Here we will document the settings of the fuses in the AVR microcontroller that we recommend. If a fuse is not mentioned here, leave it in the default state.
Fuse High Byte
name | bit | description | value |
OCDEN | 7 | enable OCD | 1(default) |
JTAGEN | 6 | enable JTAG | 0(default) |
SPIEN | 5 | enable SPI programming | 0(default) |
WDTON | 4 | watchdog timer always on | 1(default) |
EESAVE | 3 | preserve EEPROM contents during chip erase | 0 |
BOOTRST | 0 | reset vector | 1(default) |
Fuse Low Byte
name | bit | description | value |
CKDIV8 | 7 | divide clock by 8 | 1(default) |
SUT1 | 5 | start-up time | 0 |
SUT0 | 4 | start-up time | 0(default) |
CKSEL3 | 3 | clock source | 1 |
CKSEL2 | 2 | clock source | 1 |
CKSEL1 | 1 | clock source | 0 |
CKSEL0 | 0 | clock source | 0(default) |