LEF file | Technology file | Description of various files used in VLSI Design | session -2

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Team VLSI
Published at : 08 Dec 2020
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In this video tutorial .lef file and .tf file have been explained in details. .lef file is also called Library Exchange Format file, has basically two parts technology lef and cell lef file. Technology lef contains information about the metal layers and vias and design rules whereas cell lef file contains an abstract view of the layout of standard cells.

.tf file is called Technology file. .tf file basically contain the information of technology like metal layer, via and design rule information.


Both files have been explained here with example in details. The flow of this session is as flow:
0:00 Introduction
1:55 LEF file
2:10 Parts of LEF file
2:24 Technology LEF file
7:50 Cell LEF file
8:09 Cell Name
8:44 Class
9:04 Size
9:39 Symmetry
10:19 Site
10:39 Details of each pin
12:45 Abstract description
16:15 Use of LEF file
17:55 Technology file or .tf file

We have discussed what these files contain and where these files are being used in VLSI design with examples.

In this series of Video, we will discuss all the files which are being used in the VLSI Design. We will discuss each file in depth about the content of file and use of all of them. A suitable example will be used to explain the files in the details.

This topic is very important for those who are preparing for the interview and want to join the VLSI Industry, especially in Physical design. Or those who want to understand Physical design flow in the details.

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