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Jack Humbert 2017-06-10 15:11:53 -04:00 committed by GitHub
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Atmega32u4 Fuse/Lock Bits for Planck/Atomic/Preonic
=========================
Low Fuse: 0x5E
High Fuse: 0x99
Extended Fuse: 0xF3
Lock Byte: 0xFF
ATMega168P Fuse/Lock Bits
=========================
This configuration is from usbasploader's Makefile.
HFUSE 0xD6
LFUSE 0xDF
EFUSE 0x00
LOCK 0x3F(intact)
#---------------------------------------------------------------------
# ATMega168P
#---------------------------------------------------------------------
# Fuse extended byte:
# 0x00 = 0 0 0 0 0 0 0 0 <-- BOOTRST (boot reset vector at 0x1800)
# \+/
# +------- BOOTSZ (00 = 2k bytes)
# Fuse high byte:
# 0xd6 = 1 1 0 1 0 1 1 0
# ^ ^ ^ ^ ^ \-+-/
# | | | | | +------ BODLEVEL 0..2 (110 = 1.8 V)
# | | | | + --------- EESAVE (preserve EEPROM over chip erase)
# | | | +-------------- WDTON (if 0: watchdog always on)
# | | +---------------- SPIEN (allow serial programming)
# | +------------------ DWEN (debug wire enable)
# +-------------------- RSTDISBL (reset pin is enabled)
# Fuse low byte:
# 0xdf = 1 1 0 1 1 1 1 1
# ^ ^ \ / \--+--/
# | | | +------- CKSEL 3..0 (external >8M crystal)
# | | +--------------- SUT 1..0 (crystal osc, BOD enabled)
# | +------------------ CKOUT (if 0: Clock output enabled)
# +-------------------- CKDIV8 (if 0: divide by 8)
# Lock Bits
# 0x3f = - - 1 1 1 1 1 1
# \ / \-/ \-/
# | | +----- LB 2..1 (No memory lock features enabled)
# | +--------- BLB0 2..1 (No restrictions for SPM or LPM accessing the Application section)
# +--------------- BLB1 2..1 (No restrictions for SPM or LPM accessing the Boot Loader section)