Re: WTD: ARM uC with low pin count

In article <1124642564.290911.97470@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
larwe@xxxxxxxxx says...
>
> > I would like to know if there is an ARM processor with a external Buss
> > and a low pin count.
>
> The two are mutually exclusive. 16 pins data bus plus 24-32 pins
> address bus, plus power and ground - don't you want any I/O?
>
>
Low pin count is sort of a relative thing. I found that the AT94R40807
with 100 pins had enough pins for address, data, chip selects and a
reasonable amount of I/O. Certainly 100 > 64 > 48, etc.etc. But
a 100-pin qfp is certainly easier to work with than a BGA chip.


For me, the dividing line runs not between pin counts, but between
packages that I can solder by hand (QFP) and those that require special
equipment and layout techniques (BGA).

Mark Borgerson

.

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