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Magic Mailing List |
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From: Eric L T Tan (eltan AT Glue DOT umd.edu) Date: Fri Oct 26 2001 - 11:22:16 EDT
Hi magic folks,
This is something unrelated to magic itself, but
I don't know where else to ask, and I believe some
of you have done this kind of thing in magic. So if
you could give me some directions I would appreciate
it very very much.
I want to draw Fowler-Nordheim tunneling cahnnel
in magic. According to Chris Diorio's paper he uses
n+ diffusion in n-well, thus creating a thin-OX under
poly. But whenever I want to draw poly over nsd
(n-substrate-ndiff), the nsd yields and no active
(CAA) region will be under the poly. I wonder how
do you overcome this problem? The cif reads,
L CWN;
B 108 104 102 120;
L CSN;
B 80 72 104 124;
L CAA;
B 64 24 104 140;
B 52 12 110 122;
B 64 20 104 106;
L CPG;
B 52 12 58 122;
If you see, CAA is divided into 3 parts, no CAA
under poly.
Later I tried different ways, and one of them seems
to work, but I'm not sure. I first draw nwell, and
I draw nselect inside the well, and paint fet inside
the nselect, and get rid of poly of the fet by ctrl-D
over other poly, and I put generic contact, and route
metal1 to the contact, and then draw thin poly from
outside to overlap the fet a little bit. Now the cif
reads,
L CWN;
B 128 112 112 120;
L CSN;
B 96 80 112 120;
L CAA;
B 64 48 112 120;
L CPG;
B 60 12 62 122;
L CCC;
B 8 8 128 120;
L CM1;
B 96 24 164 120;
I am not sure if this is going to work. Any comment
or suggestion will help!
Thanks!!
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