[chbot] A cheap pair of ARMs...

[Charles Manning]

On Wednesday 05 September 2012 18:13:48 Paul Davey wrote:
> > On Wed, Sep 5, 2012 at 5:02 PM, Charles Manning <cdhmanning at gmail.com> 
wrote:
> >> On Wednesday 05 September 2012 10:56:45 John Tiler wrote:
> >>> Quite nice, it's a shame the 4MF's dont have an External Peripheral
> >>> Interface (EPI) for external SRAM/Flash etc, but their 3M line does.
> >>>
> >>> I wonder why?
> >>
> >> A good reason....
> >> These are designed as cheap-as-can-be parts and thus the external bus
> >> interfacing (as well as the associated pads and pins)  is removed
> >>
> >>
> >> Is it really a shame? It's a bit like saying that it is a shame your
> >> bike does not have 4 wheel drive. Buy the part you need for the job you
> >> want to do.
>
> For what its worth I believe many of the STM32 series have a static
> memory interface.

Yes, some do and some don't.

That's how they manage to provide a wide range of parts at different 
price/functionality  points from the approx $1 part in 28-pin DIP to parts 
with well over 100 pins costing a lot more.