Lpc2000

Your exactly right.  I figured this out late last night with a scope.
 When using hyperterminal DTR or RTS was asserted at all times, this
gave power to my level translator.  When using any of the ISP programs
they held these lines low and the level converter was not powered. 
This is something that should have jumped out at me, but I was to
blind to see it.  Maybe this post will help someone else out in the
future.  Thanks to all that offered help.

Reggie


--- In lpc2000@yahoogroups.com, "Aalt Lokhorst" <lokhorst@s...> wrote:
> Hello Reggie,
> 
> 
> > The level translator i'm using is a prebuilt unit.  It gets it's power
> > from the serial port (RTS & DTS) lines I think.  
> 
> I think the Philips utility uses DTR to reset the processor and RTS for 
> forcing the procssor in 'boot-loader' mode. (You need some extra 
> interfacing if you want to use these features) Probably your interface 
> cannot work if these lines are toggling their levels.
> 
> I have LPC2000 Flash utility V2.20 and it has a checkbox in the lower 
> right corner to enable this feature. I don't know what levels it will 
> use for the DTR/RTS if you disable it.
> 
> I hope this will help you to get into the right direction.
> 
> 
> -- 
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> Aalt Lokhorst
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