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vlsi design / September 21, 2021

Stick Diagrams

Stick diagrams help plan layout quickly Ø  Need not be to scale Ø  Draw with color pencils or dry-erase markers Wiring Tracks       A wiring track is the space required for a wire ·         4 λ width, 4 λ spacing from neighbor = 8 λ pitch       Transistors also consume one wiring track Well spacing Wells must surround transistors by […]

By · September 21, 2021 · 1 min read

Stick diagrams help plan layout quickly

Ø  Need not be to scale

Ø  Draw with color pencils or dry-erase markers

Wiring Tracks

      A wiring track is the space required for a wire

·         4 λ width, 4 λ spacing from neighbor = 8 λ pitch

      Transistors also consume one wiring track

Well spacing

Wells must surround transistors by 6 λ

      Implies 12 λ between opposite transistor flavors

      Leaves room for one wire track

Area Estimation

Ø  Estimate area by counting wiring tracks

Ø  Multiply by 8 to express in λ