)
needs SPI interface or I2S - that's another 3 pins minimum
(requirements depend on whether you use a VS1001 or
similar Micronas-type fully integrated
decoder+DAC+lineout-amp,
or just a audio-DAC w.line-amp etc.) Typically
these have separate data(audio) and control i/f, so it won't
work:-(
That was another 3 pins - now we don't have any
more!:-(
(need Vcc/GND and Reset - probably
...;-)
4)
forget about ETM or JTAG - debug will be by listening (probably an awkward
process ...;-)
Rather
far-fetched, but it's the best I can do:-)
PS: I
won't accept any low-bandwidth, low processing-requirements
type
of application (example: reading tempsensor, sending value out the
UART).
Those
are exactly what 8-bitters are for!
-Morten