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Lpc2000

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Re: [lpc2100] Evaluation/development board features?

2004-02-05 by Alaric B Snell

J.C. Wren wrote:

>     I think I don't know enough to know what to think yet :)  I haven't 
> got anything with a processor yet, so I don't have any experience with 
> 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?

P0.14 is set up as an input and checked by the ROM loader. If it's in 
whatever state it needs to be in (the state it's not pulled to by the 
internal resister) then it starts trying to talk to a host PC via the 
serial port and offering its services as an ISP programming and 
monitoring interface (upload/download RAM, copy RAM to FLASH, call user 
code, etc) - otherwise it just runs the code in the FLASH.

So in order to program it via the serial port, you need a way of pulling 
P0.14 up or down or whatever it is :-)

> 
>     --jc
> 

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