Scripted version of qfn-76 9x9 (3.8x3.8 EP)

This footprint is not used by any symbol. Still included as the datasheet is valid.

Script PR: https://github.com/pointhi/kicad-footprint-generator/pull/250

https://www.marvell.com/documents/bqcwxsoiqfjkcjdjhkvc/

QFN-76-1EP_9x9mm_P0.4mm_EP3.8x3.8mm:
  device_type: 'QFN'
  #manufacturer: 'man'
  #part_number: 'mpn'
  size_source: 'https://www.marvell.com/documents/bqcwxsoiqfjkcjdjhkvc/'
  ipc_class: 'qfn' # 'qfn_pull_back'
  #ipc_density: 'least' #overwrite global value for this device.
  # custom_name_format:
  body_size_x:
    nominal: 9
    tolerance: 0
  body_size_y:
    nominal: 9
    tolerance: 0
  body_height:
    minimum: 0.8
    nominal: 0.85
    maximum: 1

  lead_width:
    minimum: 0.15
    nominal: 0.2
    maximum: 0.25
  lead_len:
    nominal: 0.4
    tolerance: 0.1

  EP_size_x:
    nominal: 3.8
    tolerance: 0.2
  EP_size_y:
    nominal: 3.8
    tolerance: 0.2
  # EP_paste_coverage: 0.65
  EP_num_paste_pads: [3, 3]
  #heel_reduction: 0.1 #for relatively large EP pads (increase clearance)

  thermal_vias:
    count: [3, 3]
    drill: 0.2
    # min_annular_ring: 0.15
    paste_via_clearance: 0.1
    # EP_num_paste_pads: [2, 2]
    paste_between_vias: 1
    paste_rings_outside: 1
    #EP_paste_coverage: 0.6
    grid: [1.2, 1.2]
    # bottom_pad_size:
    paste_avoid_via: True

  pitch: 0.4
  num_pins_x: 19
  num_pins_y: 19