Burn fuse Walkthrough REQUEST??

[Eno]

Using a new AVR ISP MKII. Using ATmega88:

In AVR studio:

BOARD TAB:
125 kHz ISP frequency (tried others before)

FUSES TAB:
The SPI serial program downloading is unchecked and has a question mark.
everything OK except it says "entering programming mode...failed"

ISP mode error dialog box:
~check frequency of ISP...



I try programming, but verification not pass one address is bad, after
that Atmega don't go to programming mode.


What to do?

I have the same problem, but I was using 1MHz, I missed the "it has to be 1/4 of 1MHz". I kept on having the error: "Warning, verification has failed" or something to that effect. Will try again tomorrow.

[none_such]

check that the orientation of the microconrroller chip is correct; also, as usual, check for bridges - you both are encountering chip problems, not other hardware or programming problems.
hahahehihoha - I thought you gave up and went surfing.

Cheers

[Eno]

I think my verification problem was because I set my speed to 1MHz. I'll try it later with a different speed.

[none_such]

Eno,
You should still be able to use 1 mhz if you deselect divide by 8 internally from the fuses section , but first you need to communicate with the micoprocessor first - change that fuse setting at 125 khz then you can choose the higher freq. If you can't there is some other problem.

[hahahehihoha]

Chapter 7 in the ATMEGA88 PDF is about syst3m clocks and clock sources.

7.2.1 Default Clock Source
The device is shipped with internal RC oscillator at 8.0MHz and with the fuse CKDIV8 programmed, resulting in 1.0MHz system clock.

ok, less than 1/4th is under 250kHz, I use 125kHz and it doesn't work.

[none_such]

hahahehihoha-

have you tried removing the microcontroller with hot air; inspecting pins and pads; double checking orientation (when reading "Atmel" on the chip, "Wave Bubble ..." on PCB should appear upside down) and remounting? If so, try a new microcontroller. If you get the same results after that, I don't know what to tell you: God is just trying to tell you something like, "You do not need a cell phone jammer."

[Eno]

Chapter 7 in the ATMEGA88 PDF is about syst3m clocks and clock sources.

7.2.1 Default Clock Source
The device is shipped with internal RC oscillator at 8.0MHz and with the fuse CKDIV8 programmed, resulting in 1.0MHz system clock.

ok, less than 1/4th is under 250kHz, I use 125kHz and it doesn't work.

I used 125kHz. It seems to have worked(all tests say "O.K."). But I am waiting on parts to continue building. Please explain what errors you had.