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71 lines
1.3 KiB
Plaintext
71 lines
1.3 KiB
Plaintext
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/*
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* Example of a QFN package (and general construction site to experiment with
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* fped features during development)
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*
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* Everything you see here is likely to change sooner or later.
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*
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* http://www.nxp.com/acrobat/packages/footprint/SOT616-1_fp_reflow.pdf
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*/
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frame pad_up {
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c: vec @(-D/2, 0mm)
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vec .(0mm, C)
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meas c . 0.2mm
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vec c(D, C)
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set pad = n+1
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pad "$pad" c .
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}
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frame pads {
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loop n = 0, N/4-1
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vec @(P*(n-(N/4-1)/2), -Ay/2)
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frame pad_up .
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}
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set N = 24
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/*
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* Note that this table is not a great example because it contains lots of
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* fields we don't really need for iterations. But it's useful for driving
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* the GUI to extremes.
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*/
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table
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{ P, Ax, Ay, Bx, By, C, D, SLx, SLy, SPx_tot, SPy_tot, SPx, SPy, Gx, Gy, Hx, Hy }
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{ 0.5mm, 5mm, 5mm, 3.2mm, 3.2mm, 0.9mm, 0.24mm, 2.1mm, 2.1mm, 1.2mm,
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1.2mm, 0.45mm, 0.45mm, 4.3mm, 4.3mm, 5.25mm, 5.25mm }
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h_x0y0: vec @(-Hx/2, -Hy/2)
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h_x1y1: vec .(Hx, Hy)
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rect h_x0y0 h_x1y1 8mil
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/*
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* we can't draw the package outline on the silk screen for it would print
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* over the pads.
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*/
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#if 0
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g_x0y0: vec @(-Gx/2, -Gy/2)
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g_x1y1: vec .(Gx, Gy)
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#endif
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frame pads @
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// ARC, just for testing
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c: vec @(-1mm, 1mm)
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r: vec c(0mm, 0.5mm)
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e: vec c(-0.5mm, 0mm)
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arc c r e 2mil
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r2: vec c(0mm, 0.8mm)
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circ c r2 5mil
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/*
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x1 = 1+2*3
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x2 = (1+2)*3
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x3 = 1-(2+3)
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*/
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