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Re: [avr-chat] Newbie fuse selection..attempt 2
From: |
Richard Urwin |
Subject: |
Re: [avr-chat] Newbie fuse selection..attempt 2 |
Date: |
Fri, 22 Jul 2005 08:58:03 +0100 |
User-agent: |
KMail/1.5.3 |
On Friday 22 Jul 2005 2:05 am, Ben Mann wrote:
> * Are you trying this on a breadboard? It should still work but leads
> need to be kept as short as possible. Try running without any
> peripherals connected (ie, just connect VCC, GND, the XTAL pins and
> your programmer - you'll know the crystal works if you're able to
> read the fuses from AVR Studio or program the device - if this solves
> it then start looking at the rest of your circuit for problems).
Someone pointed out to me a while ago that breadboard has a built in
capacitance of 20pF or so. Adding XTAL capacitors may actually stop the
clock working.
--
Richard Urwin