Lpc2000

Rod, 

Thanks! I will definitely tweak my power circuit to supply 3.3 V first and
then 1.8 keeping the reset low until 1.8 reaches 95%.

Best regards,

Milos

 

 

From: Rod Moffitt [mailto:rodlist@...] 
Sent: Wednesday, February 02, 2005 10:14 PM
To: lpc2000@yahoogroups.com
Subject: Re: [lpc2000] Question: Secondary JTAG internals

 

> Philips has stated, and my experience has been, that there is not a 
> sequencing issue on power up.  I suspect you've got something else going 
> on.  I've not used the secondary JTAG myself, but it does appear to 
> cause people no end of troubles.

I have been using the secondary JTAG on several different LPC2106 designs 
(with different revs of both the chip and boot-loader) since the summer of 
2004 and have not had a single problem.

On a side note. All of the designs had 1.8V regulators that fed off of the 
3.3V mains and only let the LPC2106 out of reset after the 1.8V was in 
spec and then only after a delay in the order of hundreds of milliseconds.

- Rod



  _____  

Yahoo! Groups Links

*	To visit your group on the web, go to:
http://groups.yahoo.com/group/lpc2000/
  
*	To unsubscribe from this group, send an email to:
lpc2000-unsubscribe@yahoogroups.com
<mailto:lpc2000-unsubscribe@yahoogroups.com?subject=Unsubscribe> 
  
*	Your use of Yahoo! Groups is subject to the Yahoo!
<http://docs.yahoo.com/info/terms/>  Terms of Service. 



[Non-text portions of this message have been removed]