Atmega8 Chip damaged due to wrong fuse bits

Status
Not open for further replies.
H

hardik.patel

Member level 5
Joined
Aug 15, 2012
Messages
94
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,288
Activity points
2,008
I am using extreme AVR Burner for burn the atmega8.
In that i had set the fuse bits as

low-D9 n
High-EF

Now if i use it again for re-programme, its not responding.
Does permanently damaged?.....or there is another problem??
 

I presume, "extreme AVR burner" is a simple serial programmer.

You can't set SPIEN bit to 1 (disabling serial programming mode) with a serial programmer, in so far High Fuse EF won't be set.

But it's easy to set a wrong clock option that requires an external clock source to XTAL1 for furher programmer access, as indicated in the datasheet. You have set CLKSEL = 1001 (external low frequency oscillator).
 

@FVM,

So you mean this chip is damaged permanently??(as i dont had high voltage parallel programmer)

Or it can be programme by serial programmer?
 

Once I had the same problem. I used a cheap AVR programmer to program ATMega16 and wrote some wrong fuses and then the same programmer was unable to program the chip again and then I used my EasyAVR v7 development board's onboard programmer to erase the chip and reprogram it and my chip started to work again.
 

hardik.patel said:
I am using extreme AVR Burner for burn the atmega8.
In that i had set the fuse bits as

low-D9 n
High-EF

Now if i use it again for re-programme, its not responding.
Does permanently damaged?.....or there is another problem??
Click to expand...

Forget about the damaged one, Now tell me

How can i program .hex with appropriate fuse bits using extreme avr burner to another atmea8?
 

Hi,

How can i program .hex with appropriate fuse bits using extreme avr burner to another atmea8?
Click to expand...

1) don´t disable "serial programming mode"
2) set the clock fuse bits to "External Crystal/Ceramic Resonator" as I told you in another thread insted of "External Low-frequency Crystal"

then you will have a lot of fun with your Mega8.

BTW: although these are a lot of pages.... but reading the datasheet is essential. I think there´s no way around this.
I recommend to use the PDF instead of paper, then you can use the blue colored links within the PDF and do a "search" on keywords.

Klaus
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…