That is true, the SAM7X... are very nice. I currently use them a lot
(mainly for its CAN bus). The bad thing is that they have Ethernet but
no phy, so an external phy must be used. In that respect, for an
application using Ethernet I would use a Luminary, that has both MAC &
PHY on-chip and only needs the magnetics (and USB, and CAN, and
whatever...), even nice development kits with lot of GPIO accesibles in
0.1" spaced pads, so no need to solder the LQFP :) , like this
http://es.mouser.com/ProductDetail/Texas-Instruments/EKC-LM3S9B92/?qs=sGAEpiMZZMvu0Nwh4cA1wQrEqqirqo8z34F54zcDRdU%3d
I suppose that the bus can be attacked by GPIO... but if Ethernet is not
needed, I would prefer to not bother too much and have it nicely
memory-mapped as in a 7SE512 :) that also is 128-pin instead of 100, but
equally easy (or difficult) to solder. But what I would really do is to
use my embedded Blackfin processor board, with uClinux, a touch panel
and graphical display, and... well, that if I would have the time
available, and a second 5370 available :)
Regards,
Javier
El 21/02/2011 18:21, John Seamons escribió:
Perhaps an AT91SAM7SE512 - it has an external addr/data bus, with quite
flexible configuration, and USB - but no Ethernet :)
Regards,
Javier
One thing I like about the SAM7X512 (and others) is that in exchange for giving
up the external bus interface you get USB -and- Ethernet. The m6800 A16/D8 bus
is so simple and slow you can bit bang it using GPIO.
Plus in these parts there is plenty of flash and SRAM (512K/128K) so no
external memory is needed. It's bad enough to have to solder a single
LQFP-100..
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Javier Herrero EMAIL: jherr...@hvsistemas.com
Chief Technology Officer
HV Sistemas S.L. PHONE: +34 949 336 806
Los Charcones, 17 FAX: +34 949 336 792
19170 El Casar - Guadalajara - Spain WEB: http://www.hvsistemas.com
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