3.2.2 mEDBG Fuse Filter

The mEDBG does not initially allow users to program all fuses of the target device through Atmel Studio, as a filter is implemented to protect certain fuses. The protected fuses are different for every product using the mEDBG and are typically clock related fuses that could be set to invalid configurations.

The fuse protection can be disabled by writing the FUSE bit to ‘0’.

Info: The fuse filter prevents users from changing critical fuses using Atmel Studio. However, it does not prevent users from setting fuses freely using the command line interface atprogram bundled with Atmel Studio.