Difference between revisions of "Tutorials:Cadence:AdvancedTopics"
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== Pad frame == | == Pad frame == | ||
| − | One tiny chip unit is 1.5mm x 1.5mm. The pad frame provided here has a total of 40 pins. | + | One tiny chip unit is 1.5mm x 1.5mm. The pad frame provided here has a total of 40 pins. |
| + | The 4 corner pins are used for VDD and GND (note the +/- symbols in the layout) | ||
| + | and the remaining 36 pins are available for I/O. | ||
To use the pad frame, please do the following steps: | To use the pad frame, please do the following steps: | ||
Revision as of 21:54, 14 December 2010
Advanced Topics
Pad frame
One tiny chip unit is 1.5mm x 1.5mm. The pad frame provided here has a total of 40 pins. The 4 corner pins are used for VDD and GND (note the +/- symbols in the layout) and the remaining 36 pins are available for I/O.
To use the pad frame, please do the following steps:
- Download Padframe_C5N.tgz into $HOME/cadence/library.
- Type "cd $HOME/cadence/library".
- Type "tar -xzvf Padframe_C5N.tgz". This will extract the pad library.
- Type "cd ..".
-
Edit cds.lib and add the following line:
DEFINE pad library/pad
- Execute virtuoso. The pad library will now appear in the Library Manager.
The pad frame layout is shown below.
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Please use this information at your own risk--and any attempt to use this information is at your own risk--we recommend using it on a copy of your data to be sure you understand what it does and under what conditions. Keep your master intact until you are personally satisfied with the use of this information within your environment."
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