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Lpc2000

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Re: [lpc2100] Evaluation/development board features?

2004-02-05 by microbit

Hi John,

> that.  I'm starting schematics today, and creating symbols.  Is there
> something specific about what you said that I should look out for in the
> design, or would be convienent to have on the board?

You'd want to make sure that P0.14 can be set high/Low (for Bootloader),
and that you can control DBGSEL and RTCK easily (to enable/disable JTAG).
Next time I fire up the machines I'll actually try the ISP utility, as I
find it bizarre
that the ISP utility prompts to "press reset on the board" but doesn't
prompt
for any action on P0.14 - but I might be presumptious here.

I just think that P0.14 is "banned" from normal I/O use --  unless you can
guarantee
it is HIGH when leaving Reset. (which is a pain, considering there's a NC
pin on the thing)
In the applications I have in mind I can't guarantee that, thus the risk is
there
that the Bootloader is entered on StartUp.

B rgds
Kris

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