Add DFN8 footprint (for lm293 comparators)

Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/packages/Makefile b/packages/Makefile
index 60ee226fa1f7f4075ee645bee5ef3af5511fa40b..b104e5cb51f2615b4f5211b99eab16e528cc9d79 100644 (file)
--- a/packages/Makefile
+++ b/packages/Makefile
@@ -27,7 +27,8 @@ FOOTPRINTS= \
        TI-QFN32.fp \
        NDK32.fp \
        sma-edge.fp \
-       MO-220.fp
+       MO-220.fp \
+       dfn8.fp
 
 .5c.fp:
        nickle $*.5c > $@

diff --git a/packages/dfn8.5c b/packages/dfn8.5c
new file mode 100644 (file)
index 0000000..37baa24
--- /dev/null
+++ b/packages/dfn8.5c
@@ -0,0 +1,72 @@
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+load "footprint.5c"
+import Footprint;
+
+real pad_width = 0.30;
+real pad_height = 0.75;
+real pad_spacing = 0.50;
+
+real pad_y_off = 1.4;
+
+real center_width = 1.6;
+real center_height = 0.45;
+
+real package_width = 2;
+real package_height = 2;
+
+real num_pad = 4;      /* per side */
+
+element_start("dfn8");
+
+real pad_off(int n) {
+       return pad_spacing * (n - (num_pad - 1) / 2);
+}
+
+real dot_off = - .3;
+
+for (pad = 0; pad < num_pad; pad++) {
+       /* top side (1-4) */
+
+       pad_mm(pad_off(pad),
+              -pad_y_off,
+              pad_width,
+              pad_height,
+              sprintf("%d", pad + 1),
+              sprintf("%d", pad + 1));
+       
+       /* bottom side (5-8) */
+
+       pad_mm(-pad_off(pad),
+              pad_y_off,
+              pad_width,
+              pad_height,
+              sprintf("%d", pad + 5),
+              sprintf("%d", pad + 5));
+       
+}
+
+pad_mm(0, 0, center_width, center_height, "GND", "GND");
+
+rect(-package_width/2, -package_height/2,
+     package_width, package_height);
+
+line(-package_width/2 + dot_off, -package_height/2 + dot_off,
+     -package_width/2 + dot_off, -package_height/2 + dot_off);
+
+element_end();