merge symbols and footprints needed for TeleTerra

[hw/altusmetrum] / packages / TI-QFN36.py

diff --git a/packages/TI-QFN36.py b/packages/TI-QFN36.py
new file mode 100755 (executable)
index 0000000..877143c
--- /dev/null
+++ b/packages/TI-QFN36.py
@@ -0,0 +1,136 @@
+#!/usr/bin/python
+# Copyright 2008 by Bdale Garbee <bdale@gag.com>.  GPLv2
+#
+# Program to emit PCB footprint for QFN36 package used by TI CC1111
+#
+
+# dimensions in mm from the TI cc1111f32.pdf datasheet
+PinWidth = 0.28                
+PinResist = 0.381              # width of gap in solder resist over pad
+PinHeight = 0.75
+PinSpacing = 0.50
+Overall = 6.30
+GndSquare = 4.40
+CoreSquare = 3.7592            # resist gaps and paste spots over ground tab
+PinSquare = 4.80
+
+import sys
+
+# we're going to use the 1/100 of a mil fundamental unit form
+def mm2mils100( mm ):
+       return int( mm / 25.4 * 1000.0 * 100.0 + 0.5 )
+
+print '# author: Bdale Garbee'
+print '# email: bdale@gag.com'
+print '# dist-license: GPL 2'
+print '# use-license: unlimited'
+
+print 'Element[0x0 "QFN36" "" "" 0 0 0 0 0 100 0x0]'
+print "("
+
+# pad under the chip, must be grounded
+print '   Pad[',\
+       mm2mils100(0), \
+       mm2mils100(0), \
+       mm2mils100(0), \
+       mm2mils100(0), \
+       mm2mils100(GndSquare), \
+       0, \
+       0, \
+       '"pin37" "37" "square,nopaste"]'
+
+# vias in the ground pad under the chip
+for viarow in range (-1,2):
+  for viacol in range (-1,2):
+    print '   Pin[',\
+       mm2mils100(2 * viacol * CoreSquare / 5), \
+       mm2mils100(2 * viarow * CoreSquare / 5), \
+       2900, \
+       2500, \
+       0, \
+       1500, \
+       '"pin37" "37" 0x0002]'
+
+# break pad under chip into a grid to control the resist and paste masks
+for viarow in range (-2, 3):
+  for viacol in range (-2, 3):
+    if (viarow in (-2, 0, 2)) and (viacol in (-2, 0, 2)):
+      # copper sub-square with resist over vias
+      print '   Pad[',\
+       mm2mils100(viacol * CoreSquare / 5), \
+       mm2mils100(viarow * CoreSquare / 5), \
+       mm2mils100(viacol * CoreSquare / 5), \
+       mm2mils100(viarow * CoreSquare / 5), \
+       mm2mils100((CoreSquare)/5), \
+       0, \
+       0, \
+       '"pin37" "37" "square,nopaste"]'
+    else:
+      # copper sub-square without resist
+      print '   Pad[',\
+       mm2mils100(viacol * CoreSquare / 5), \
+       mm2mils100(viarow * CoreSquare / 5), \
+       mm2mils100(viacol * CoreSquare / 5), \
+       mm2mils100(viarow * CoreSquare / 5), \
+       mm2mils100((CoreSquare)/5), \
+       0, \
+       mm2mils100((CoreSquare)/5), \
+       '"pin37" "37" "square,nopaste"]'
+      # copper spot to control paste mask generation
+      print '   Pad[',\
+       mm2mils100(viacol * CoreSquare / 5), \
+       mm2mils100(viarow * CoreSquare / 5), \
+       mm2mils100(viacol * CoreSquare / 5), \
+       mm2mils100(viarow * CoreSquare / 5), \
+       1500, \
+       0, \
+       mm2mils100((CoreSquare)/5), \
+       '"pin37" "37" "square"]'
+
+# pins
+for pin in range (1,10):
+    print '   Pad[',\
+       mm2mils100(-2.5 + pin * PinSpacing), \
+       mm2mils100(-Overall/2 + PinWidth/2), \
+       mm2mils100(-2.5 + pin * PinSpacing), \
+       mm2mils100(-Overall/2 + PinHeight - PinWidth/2), \
+       mm2mils100(PinWidth), \
+       mm2mils100(PinSpacing - PinWidth), \
+       mm2mils100(PinResist), \
+       '"pin%i"' % (28-pin), '"%i"' % (28-pin), '0x0000]'
+
+    print '   Pad[',\
+       mm2mils100(-2.5 + pin * PinSpacing), \
+       mm2mils100(+Overall/2 - PinHeight + PinWidth/2), \
+       mm2mils100(-2.5 + pin * PinSpacing), \
+       mm2mils100(+Overall/2 - PinWidth/2), \
+       mm2mils100(PinWidth), \
+       mm2mils100(PinSpacing - PinWidth), \
+       mm2mils100(PinResist), \
+       '"pin%i"' % pin, '"%i"' % pin, '0x0000]'
+
+    print '   Pad[',\
+       mm2mils100(Overall/2 - PinHeight + PinWidth/2), \
+       mm2mils100(-2.5 + pin * PinSpacing), \
+       mm2mils100(Overall/2 - PinWidth/2), \
+       mm2mils100(-2.5 + pin * PinSpacing), \
+       mm2mils100(PinWidth), \
+       mm2mils100(PinSpacing - PinWidth), \
+       mm2mils100(PinResist), \
+       '"pin%i"' % (19-pin), '"%i"' % (19-pin), '0x0000]'
+
+    print '   Pad[',\
+       mm2mils100(-Overall/2 + PinWidth/2), \
+       mm2mils100(-2.5 + pin * PinSpacing), \
+       mm2mils100(-Overall/2 + PinHeight - PinWidth/2), \
+       mm2mils100(-2.5 + pin * PinSpacing), \
+       mm2mils100(PinWidth), \
+       mm2mils100(PinSpacing - PinWidth), \
+       mm2mils100(PinResist), \
+       '"pin%i"' % (27+pin), '"%i"' % (27+pin), '0x0000]'
+
+print '   ElementArc[',\
+       mm2mils100(-2.6), \
+       mm2mils100(2.6), \
+       '500 500 0 360 1000 ]'
+print ")"