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qfn.fpd: corrected center pads, and general cleanup

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- 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
This commit is contained in:
Werner Almesberger 2011-01-23 00:49:20 -03:00
parent 2dab09923e
commit 3a59aef242
1 changed files with 31 additions and 28 deletions
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59
modules/qfn.fpd
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@ -1,26 +1,31 @@
/* 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
set x = D2+2*go
set y = E2+2*go
set go = 5mil
set gi = 5mil
set spx = D2-2*gi
set spy = E2-2*gi
__0: vec @(x/2, y/2)
__1: vec @(-x/2, -y/2)
__0: vec @(X2/2, Y2/2)
__1: vec @(-X2/2, -Y2/2)
pad "$pin" . __0 bare
__2: vec @(spx/2, -spy/2)
__3: vec @(-spx/2, spy/2)
pad "$pin" . __2 paste
frame paste @
}
frame pad {
@ -93,28 +98,26 @@ frame outline {
line __2 . w
}
package "QFN$pins"
package "QFN$pins-$variant"
unit mm
table
{ pins, X1, Y1, E, C1, C2, D2, E2 }
{ 28, 0.25mm, 0.9mm, 0.5mm, 4.8mm, 4.8mm, 3.15mm, 3.15mm }
{ 32, 0.29mm, 0.9mm, 0.5mm, 5.1mm, 5.1mm, 3.3mm, 3.3mm }
set X2 = X1+(pins/4-1)*E
set Y2 = X2
{ 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
__0: vec @(D2/2, E2/2)
frame pads @
frame center @
frame outline @
measy side.__0 >> side.__0 3mm
meas side.__0 -> side.__0 -1mm
measy center.__1 >> center.__0 2mm
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 center.__2 >> center.__3 -2mm
measy paste_pad.__1 -> paste_pad.__0 1.8mm
measy paste.__0 -> paste.__0 -C1
measy paste_pad.__1 >> paste_pad.__0 -C1-1mm