part
desc = <description> ; # quoted string, the long part name, eg, "ATmega328p"
id = <id> ; # quoted string, normally an abbreviated part name
variants = <str1> [, <str2> ...]; # quoted strings, each starts so "<alt-name>: ..."
family_id = <id> ; # quoted string, e.g., "megaAVR" or "tinyAVR"
prog_modes = PM_<i/f> {| PM_<i/f>} # interfaces, e.g., PM_SPM|PM_ISP|PM_HVPP|PM_debugWIRE
mcuid = <num>; # unique id in 0..2039 for 8-bit AVRs
n_interrupts = <num>; # number of interrupts, used for vector bootloaders
n_page_erase = <num>; # if set, number of pages erased during SPM erase
n_boot_sections = <num>; # Number of boot sections
boot_section_size = <num>; # Size of (smallest) boot section, if any
hvupdi_variant = <num> ; # numeric -1 (n/a) or 0..2
devicecode = <num> ; # deprecated, use stk500_devcode
stk500_devcode = <num> ; # numeric
avr910_devcode = <num> ; # numeric
has_jtag = <yes/no> ; # part has JTAG i/f (deprecated, use prog_modes)
has_debugwire = <yes/no> ; # part has debugWire i/f (deprecated, use prog_modes)
has_pdi = <yes/no> ; # part has PDI i/f (deprecated, use prog_modes)
has_updi = <yes/no> ; # part has UPDI i/f (deprecated, use prog_modes)
has_tpi = <yes/no> ; # part has TPI i/f (deprecated, use prog_modes)
is_avr32 = <yes/no> ; # AVR32 part (deprecated, use prog_modes)
is_at90s1200 = <yes/no> ; # AT90S1200 part
signature = <num> <num> <num> ; # signature bytes
usbpid = <num> ; # DFU USB PID
chip_erase_delay = <num> ; # microseconds
reset = dedicated | io ;
retry_pulse = reset | sck ;
# STK500 parameters (parallel programming IO lines)
pagel = <num> ; # page load pin name in hex, e.g., 0xD7
bs2 = <num> ; # byte select 2 pin name in hex, e.g., 0xA0
serial = <yes/no> ; # can use serial downloading
parallel = <yes/no/pseudo> ; # can use parallel programming
# STK500v2 parameters, to be taken from Atmel's ATDF files
timeout = <num> ;
stabdelay = <num> ;
cmdexedelay = <num> ;
synchloops = <num> ;
bytedelay = <num> ;
pollvalue = <num> ;
pollindex = <num> ;
predelay = <num> ;
postdelay = <num> ;
pollmethod = <num> ;
hvspcmdexedelay = <num> ;
# STK500v2 HV programming parameters, from ATDFs
pp_controlstack = <num>, <num>, ... ; # PP only
hvsp_controlstack = <num>, <num>, ... ; # HVSP only
flash_instr = <num>, <num>, <num> ;
eeprom_instr = <num>, <num>, ... ;
hventerstabdelay = <num> ;
progmodedelay = <num> ; # PP only
latchcycles = <num> ;
togglevtg = <num> ;
poweroffdelay = <num> ;
resetdelayms = <num> ;
resetdelayus = <num> ;
hvleavestabdelay = <num> ;
resetdelay = <num> ;
synchcycles = <num> ; # HVSP only
chiperasepulsewidth = <num> ; # PP only
chiperasepolltimeout = <num> ;
chiperasetime = <num> ; # HVSP only
programfusepulsewidth = <num> ; # PP only
programfusepolltimeout = <num> ;
programlockpulsewidth = <num> ; # PP only
programlockpolltimeout = <num> ;
# debugWIRE and/or JTAG ICE mkII parameters, also from ATDF files
allowfullpagebitstream = <yes/no> ;
enablepageprogramming = <yes/no> ;
idr = <num> ; # IO addr of IDR (OCD) reg
rampz = <num> ; # IO addr of RAMPZ reg
spmcr = <num> ; # mem addr of SPMC[S]R reg
eecr = <num> ; # mem addr of EECR reg
eind = <num> ; # mem addr of EIND reg
mcu_base = <num> ; # MCU control block in ATxmega devices
nvm_base = <num> ; # NVM controller in ATxmega devices
ocd_base = <num> ; # OCD module in AVR8X/UPDI devices
ocdrev = <num> ; # JTAGICE3 parameter from ATDF files
pgm_enable = <instruction format> ;
chip_erase = <instruction format> ;
# parameters for bootloaders
autobaud_sync = <num> ; # autobaud detection byte, default 0x30
memory <memory>
paged = <yes/no> ; # yes/no (flash only, do not use for EEPROM)
offset = <num> ; # memory offset
size = <num> ; # bytes
page_size = <num> ; # bytes
num_pages = <num> ; # numeric
initval = <num> ; # factory setting of fuses and lockbits
bitmask = <num> ; # bits used (only in fuses and lockbits)
n_word_writes = <num> ; # TPI only: if set, number of words to write
min_write_delay = <num> ; # micro-seconds
max_write_delay = <num> ; # micro-seconds
readback = <num> <num> ; # pair of byte values
readback_p1 = <num> ; # byte value (first component)
readback_p2 = <num> ; # byte value (second component)
pwroff_after_write = <yes/no> ; # yes/no
mode = <num> ; # STK500 v2 file parameter from ATDF files
delay = <num> ; # "
blocksize = <num> ; # "
readsize = <num> ; # "
read = <instruction format> ;
write = <instruction format> ;
read_lo = <instruction format> ;
read_hi = <instruction format> ;
write_lo = <instruction format> ;
write_hi = <instruction format> ;
loadpage_lo = <instruction format> ;
loadpage_hi = <instruction format> ;
writepage = <instruction format> ;
;
;
If any of the above parameters are not specified, the default value of 0
is used for numerics (except for mcuid, hvupdi_variant,
ocdrev, initval and bitmask, all of which default to
-1, and for autobaud_sync which defaults to 0x30) or the empty
string "" for string values. If a required parameter is left empty,
AVRDUDE will complain. Almost all occurrences of numbers (with the
exception of pin numbers and where they are separated by space, e.g., in
signature and readback) can also be given as simple expressions involving
arithemtic and bitwise operators.