Re: [Balloon] Re: Next Balloon

Hi all,

I was just wondering how fast the PXA27x series chips can change the state
of
their GPIO's and how long they take to respond to external interrupts? If
running at a frequency of 400MHz, can the GPIO's change state at that
frequency?

cheers,
Jamie Morken



----- Original Message -----
From: "Steve Wiseman" <steve@steves-house.org.uk>
To: <balloon@balloonboard.org>
Sent: Thursday, July 22, 2004 5:00 AM
Subject: Re: [Balloon] Re: Next Balloon


> 22/07/2004 12:25:37, Steve Wiseman <steve@steves-
> house.org.uk> wrote:
>
> >Err, no. If you look at the BGA package...
>
> I've been pondering datasheets and design rules, and I think that
> the .65mm versions (that's any but the PXA270) require
> microvias, and even then, the tracking will be excitingly fine pitch.
> PXA270 is physically smaller than the other 27X devices, but does
> require a separate boot flash. Hmm, decisions. I guess I need to
> find current prices for microvia boards (and poke Protel and
> Specctra, to see what the support is like for them)
>
> Steve
>
>
>
>
>
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