Re: [Amforth-devel] Help getting started with a atmeg644PA

[Leon N M. <leo...@gm...>]

Are you sure that 644PA means 644P Automotive?

The 644P is not recommended for new designs; they suggest the 644PA instead:

http://www.atmel.com/dyn/products/product_card.asp?part_id=3896

Furthermore, the 644PA and 644P Automotive have separate pages:

http://atmel.com/dyn/products/product_card.asp?part_id=4604
http://atmel.com/dyn/products/product_card.asp?PN=ATmega644P%20Automotive

Thanks.
-Leon

>Thursday 01 July 2010
>From: Andy Kirby <an...@ki...>
>Subject: Re: [Amforth-devel] Help getting started with a atmeg644PA
> Personaly i would go with the 644p (picopower 644) for the 644pa (644
> picopower, automotive grade)
> 
> grades for chips tend to be stuff like commercial, industrial, automotive,
> military. These normaly refer to how well the chip should survive lifes
> nastys like temperature ranges, radiation, vibration etc
> 
> so basicaly can be ignored by the average hobyist or commercial
> constructor. Go with the cheapest. (Military grade is normaly stupidly
> expensive).
> 
> Hope this helps.
> 
> Cheers
> 
> andy kirby