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 [Non-text portions of this message have been removed]
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Re: [AVR-Chat] Atmel JTAG-ICE MkII
2008-01-25 by Tim Gilbert
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