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[AVR] Bootloader can't communicate with my atmega32 after change fuse bits..

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ejbiswas

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um new in MCU and try to burn the mcu.
at first test the led blinking project on atmega 32 then i write the LOW FUSE as C9 and from then my USBASP show that it can't communicate with the chip.
now what can i do to re burn it ?
 

A LOW FUSE value of 0xC9 configures the device for using an external low frequency crystal, from the default of using the internal RC oscillator with a frequency of 1MHz.

It sounds as if you may have inadvertently disabled your device, by specifying a clock source which does not currently exist.

If you do not currently have an appropriate external crystal attached, you will need to do so to be able to reprogram the device.

Another option is to provide an external clock source to the required pin(s).

Your device is an ATMEGA32 and not the ATMEGA32A or some other variant?

It would be helpful if you could post a schematic of the current circuit.

You might find the online AVR fuse calculator of benefit in the future:

Engbedded Atmel AVR® Fuse Calculator


BigDog
 
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