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
    archnum          = <num>;                 # avr-gcc architecture number for the part
    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
    stk500_devcode   = <num>;                 # numeric
    avr910_devcode   = <num>;                 # numeric
    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 programming
    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
    syscfg_base      = <num>;                 # Chip revision ID 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
    factory_fcpu     = <num>;                 # F_CPU in Hz on reset and factory-set fuses

    memory <memstr>
        paged           = <yes/no>;           # yes/no (flash of classic parts only)
        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>;
    ;
;