2 # Copyright 2007 by Bdale Garbee <bdale@gag.com>. GPLv2
4 # Program to emit PCB footprint for QFN36 package used by TI CC1111
7 # dimensions in mm from the TI cc1111f32.pdf datasheet
17 # we're going to use the 1/100 of a mil fundamental unit form
19 return int( mm / 25.4 * 1000.0 * 100.0 + 0.5 )
21 print 'Element[0x0 "QFN36" "" "" 0 0 0 0 0 100 0x0]'
24 # pad under the chip, must be grounded
30 mm2mils100(CoreSquare), \
31 mm2mils100((CoreSquare - PinSquare) / 2), \
32 mm2mils100(CoreSquare), \
33 '"pin37" "37" 0x0100]'
35 # vias in the ground pad under the chip
36 for via in range (-1,2):
38 mm2mils100(-CoreSquare / 3), \
39 mm2mils100(via * CoreSquare / 3), \
44 '"pin37" "37" 0x0002]'
47 mm2mils100(via * CoreSquare / 3), \
52 '"pin37" "37" 0x0002]'
54 mm2mils100(CoreSquare / 3), \
55 mm2mils100(via * CoreSquare / 3), \
60 '"pin37" "37" 0x0002]'
63 for pin in range (1,10):
65 mm2mils100(-2.5 + pin * PinSpacing), \
66 mm2mils100(-Overall/2 + PinWidth/2), \
67 mm2mils100(-2.5 + pin * PinSpacing), \
68 mm2mils100(-Overall/2 + PinHeight - PinWidth/2), \
69 mm2mils100(PinWidth), \
70 mm2mils100(PinSpacing - PinWidth), \
71 mm2mils100(PinWidth + 0.1), \
72 '"pin%i"' % (28-pin), '"%i"' % (28-pin), '0x0000]'
75 mm2mils100(-2.5 + pin * PinSpacing), \
76 mm2mils100(+Overall/2 - PinHeight + PinWidth/2), \
77 mm2mils100(-2.5 + pin * PinSpacing), \
78 mm2mils100(+Overall/2 - PinWidth/2), \
79 mm2mils100(PinWidth), \
80 mm2mils100(PinSpacing - PinWidth), \
81 mm2mils100(PinWidth + 0.1), \
82 '"pin%i"' % pin, '"%i"' % pin, '0x0000]'
85 mm2mils100(Overall/2 - PinHeight + PinWidth/2), \
86 mm2mils100(-2.5 + pin * PinSpacing), \
87 mm2mils100(Overall/2 - PinWidth/2), \
88 mm2mils100(-2.5 + pin * PinSpacing), \
89 mm2mils100(PinWidth), \
90 mm2mils100(PinSpacing - PinWidth), \
91 mm2mils100(PinWidth + 0.1), \
92 '"pin%i"' % (19-pin), '"%i"' % (19-pin), '0x0000]'
95 mm2mils100(-Overall/2 + PinWidth/2), \
96 mm2mils100(-2.5 + pin * PinSpacing), \
97 mm2mils100(-Overall/2 + PinHeight - PinWidth/2), \
98 mm2mils100(-2.5 + pin * PinSpacing), \
99 mm2mils100(PinWidth), \
100 mm2mils100(PinSpacing - PinWidth), \
101 mm2mils100(PinWidth + 0.1), \
102 '"pin%i"' % (27+pin), '"%i"' % (27+pin), '0x0000]'
104 print ' ElementArc[',\
107 '500 500 0 360 1000 ]'