Graham Daniel wrote:
> 
> Tjaart van der Walt wrote:
> >
> > I am looking at writing a command parser for an SX28.
> > Flying at 50 or 100 MIPS, the program will execute from
> > external SPI memory (like a Stamp, just faster). There
> > are plenty of SPI EEPROMs out there, but I haven't noticed
> > an SPI RAM chip I can use for scratch memory/variables.
> > Has anyone seen anything like this?
> 
> The new Atmel "Dataflash" has twin buffers for read/write of flash data.
> These buffers could also be used for scratch memory.  Clock frequencies
> vary from 1 to 15 MHz, size is mega +
> Buffers are mostly just over 256 bytes each.

256 bytes of scratch will do nicely...
 
> Realtime clock chipz usually have general purpose ram also.

...and the RTC will be a bonus.
Do you have any idea what the smallest Dataflashes 
sell for? (in USD).

I haven't written a parser/interpreter before, but 
methinks it will be quite a nice challenge.

What sort of real nasties should be avoided?

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