# --- fuse byte hfuse
# Select reset vector bootloader/app 
#  bootloader (0)
#  app (1)
BOOTRST=app

#  Boot size
#  256 (0b11) 256 words
#  512 (0b10) 512 words
#  1024 (0b01) 1024 words
#  2048 (0b00) 2048 words
BOOTSZ=2048

# EEPROM memory is indeed/not  preserved erase
#  indeed (0)
#  not (1)
EESAVE=not

# Ext Oscillator options powersave/full-swing 
#  powersave (0)
#  full-swing (1)
CKOPT=full-swing

# Enable SPI serial programming enable/disable 
#  enable (0)
#  disable (1)
SPIEN=enable

# Enable JTAG enable/disable 
#  enable (0)
#  disable (1)
JTAGEN=enable

# Enable OCD enable/disable 
#  enable (0)
#  disable (1)
OCDEN=disable


# --- fuse byte lfuse
#  Clock Source
#  ext-res (0b1111) external resonator
#  ext-low (0b1001) external low-freq crystal
#  ext-rc (0b1000) external RC
#  int1 (0b0001) internal RC at 1 MHz
#  int2 (0b0010) internal RC at 2 MHz
#  int4 (0b0011) internal RC at 4 MHz
#  int8 (0b0100) internal RC at 8 MHz
#  ext (0b0000) external clock
CKSEL=int1

#  Start-Up Time
#  0 (0b00) when BOD enabled
#  1 (0b01) for fast rising power
#  2 (0b10) for slow rising power
#  3 (0b11) reserved
SUT=2

# Brown-out Detector enable enable/disable 
#  enable (0)
#  disable (1)
BODEN=disable

# Brown-out Detector trigger level 4V/2.7V 
#  4V (0)
#  2.7V (1)
BODLEVEL=2.7V


# --- fuse byte lock
#  generic lock
#  unlocked (0b11) no restriction
#  ro (0b10) read-only (no SMP)
#  restrict (0b00) disable read and write
LOCK=unlocked

#  lock for application
#  unlocked (0b11) no restriction
#  boot-only (0b10) can write boot loader section only
#  restrict (0b00) can write boot loader section only, boot loader can not read app
#  protect (0b01) boot loader can not read app
BLAPP=unlocked

#  lock for boot loader
#  unlocked (0b11) no restriction
#  boot-only (0b10) can write app section only
#  restrict (0b00) can write app section only, boot loader can not read app
#  protect (0b01) app can not read boot loader
BLBOOT=unlocked