3.2.3 Super User Fantastic Feature Enable Register
The Super User Fantastic Feature Enable Register allows the user to modify the behavior of the mEDBG.
Name: | SUFFER |
Offset: | 0x0120 |
Reset: | 0xFF |
Property: | N/A |
Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
EOF | LOWP | FUSE | |||||||
Access | R/W | R/W | R/W | ||||||
Reset | 1 | 1 | 1 |
Bit 2 – EOF Extended Off
1
’ sets default operation. Writing the EOF bit to
‘0
’ enables the extended off power mode. If no USB enumeration
is successful within five seconds of power-up, the mEDBG enters deep
sleep.Bit 1 – LOWP Low Power
1
’ sets the system clock to its default value. Writing the LOWP
bit to ‘0
’ enables low-power mode. The mEDBG is set to run at 1
MHz, which decreases the power usage. Bit 0 – FUSE FUSE Protection
1
’ enables fuse protection when using Atmel Studio. The fuse protection prevents
modification of specific fuses in the ATmega328PB
target device that could make the mEDBG on the ATmega328PB
Xplained Mini not usable. Writing the FUSE bit to ‘0
’
removes all protection of fuses in the ATmega328PB
target device. Warning: Writing the FUSE bit to ‘
0
’ enables modification of all fuses
in the ATmega328PB. Setting wrong fuse settings
may render the mEDBG not usable on the ATmega328PB
Xplained Mini. As an example, if an invalid clock setting is set, recovery may
require an external debugger.