I had my ATtiny861 working fine (simple blink program).
Then I programmed the fuses to use a ceramic resonator. This is the same resonator I have used on an ATtiny2313 and had it work fine.
Here's the details:
Resonator is the 10 MHz Murata unit from SparkFun. It needs no external caps (they are built in). Worked fine on the 2313 after setting the fuses to 0x0f.
avrdude command was -U lfuse:w:0x0f:m. I didn't mess with the other fuses.
Reading the 861 documentation implied to me that the same command should work for the 861, so I used that. Now the 861 won't do anything and won't talk to avrdude anymore! Yuch!
My fear is that I should have used 0x4f so that the CLKO bit would have been kept high (disabled). If the 861 is trying to drive clock out on PB5, then that may conflict with the use of PB5 as XTAL2 (along with PB4 as XTAL1, this is the resonator connection).
So here are my questions:
Anyone have any insight here? What's wrong?
How can I unbrick this part?
Thanks for any help.