AVR-Chat

Hi Russel!

> -----Original Message-----
> From: Russell Shaw
> Sent: Wednesday, December 01, 2004 9:38 AM
> To: AVR-Chat@yahoogroups.com
> Subject: Re: [AVR-Chat] FW: Intro & atmeg88 fuse writing problem
> 
> 
> ...
>
> > So I would like to ask you for help because I can not 
> manage to program the fuse bits of the ATMEGA88. I have an 
> STK500 board and a JTAGICE mk II.  I can not remember what I 
> have done to the device but when I received them fuse 
> programming worked fine. Later I configured it to allow 
> debugging with the JTAGICE mk II: enabled debug wire 
> interface, and configured to use a 8 MHz external crystal. 
> Everything went fine till now. Now I should use the internal 
> RC oscillator, but I realised that I can not program any of 
> the fuses even in high voltage parallel programming mode 
> (using the STK500 and RS232). I can change the protection 
> bits, I can erase the device, I can download any program into 
> the flash, I can run and debug the downloaded program but I 
> can not change any fuses.
> > 
> > Does anybody have an idea what could cause this problem, 
> and how could I solve it? I really need that on chip RC oscillator. 
> > 
> > Best regards:
> >     Gyuri
> 
> Try programming it at the slowest clock speed.

Thanks for the good idea, but I already tried at 32.7 KHz and this did not helped.

BR:
	Gyuri