Hi,
I might have bricked my ATmega168a and possible an ATTiny or 2. Lets call these lessons learned. From this post https://www.avrfreaks.net/forum/tutsoft-recovering-locked-out-avr, which is a bit over-my-head, there is a 90% chance I can rescue my AVRs. If I understand correctly, I can use my Dragon over HVSP to reset the fuses, which I think may be the issue. Now for the question; My 168 is on a breadboard; does the 168 require an external crystal with caps?
For what its worth, I added the external crystal with caps, connected the HVSP wires and reprogrammed the fuses :) - w
t! love my dragon.
Get your terminology right. A mega168A requires HVPP which is lots of wires.
So does a Tiny2313/4313.
The smaller Tinys use HVSP which is only a few wires.
All the same, none of these chips should ever need HVP of any description unless you set the RSTDISBL fuse.
Think of the RSTDISBL fuse as a last resort. i.e. only use it in a debugged product that you are never going to repair.
David.
Thank you David for the correct. As for why the device was bricked (e.g. why the RSTDISBL fuse was set); I set the LOW, Hi and Extended fuses with the wrong values. Actually I had the Ext and Low values switched...I learned that valuable lesson.
