2 # Copyright 2011 by Bdale Garbee <bdale@gag.com>. GPLv2
4 # Program to emit PCB footprint for QFN24 package used by ITG-3200 gyro
7 # dimensions in mm from Invensense PS-ITG-3200-00-01.4.pdf
9 PinResist = PinWidth + (2 * 0.07)
16 # we're going to use the 1/100 of a mil fundamental unit form
18 return int( mm / 25.4 * 1000.0 * 100.0 + 0.5 )
20 print '# author: Bdale Garbee'
21 print '# email: bdale@gag.com'
22 print '# dist-license: GPL 2'
23 print '# use-license: unlimited'
25 print 'Element[0x0 "ITG3200" "" "" 0 0 0 0 0 100 0x0]'
29 for pin in range (1,7):
31 mm2mils100((-3.5 + pin) * PinSpacing), \
32 mm2mils100(-Overall/2 + PinWidth/2), \
33 mm2mils100((-3.5 + pin) * PinSpacing), \
34 mm2mils100(-Overall/2 + PinHeight - PinWidth/2), \
35 mm2mils100(PinWidth), \
36 mm2mils100(PinSpacing - PinWidth), \
37 mm2mils100(PinResist), \
38 '"pin%i"' % (19-pin), '"%i"' % (19-pin), '0x0000]'
41 mm2mils100((-3.5 + pin) * PinSpacing), \
42 mm2mils100(+Overall/2 - PinHeight + PinWidth/2), \
43 mm2mils100((-3.5 + pin) * PinSpacing), \
44 mm2mils100(+Overall/2 - PinWidth/2), \
45 mm2mils100(PinWidth), \
46 mm2mils100(PinSpacing - PinWidth), \
47 mm2mils100(PinResist), \
48 '"pin%i"' % pin, '"%i"' % pin, '0x0000]'
51 mm2mils100(Overall/2 - PinHeight + PinWidth/2), \
52 mm2mils100((-3.5 + pin) * PinSpacing), \
53 mm2mils100(Overall/2 - PinWidth/2), \
54 mm2mils100((-3.5 + pin) * PinSpacing), \
55 mm2mils100(PinWidth), \
56 mm2mils100(PinSpacing - PinWidth), \
57 mm2mils100(PinResist), \
58 '"pin%i"' % (13-pin), '"%i"' % (13-pin), '0x0000]'
61 mm2mils100(-Overall/2 + PinWidth/2), \
62 mm2mils100((-3.5 + pin) * PinSpacing), \
63 mm2mils100(-Overall/2 + PinHeight - PinWidth/2), \
64 mm2mils100((-3.5 + pin) * PinSpacing), \
65 mm2mils100(PinWidth), \
66 mm2mils100(PinSpacing - PinWidth), \
67 mm2mils100(PinResist), \
68 '"pin%i"' % (18+pin), '"%i"' % (18+pin), '0x0000]'
70 print ' ElementArc[',\
71 mm2mils100(-(Overall/2)), \
72 mm2mils100(Overall/2), \
73 '500 500 0 360 1000 ]'