> There does not seem to be a low power (<2W), low cost (<$20), good
> performance (200MHz)
> processor except 5275.
There is - at Freescale. And it is just one, your observation holds
true
for the rest (unfortunately ....).
Have a look at the MPC5200 - PPC 603e core, DDRAM, PCI, 10/100
Ethernet, USB 1.1 host, several multipurpose serial channels,
about 1W at 400 MHz core clock. The cheapest they list
is at $17.something for >1000 pieces.
Dimiter
------------------------------------------------------
Dimiter Popoff Transgalactic Instruments
http://www.tgi-sci.com
------------------------------------------------------
News wrote:
> We currently use a MCF5272. We are discussing moving to a faster
> processor. I did
> a quick search among the various processors available and I have a few
> observations.
>
> - Average ARM (Atmel) Processors seem to run at 40-50MHz. The
> high end
> 200-400Mhz were very expensive compared to 5275 ($10).
>
> - Power QUICC (400MHz) seems to be power hungry. 6W
> consumption. 5275
> seems to consume 1mA per MHz = 200mA @ 200MHz * 2.0V
> (approx) = 0.4W. There
> must be some problem with my calculation here since this
> difference is too
> large. I could not find any numbers in the Coldfire
> literature.
>
> There does not seem to be a low power (<2W), low cost (<$20), good
> performance (200MHz)
> processor except 5275.
>
> Your opinions please.
Reply by David Brown●May 25, 20062006-05-25
News wrote:
> We currently use a MCF5272. We are discussing moving to a faster
> processor. I did
> a quick search among the various processors available and I have a few
> observations.
>
> - Average ARM (Atmel) Processors seem to run at 40-50MHz. The
> high end
> 200-400Mhz were very expensive compared to 5275 ($10).
>
> - Power QUICC (400MHz) seems to be power hungry. 6W
> consumption. 5275
> seems to consume 1mA per MHz = 200mA @ 200MHz * 2.0V
> (approx) = 0.4W. There
> must be some problem with my calculation here since this
> difference is too
> large. I could not find any numbers in the Coldfire
> literature.
>
> There does not seem to be a low power (<2W), low cost (<$20), good
> performance (200MHz)
> processor except 5275.
>
> Your opinions please.
>
What about staying in the family and using a Coldfire 54xx device?
Reply by Jim Granville●May 25, 20062006-05-25
News wrote:
> We currently use a MCF5272. We are discussing moving to a faster
> processor. I did
> a quick search among the various processors available and I have a few
> observations.
>
> - Average ARM (Atmel) Processors seem to run at 40-50MHz. The
> high end
> 200-400Mhz were very expensive compared to 5275 ($10).
>
> - Power QUICC (400MHz) seems to be power hungry. 6W
> consumption. 5275
> seems to consume 1mA per MHz = 200mA @ 200MHz * 2.0V
> (approx) = 0.4W. There
> must be some problem with my calculation here since this
> difference is too
> large. I could not find any numbers in the Coldfire
> literature.
>
> There does not seem to be a low power (<2W), low cost (<$20), good
> performance (200MHz)
> processor except 5275.
I did note that AnalogDevices now do a stacked die BlackFin
http://www.analog.com/en/press/0,2890,3%255F%255F101169,00.html
they claim 'starts at $13.75/10K', for devices with 500MHz core, with
148KB RAM.
Of course, the flash will not run at 500Mhz, but this looked an
impressive single package.
I think intel also do stacked die XScales ?
-jg
Reply by Jack Klein●May 25, 20062006-05-25
On 24 May 2006 18:15:15 -0700, "News" <news@redbandsystems.com> wrote
in comp.arch.embedded:
> We currently use a MCF5272. We are discussing moving to a faster
> processor. I did
> a quick search among the various processors available and I have a few
> observations.
>
> - Average ARM (Atmel) Processors seem to run at 40-50MHz. The
Above you are referring to typical ARM 7 parts.
> high end
> 200-400Mhz were very expensive compared to 5275 ($10).
Arm 9 runs to just about 200Mhz. Look at Atmel's and Freescale's ARM
9 parts. Above 200Mhz, you are talking about either XScale or ARM 11,
which might be more expensive.
> - Power QUICC (400MHz) seems to be power hungry. 6W
> consumption. 5275
> seems to consume 1mA per MHz = 200mA @ 200MHz * 2.0V
> (approx) = 0.4W. There
> must be some problem with my calculation here since this
> difference is too
> large. I could not find any numbers in the Coldfire
> literature.
>
> There does not seem to be a low power (<2W), low cost (<$20), good
> performance (200MHz)
> processor except 5275.
>
> Your opinions please.
I know we're paying quite a bit less for Atmel's AT91RM9200, and
running it at 180 MHz. Of course, volume makes a difference, but
depending on the package, DigiKey has the least expensive part at
$16.65 in single quantities.
Atmel also has one or more newer ARM 9 parts, I'm not so familiar with
them, but they are probably worth checking out.
--
Jack Klein
Home: http://JK-Technology.Com
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Reply by News●May 24, 20062006-05-24
We currently use a MCF5272. We are discussing moving to a faster
processor. I did
a quick search among the various processors available and I have a few
observations.
- Average ARM (Atmel) Processors seem to run at 40-50MHz. The
high end
200-400Mhz were very expensive compared to 5275 ($10).
- Power QUICC (400MHz) seems to be power hungry. 6W
consumption. 5275
seems to consume 1mA per MHz = 200mA @ 200MHz * 2.0V
(approx) = 0.4W. There
must be some problem with my calculation here since this
difference is too
large. I could not find any numbers in the Coldfire
literature.
There does not seem to be a low power (<2W), low cost (<$20), good
performance (200MHz)
processor except 5275.
Your opinions please.