[time-nuts] Rom Expansion for HP5370B
John Seamons
jks at jks.com
Mon Feb 21 17:21:07 UTC 2011
> 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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