AVR-Chat

--- In AVR-Chat@yahoogroups.com, Dave VanHorn <dvanhorn@d...> wrote:

> ... if there's no operational
> difference, why would the customer 
> differentiate?

I'm kind of surprised to have got to this point in the discussion. I 
thought my point would have been taken and now I think I'm just going 
to state the obvious and nobody will remember how we got here and what 
the hell I'm going on about.

The reason you care about design quality is that you can trust it. A 
poor quality design may work most of the time for some people and all 
of the time for most people. But, when you get into a tight spot you 
want to be able to trust your tools. You want tools that are designed 
to work in every reasonable situation. You want a JTAG interface that 
keeps on working if there is a lot of noise on the supply and does not 
inject noise into a circuit that is sensitive to supply noise. You want 
the interface to produce absolutely no EMI and to be insensitive to EMI 
when the test system generates it. The Atmel JTAG ICE probably meets 
these criteria. For $300 it should. If you don't want to pay $300, you 
might still prefer a good design to a shoddy one.

Graham.