lec4 - ECE 3060 VLSI and Advanced Digital Design Lecture 4...

Info icon This preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
ECE 3060 VLSI and Advanced Digital Design Lecture 4 Layout Design & Tools
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
ECE 3060 Lecture 3–7 CMOS Layers “Standard” n -Well Process Active (Diffusion) Polysilicon Metal 1, Metal 2, Metal3 Poly Cut (connects metal 1 to polysilicon) Active Cut (connects metal 1 to active) Via (connects metal 2 to metal 1) Overglass Cut (facilitates off-chip connections) n Well n Select (used with active to create n -type diffusion) p Select (used with active to create p -type diffusion) p -well, twin tub, etc. use slightly different layers
Image of page 2
ECE 3060 Lecture 3–8 Well, Active, and Select Layout p-select n-select Active Active n- field oxide p+ n+ p- (substrate) Layout Cross section
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
ECE 3060 Lecture 3–9 Transistor Layout p-select n-select Active Active n- field oxide p+ n+ p- (substrate) Layout Cross section p-fet n-fet thin oxide
Image of page 4
ECE 3060 Lecture 3–10 Wiring and Contact Layout
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
ECE 3060 Lecture 3–12 Substrate and Well Contacts Properties Set Well and Substrate Voltages to Vdd and Gnd Prevent Forward Biasing and Latch-Up Must Be at Least One per Well Should Be Placed Regularly
Image of page 6
ECE 3060 Lecture 3–13 Design Rules Minimum Separation [A] Intralayer (all layers) Interlayer (active to poly/well/select) From Transistor Minimum Width (all layers) [B] Minimum Overlap [C] Past Transistor (poly, active) Around Contact Cut (all contacted layers) Around Active (well, select) Exact Size (contact cuts) [D]
Image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Lambda Rules for TSMC .18u
Image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern