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Give comparison between full custom and semi-custom design

Subject: CMOS VLSI Design

Topic: VLSI Clocking and System Design

Difficulty: High

cvd • 13k  views
0  upvotes
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FULL CUSTOM DESIGN SEMI CUSTOM DESIGN
All mask layers are customised in full custom design It uses pre-designed logic cell(and gates, OR gate, multiplexers) known as standard cells.
In full custom design, all logic cells, circuits or layouts are designed specifically. Design doesn't use pretested or pre-characterized cells. Designer used pre-tested or pre-characterized cell.
This approach is considered only when there is no suitable existing Widely used
Offers high performance lower cost as compared to semi. More cost. Low performance.
Design time and complexity is more. Design time and complexity is less
Eg: Microprocessor Eg. Digital logics
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