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Source at commit d4fe0277c28563f870334b68dde373751ace8197 created 13 years 4 months ago.
By Werner Almesberger, atspi-txrx: option -T <delta_MHz> to emit a constant wave
1#
2# Tags:
3#
4# F Footprint name (must be first)
5# N Data sheet identifier (N tag of BOOKSHELF; can be omitted if equal to F)
6#
7
8# TI meandered inverted F antenna
9F: meander
10N: AN043
11
12# Mini-USB B receptable (SMT; almost generic)
13F: mini_usb_b
14
15# "Generic" simple QFN
16F: qfn
17#
18# The information for these packages comes from various sources:
19#
20# - the C8051F326 data sheet, for the QFN28 footprint (N: mcu)
21# - the AT86F326 data sheet, for the QFN32 package dimensions (N: txrx)
22# - Atmel's general recommendations for QFN land patterns (N: atmel-qfn)
23# - NXP's SOT617-1 and SOT617-3, for package and land pattern:
24# http://www.nxp.com/package/SOT617-1.html
25# http://www.nxp.com/package/SOT617-3.html
26#
27# Known bugs:
28#
29# - we should distribute the solder paste in an array of small
30# squares instead of just covering the whole center pad.
31# - really ought to merge all the various QFN definitions (we have more
32# over at gta02-core) into a single QFN file with a big mean table of
33# everything
34#
35N: sot617-3-lp
36
37# "Generic" simple QFP (for now, just for Silabs' C8051F320)
38F: qfp
39
40# Common 4-pin crystal SMT package (pins 1 and 4 are on a short side, pin
41# numbering is counter-clockwise)
42F: xtal-4
43N: nx3225sa
44
45# 0805 package with six pads
46F: 0805-6
47
48#
49# MMCX board-edge (SMT) female jack
50#
51# Design based on Molex 73415-0961, This is also compatible with:
52#
53# Tyco 1408152-1
54# Emerson 135-3711-801
55# Molex 73415-1261
56# Amphenol 262107
57#
58# Note: footprint changes with PCB thickness !
59#
60# Known bugs:
61# - keepout area marker should be on comment layer
62# - pin 2 should be off-center and extend such that proper trace can be
63# connected directly
64#
65F: mmcx-f-edge
66N: 73415-0961
67
68# USB A plug for SMT
69#
70# Note: the signal pads are enlarged by 0.2 mm and their center is shifted by
71# 0.1 mm with respect to the reference.
72#
73# According to the data sheet, the leads terminate at (2.00+/-0.10 mm)/2+
74# 2.48 mm = 3.48+/-0.10 mm from the center. The reference footprint puts the
75# edge of the pads at (2.00+/-0.10 mm)/2+2.6 mm = 3.6 mm+/-0.10 mm, so the
76# maximum lead end could be at 3.58 mm while the minimum pad edge could be at
77# 3.5 mm.
78#
79# Assuming that the pad is intended to extend a bit beyond the lead, we need
80# to add 0.2 mm to compensate for these tolerances. (The pad tolerance may not
81# be intended to be used this way, however, we still have to consider small
82# errors in registration, which also amount to about 0.1 mm, so the calculation
83# remains valid.)
84#
85F: usb_a_plug_smt
86
87# SOT-323 package with counter-clockweise or clockwise pin assignment
88F: sot-323
89N: mmst3904
90
91# U.FL/Micro Coax/... receptacle
92F: u-fl-receptacle
93N: u.fl-receptacle
94

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