{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# hw4 - c Calculate t pHL and t pLH for this gate assuming...

This preview shows page 1. Sign up to view the full content.

NC State University ECE 546 Fall 2011 ECE Department VLSI Systems Design W. Rhett Davis Homework #4 Tutorials Work through Layout Tutorial #2 – LVS and Parasitic Extraction using Calibre (found on NCSU Cadence Wiki Tutorial Page). Note that this tutorial has not yet been updated to the latest design rules, so your layout should be more dense than the one shown. Problems 1. Circuit from Logic Function, Sizing, and Capacitance a. For the logic function DE C B A F , Sketch the complete complementary CMOS circuit. Then size it for a 10k maximum resistance to VDD or GND (Assume a 90/50 NMOS has 10k resistance and that of the PMOS is 2X higher). Assume that you have complemented signals as inputs, if needed. b. Consider the gate given below. Without calculating t pHL and t pLH for this gate, predict the input transitions that are likely to result in the largest values for each delay.
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: c. Calculate t pHL and t pLH for this gate, assuming that C L =2 fF. Follow the method in example 6.4 and table 6-3 in your text, but assume that C GD , C GS , C DB , and C SB are each 1 aF per nm of gate width (for simplicity). Assume the following input transitions: t pHL : ܣܤ ഥ ܥ ഥ ܦܧ ഥ → ܣܤ ഥ ܥܦܧ ഥ t pLH : ܣܤܥ ̅ ܦܧ → ܣܤܥ ̅ ܦܧ ത 2. Euler Paths and Stick Diagram for Standard Cells For the logic function in problem 2 above, a. Draw the logic diagram b. Determine the consistent Euler paths for the PUN and PDN c. Sketch the stick diagram for the circuit 3. Layout Tutorial #2 Include your final extracted SPICE files ( NAND2.pex.netlist , NAND2.pex.netlist.pex , and NAND2.pex.netlist.NAND2.pxi ) and LVS report ( NAND2.lvs.report ) in your solution document....
View Full Document

{[ snackBarMessage ]}

### What students are saying

• 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.

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

• 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.

Dana University of Pennsylvania ‘17, Course Hero Intern

• 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.

Jill Tulane University ‘16, Course Hero Intern