End Cap or Boundary Cell | Use of endCap Cells | Placement of endCap Cell | Layout of endCap Cell

[@進宇-k2z]

Hi Sir, this is a great video. Thank you for your hard work! Can you explain why endcap prevents source drain sort at the boundary of design as it has poly extension? What is source drain sort? Why the poly extension will cause it? Why it will harm our design?

[@MrHarish409]

Excellent information

[@TeamVLSI]

Glad you liked it

[@ArunKumar-wu4px]

Nice video...purpose of horizontal pink layer... especially with layout is superb...

[@TeamVLSI]

Thanks a lot 😊 @Arun

[@vainavitutorial4896]

Sir what is flat cells in vlsi?

[@lakshthakkar3085]

Are there any open source tools to learn physical design??

[@TeamVLSI]

Hi Laksh, I have no much idea about this, But I have heard about this from Kunal Ghosh, you may check the following link from VSD. www.vlsisystemdesign.com/vsd-a-complete-guide-to-install-open-source-eda-tools/

[@lakshthakkar3085]

@@TeamVLSI thank you sir!

[@pavankumarVilasagar]

Hi, What I observed is that Nwell is extended on both sides of PR boundary for standard cells, whereas, Nwell is extended on one side of PR boundary and other side it terminates exactly at PR boundary for Endcap cell. Left and Right of a row, Endcap cells are place for Nwell discontinuity and Top and bottom, Edge fillers are placed for poly discontinuity. Correct?

[@TeamVLSI]

Yes, your theory seems correct. But in actual layout I have found nwell in such a way. Anyway let me verify again and I will come back to you.

[@TeamVLSI]

Hi @Pavan Can you ping me on [e-mail]? I need to discuss something personally.

[@lakshthakkar3085]

@@TeamVLSI are there any open source tools to learn physical design

[@praneethd.shetty3197]

Can u explain how endcap will discontinue nwell and fillers will discontinue ploy. @pavan kumar Vilasagar...@Team VLSI

[@siddharthdhulipala24]

@@lakshthakkar3085 search qflow, using linux u can download pnr tools

[@DHANANJAYKUMAR-tu4mo]

How can I import the Design without technology file? Please suggest if there is any way..

[@TeamVLSI]

Answer is no. You can only visualize the gds/oasis.

[@DHANANJAYKUMAR-tu4mo]

Very helpful

[@TeamVLSI]

Thanks Dhananjay, Glad it helped.

[@nikitak3605]

please make videos on icc2 tool

[@TeamVLSI]

Sure Nikita, We will try.

[@snkhy5631]

Thank you sir.

[@TeamVLSI]

Most welcome

[@srinidhiala3672]

Thank you for the Video.. I have one doubt here, we use different kinds of encap cells. Based on what creteria these cells will be designed this many types ? Is that based on position of of dummy poly?

[@TeamVLSI]

Yes, Srinidhi. You can can check the layout.

[@prasadgadipalli7077]

Hi sir ,Video was nice . But I have doubts You are saying at the end of rows there will be a damage of gate.So is it related to Well proximity effect? Can we use filler instead of endcap cells?If Yes why if no why I am unable to understand the sentence " the nwells of end cap cells are terminated within the cell" and How it is ensuring ther is no gap between well and implant layer? and why endcap prevents source drain sort at the boundary of design as it has poly extension? how?

[@Santoshkumar-lw1gf]

hi sir nice video.. can u include source of all the material you refferred. thanks for video sir ..__/\__

[@TeamVLSI]

Sorry Santosh , I generally don't keep record or save the content from where I read. It tools long time to research the facts from various sources and 50-60% content are from my own experience.

[@Santoshkumar-lw1gf]

@@TeamVLSI ok sir ...thanks for reply... i want to study the standards cells and other devices with respect to internal layers like poly, OD ,,Cox..N/Pwells etc can u refer standard books or any other source for them if videos are possible then better from understanding perspective sir. thanks in advance sir.