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Re: [AVR-Chat] Re: Another push here... Serial on ATmega128

2005-07-06 by Dave VanHorn

>
>I'm already feeling miserable !
>Shoot !!! Just checked the CKSEL table on the datasheet
>and 0100 - 0001 does actually select "Calibrated internal
>RC oscilattor"
>Hmm... after a few paragraphs it actually says it ships
>with 0001 (the internal rc thing) where I though the default
>would be the crystal.

If so, you'd have to have a crystal attached to program it.
They have their reasons.
Beware though, the osc they select is relatively slow, so setting too 
fast a programming clock will cause errors.
250kHz or slower for new devices, 2 MHz for an 8 MHz system, once 
it's up and running at speed.



>Thanks for the pointers. It's always very interesting and
>entertaining to hear for others.

That's what we're here for. Helping each other find the potholes, 
mostly by yelling when we fall in one :)

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