[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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