Lpc2000

I'll have to agree on the minor and major errors I've uncovered in these docs, which lead me into investagating other manuals to find the truth! So far I've had to rewrite the manual several times so that it makes sense to me on a logical hardware standpoint!
  I have yet to sit down and start writting code and I won't do so untill I have a good logical view of the embedded hardware design along with a manual that makes sense to program the device, (ie... so it works like the way the manual describes how it should work). I'm greatful for this web site with it's input that shows and tells the areas and problems that start to occur and that, that maby others have had the same experience which only proves that, a clear consice methodology whould have been great from the benginning introducing this chip. Altho in my years of studying hardware design there are always bugs and sometimes you have to roll along with the bugs so to speak. I think for the market price value of this hardware, it does a dam good job for its size, cost and power comsumption. So if there are errors, which there are in any new release, the purpose of what we are typing on this website is to uncover and lead the way where revisions are not yet in order.

rtstofer <rstofer@...> wrote:
  --- In lpc2000@yahoogroups.com, "rtstofer" <rstofer@...> wrote:
>
> --- In lpc2000@yahoogroups.com, "Doug Collins" <dougc@> wrote:
> >
> > 
> > Richard wrote:
> > 
> > >I'm looking at Table 48 Pin Description For LPC2131/2132/2138
> > >(page 77) and the entry for P0.14 where there is an 'Important'
> > >note describing the use of P0.14.  This is in the User Manual
> > >dated November 22, 2004.  Am I looking at the wrong thing? 
> > 
> > Yep, that's the wrong thing, or at least the old thing.  The current
> user
> > manual is Rev 0.1, 11 - January 2006 
> > 
> > I do see the comment you're referring to in the System Control Block
> section
> > of the manual, section 3.2.  It's also discussed in Chapter 19,
> Flash Memory
> > System and Programming.  What I don't see is a single word about the
> special
> > usage of this pin in Chapter 6 or 7 which deal directly with
> configuring pin
> > functionality.  A note in section 6.2 "Pin Descriptions" would
> certainly be
> > nice.
> > 
> > Assuming that table 58 in the current manual corresponds to table
48 old
> > manual it looks like Philips removed this "Important Note".  
Maybe they
> > should put it back?
> > 
> > Doug
> > 
> > A Mind is Like A Parachute. Works Best When Open
> >
> 
> Ah!  Now I understand.  The really good news is that I can't even find
> the Jan 2006 edition.  I have wandered all over Google and a couple of
> Philips sites and not a trace.
> 
> I even started at the recommended site with no luck.  I did find a
> newer version (24 JUN 2005) where the bootloader function of P0.14 is
> now just a "Note:..."
> 
> Richard
>

How in the world I got off on the wrong chip completely escapes me! 
Duh!  I did find the LPC2103 User Manual dated Jan 2006.

A perfectly good warning in an older User Manual is certainly omitted
in the 2103.

I see the other requirement is to provide a pull-up resistor so the
pin doesn't float into an undefined state during reset.  I think I
knew that but now I'm certain.

Richard







    
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