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Re: [AVR-Chat] Atmel JTAG-ICE MkII

2008-01-25 by Tim Gilbert

Thanks for all the suggestions.  However, I switched to a 10K resistor and everything works.  Well, mostly works, I did get one "can't read signature" error but it seems to debug and program ok now.  I assume that there is enough capacitance that the 100K won't pull the line up fast enough.

I had a similar problem with too small a resistor when using the ISP.  Haven't tried it with the 10K yet.

Regards,

Tim Gilbert
JEM Innovation Inc.
303-926-9053 (office)
303-437-4342 (cell)
720-890-8582 (fax)
www.jeminnovation.com
www.pdksolutions.com
  ----- Original Message ----- 
  From: David VanHorn 
  To: AVR-Chat@yahoogroups.com 
  Sent: Thursday, January 24, 2008 2:30 PM
  Subject: Re: [AVR-Chat] Atmel JTAG-ICE MkII


  On Jan 24, 2008 4:20 PM, Tim Gilbert <tim@jeminnovation.com> wrote:
  > Regarding below:
  > No other connections on the JTAG bus.
  > Running with internal clock at 8MHz.
  > I have always used a 100K pull resistor on Reset; is that too weak?
  >

  That is pretty weak. 50uA.
  I'd go with 10k


   

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