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ben-wpan/modules/qfn.fpd
Werner Almesberger 3a59aef242 qfn.fpd: corrected center pads, and general cleanup
- qfn.fpd: package names now also include the variant (for now: SiLabs,
  VHHD-2, or VHHD-6)
- qfn.fpd: inlarged center pad of QFN28-SiLabs (was QFN28) from 3.25 mm
  to 3.3 mm
- qfn.fpd: reverted QFN32-VHHD6 (was QFN32) to original geomtry
- qfn.fpd: introduced QFN32-VHHD2 for the ATmega32U2
- qfn.fpd: distribute solder paste in little islands (in progress)
- qfn.fpd: deleted stray unused vector in root frame
2011-01-23 01:15:18 -03:00

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/* MACHINE-GENERATED ! */
frame paste_pad {
__0: vec @(SX/2, SY/2)
__1: vec @(-SX/2, -SY/2)
pad " " . __0 paste
}
frame paste {
set x = SE*(xi-SNX/2-0.5)
set y = SE*(yi-SNY/2-0.5)
loop xi = 1, SNX
loop yi = 1, SNY
__0: vec @(x, y)
frame paste_pad .
}
frame center {
set pin = pins+1
__0: vec @(X2/2, Y2/2)
__1: vec @(-X2/2, -Y2/2)
pad "$pin" . __0 bare
frame paste @
}
frame pad {
set px = (dx*X1+dy*Y1)/2
set py = (dy*X1+dx*Y1)/2
set pin = side*pins/4+i+1
__0: vec @(px, py)
__1: vec @(-px, -py)
pad "$pin" __0 .
__2: vec @(px, -py)
}
frame side {
set pos = i-(pins/4-1)/2
loop i = 0, pins/4-1
__0: vec @(E*pos*dx, E*pos*dy)
frame pad .
}
frame pads {
table
{ side, dx, dy }
{ 0, 0, -1 }
{ 1, 1, 0 }
{ 2, 0, 1 }
{ 3, -1, 0 }
__0: vec @(dy*C1/2, -dx*C2/2)
frame side .
}
frame index {
}
frame outline {
table
{ index, dx, _, dy }
{ 1, -1, 0, 0 }
{ 0, 0, 0, -1 }
{ 0, 1, 0, 0 }
{ 0, 0, 0, 1 }
set mx = dx*C1/2
set my = dy*C2/2
set cx = mx+my
set cy = my-mx
set ax = -Y1/2*dx
set ay = -Y1/2*dy
set bx = -Y1/2*dy
set by = Y1/2*dx
__0: vec @(cx, cy)
w: vec .(ax, ay)
line __0 . w
__2: vec __0(bx, by)
line __0 . w
__1: vec .(index*(ax-bx), index*(ay-by))
line __2 . w
}
package "QFN$pins-$variant"
unit mm
table
{ pins, variant, X1, Y1, X2, Y2, E, C1, C2, SE, SNX, SNY, SX, SY }
{ 28, "SiLabs", 0.25mm, 0.9mm, 3.3mm, 3.3mm, 0.5mm, 4.8mm, 4.8mm, 1.1mm, 3, 3, 0.9mm, 0.9mm }
{ 32, "VHHD-2", 0.26mm, 0.69mm, 3.7mm, 3.7mm, 0.5mm, 5.1mm, 5.1mm, 0.8mm, 3, 3, 0.5mm, 0.5mm }
{ 32, "VHHD-6", 0.26mm, 0.69mm, 3.4mm, 3.4mm, 0.5mm, 5.1mm, 5.1mm, 1.2mm, 2, 2, 0.7mm, 0.7mm }
set w = 5mil
frame pads @
frame center @
frame outline @
measy side.__0 >> side.__0 3mm
meas side.__0 -> side.__0 -1mm
measy center.__1 >> center.__0 2.3mm
measy pad.__1 >> pad.__1 3.5mm
measy pad.__1 -> pad.__0 1mm
meas pad.__1 -> pad.__2 -1mm
measy paste_pad.__1 -> paste_pad.__0 1.8mm
measy paste.__0 -> paste.__0 -C1
measy paste_pad.__1 >> paste_pad.__0 -C1-1mm