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Message

Re: 2214 "simple" board design suggestions

2004-02-29 by redsp@yahoo.com

--- In lpc2000@yahoogroups.com, Alex Gibson <alxx@a...> wrote:
> skykotech wrote:
> 
> > I have about 4 or 5 projects that the LPC2214 would be about a 
> > perfect fit.  I have 3 sample 2214 parts, but hopefully can get a
few 
> > more down the road.  I was wondering if some on this list might 
> > appreciate a cheap, somewhat simple 2214 board, made available at 
> > cost + shipping, and with the schematics and gerbers posted in
the 
> > files section.  I have the time and desire, and I have routed
many 2 
> > and 4 layer boards including a very dense PCI card.
> 
> I'd be interested in a couple.
> 
> 
> > Anyway, if so, what would you want on the board?  Just the
processor, 
> > regulators (simple linear?) for the 1.8V core and 3.3V IO, and a 
> > crystal, with all other signals brought to .1 inch headers, or 
> > something a bit more exotic, but maybe more usefull?
> 
> ethernet + compact flash
> 
> or lcd interface
> either graphical or touch screen
> 
> or reasonable sized fpga
> only hassle with fpga(xilinx or altera)
> is needing a config prom

You don't need a config prom.  The CPU can configure the device either
through a serial pin or through an 8 bit parallel port.  The EP1K50,
for example, is 96 kB which will fit in the Flash of any of these
devices.  A little compression algorithm will likely squeeze that into
half that space.  


> If you use one of the actel flash fpga's
> could avoid this.

Yes, but they are not 5 volt tolerant.  A lot of IO functions need to
deal with 5 volt IOs.

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