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Anyone using LayoutEditor's parametric cells?

by anonymous - 23 Nov 2009, 14:51 CET

I am very interested in getting in contact with anyone who is willing to share some example code of parametric cells for transistors, guard rings, etc.

Any other sample code is welcome too of course (e.g. some sample GDS files, CMOS technology macros, DRC setups, etc.).

I am working hard to get started in my first 0.7u CMOS MPW (On-semi), but I am finding it difficult to get everything configured and up and running (at least I am afraid of making mistakes, so I'd appreciate any sample file that could help me!).

Many thanks in advance for your support. In return, I will share whatever I will make in the course of my project.

by Juergen Thies - 23 Nov 2009, 15:24 CET

Have you seen the examples/libraries shipped with the LayoutEditor:

The openCellLibrary is a standard cell library for a CMOS process. All macros (layer setup, drc, 3d view, etc.) are included.

The qucs library includes a couple of macros to create parametric cells for microwaves pcb/thinfilm circuits.

If you need more help, please feel free to contact me.

by anonymous - 25 Nov 2009, 13:59 CET

Thanks, I will have a look at the openCellLibrary for better understanding about layer stetup, DRC, etc.

About the parametric cells: I have indeed seen the microwave example, but I was wondering if anyone was willing to share e.g. a parameterized instance of a CMOS transistor (similar to pcells: input W/L, number of fingers, guardring yes/no, etc., output GDSII structure). Can this be shared as an example as well, if available?

by Juergen Thies - 25 Nov 2009, 16:51 CET

Do you have design rules for a CMOS transistor which can be made public? If so, please send it to me ( ideas@LayoutEditor.net ). I will generate parameterized instance for it and add it as an example to the LayoutEditor.

by anonymous - 26 Nov 2009, 9:15 CET

Thanks! I emailed some design rules and models yesterday. Please let me know in case you require any further info. Looking forward to the parameterized example when available.

by Juergen Thies - 26 Nov 2009, 9:52 CET

Thanks, i will add some setup macros and parameterized transitor examples for the MOSIS Scalable CMOS Design Rules with the next release. I will email it to you in advance in the next days.

by anonymous - 26 Nov 2009, 12:08 CET

Many thanks in advance for your support in this and I am looking forward to the examples in the next days!

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The LayoutEditor™ is a program to design and edit layouts for MEMS/IC fabrication and CMOS IC design .Designing these layouts require a high precision. In IC design a sufficient resolution and a possibility of a high scaling is required. The resolution of the LayoutEditor can be set in a wide range and is normally set to 1 nano meter. A higher resolution makes no sense due to atomar structures. With this resolution the LayoutEditor can draw elements up to 4 meters. In many IC design houses this is enough for IC/MEMS which extend usually less than 0.1 meters. The productions of MEMS/IC is done in many layers. For each of these physical CAD layers a belonging layer had to exist in the drawing. Additional logical layers are required for describing/naming purpose. So a lot of layers are needed. By default the LayoutEditor is limited to 128 layers. But it can easily be adjusted, if more layers are required. IC Designs often contain a plenty of repeating structures. Essential for micro fabrication of these designs is therefor a hierarchical design. This means, that the complete repeating structure only exists once in a single cell. These cell is then referred multiple times in the main drawing.
Beside the above mems packaging mentioned IC design fundaments it is important to have sophisticated functions to handle all drawing elements. The layout handler has all required functions: all basic design functions, all angle elements, boolean operations, macros, fontgenerator, design rule checker, mems tools, supported format: GDSII, DXF, OASIS, CIF. If you still missing a function, you are free to write a feature request

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