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Source at commit 1d7eccb06b61f239b9671617488f33910286f0f1 created 10 years 1 month ago. By Werner Almesberger, dump.c: add dumping of %iprint | |
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1 | /* |
2 | * Example of a QFN package (and general construction site to experiment with |
3 | * fped features during development) |
4 | * |
5 | * Everything you see here is likely to change sooner or later. |
6 | * |
7 | * http://www.nxp.com/acrobat/packages/footprint/SOT616-1_fp_reflow.pdf |
8 | */ |
9 | |
10 | frame pad_up { |
11 | c: vec @(-D/2, 0mm) |
12 | o: vec c(D, C) |
13 | set pad = n+1 |
14 | pad "$pad" c . |
15 | } |
16 | |
17 | frame pads { |
18 | loop n = 0, N/4-1 |
19 | |
20 | vec @(P*(n-(N/4-1)/2), -Ay/2) |
21 | frame pad_up . |
22 | |
23 | } |
24 | |
25 | |
26 | part "qfn" |
27 | |
28 | |
29 | set N = 24 |
30 | |
31 | /* |
32 | * Note that this table is not a great example because it contains lots of |
33 | * fields we don't really need for iterations. But it's useful for driving |
34 | * the GUI to extremes. |
35 | */ |
36 | |
37 | table |
38 | { P, Ax, Ay, Bx, By, C, D, SLx, SLy, SPx_tot, SPy_tot, SPx, SPy, Gx, Gy, Hx, Hy } |
39 | { 0.5mm, 5mm, 5mm, 3.2mm, 3.2mm, 0.9mm, 0.24mm, 2.1mm, 2.1mm, 1.2mm, |
40 | 1.2mm, 0.45mm, 0.45mm, 4.3mm, 4.3mm, 5.25mm, 5.25mm } |
41 | |
42 | h_x0y0: vec @(-Hx/2, -Hy/2) |
43 | h_x1y1: vec .(Hx, Hy) |
44 | rect h_x0y0 h_x1y1 8mil |
45 | |
46 | /* |
47 | * we can't draw the package outline on the silk screen for it would print |
48 | * over the pads. |
49 | */ |
50 | #if 0 |
51 | g_x0y0: vec @(-Gx/2, -Gy/2) |
52 | g_x1y1: vec .(Gx, Gy) |
53 | #endif |
54 | |
55 | frame pads @ |
56 | |
57 | // ARC, just for testing |
58 | |
59 | c: vec @(-1mm, 1mm) |
60 | r: vec c(0mm, 0.5mm) |
61 | e: vec c(-0.5mm, 0mm) |
62 | arc c r e 2mil |
63 | |
64 | r2: vec c(0mm, 0.8mm) |
65 | circ c r2 5mil |
66 | |
67 | /* |
68 | x1 = 1+2*3 |
69 | x2 = (1+2)*3 |
70 | x3 = 1-(2+3) |
71 | */ |
72 | |
73 | measy pad_up.c -> pad_up.o 0.2mm |
74 |
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