Help unlock microcontroler atmega644pa-mu

[hosseinhomerehe]

HI
I have a microcontroller AVR ATMEGA644 that I want to get the hex code but the microcontroller is locked.
Somebody has some training or tips on how to get the Hex code locked microcontroller?
THANK

 

[andre_luis]

Fuse bits are designed to protect microcontroller contents from unauthorized copy, therefore it is just acting as expected. However, if you want to not waste this chip by uploading another code there, be advised that not all programmers are able to do that; as for example with any one that uses the ISP interface you can set fuses, but not able to reset them.

 

[schmitt trigger]

You are finding exactly the reason to lock up a microcontroller: to prevent unauthorized copying or altering the code.