How to solve the AVR microcontroller fuse bit lock-up problem？
Guest
#6813424
Erasing the entire chip will also reset the fuses.
Cliff W. wrote: > How to solve the AVR microcontroller fuse bit lock-up problem？ Depends on what exactly is the problem. There is no single "the fuse bit lock-up problem". Clock Fuses? → use external clock Reset redefined as debugWire? → attach debugger Reset disabled? → HV programmer needed A simple one-fits-all solution can be found by googling for "fuse resetter" or "fuse doctor". This is a one-purpose HV programmer that issues a chip-erase.
Guest
#6813434
matzetronics wrote: > Erasing the entire chip will also reset the fuses. No! Only the lock Bits. Only High Voltage Programming can fix all Fuse Problems.
Guest
#6813459
Cliff W. wrote: > How to solve the AVR microcontroller fuse bit lock-up problem？ Think twice before clicking on the start button. All other solutions cost more than they are worth. Unless you are so stupid to repeat the same mistake dozens of times.
Guest
#6813461
matzetronics wrote: > Erasing the entire chip will also reset the fuses. I assume that TO means situations where he locked himself out, so he cannot erase the chip anymore.
Guest
#6813684
With a parallel programmer there is no lockout problem. You get what you pay for.
not "parallel" but "High Voltage" https://www.mikrocontroller.net/articles/AVR_HV-Programmer