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Pass Transistor Logic Cell Library Group Members: Keith Benson Kofi Inkabi Ashley Nozine
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Project Summary Design basic cells that can incorporated into Cadence cell library. Incorporate cells into Cadence’s cell library. Compare technology mapped layout versus CMOS only Layout –Power –Area –Delay
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Standard Cell Dimensions
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Cell Characteristics 0.25um technology Area *Height * Width Height is constant at 54 = 6.75um Delay *50% Input 50% Output Dynamic Power dissipation *P Dyn = V DD * I ave Iave = (I H L + I L H ) / 2
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Cell Y2 schematic
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Layout without Buffer
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Simulation of Layout/no buffer
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Cell Y2 no buffer: results
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Cell Y2 with buffer schematic
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Layout with small buffer
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Simulation of Layout/Small Buf.
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Cell Y2 small buffer: results
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Cell Y2 with buffer*x schematic
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Layout with large buffer
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Simulation of Layout/Large Buf.
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Cell Y2 large buffer: results
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Original Schedule A: Project Proposal B: Learn Cadence/Know Cadence Library Specs. C: Build Cell layouts D: Measure Cells for Power, Area, and Power E: Receive Netlist and automatically generate layout of Technology Mapped cells F: Compare Layout of PTL and CMOS cells against CMOS only cells
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Revised Schedule A: Locate tool to automatically generate layout from Netlist B: Receive Netlist and automatically generate layout of Technology Mapped cells C: Characterize Technology Mapped layout from netlist D: Characterize CMOS layout from netlist E: Compare Technology Mapped layout vs. CMOS only layout F: Final Report
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