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Example Results

A SRAM cells metal1 layer modified to improve yield (this is a very old (1.5um) technology).

Original Cell

Results, graphs and CAA Map for PTR_A

Results Summary

Predictions Software Ltd                http://www.icyield.com/

      WWW PEYE-CAA Script Output for metal1

Root cell "PTR_A"

Cell area                       5.89375e-06 cm^2
Boundary area                   4.68e-06 cm^2

Short faults for layer metal1.

Estimated Faults per "cell"     6.7259219750486e-07
Estimated yield(%) per "cell"   99.9999327408029 %
Equivalent Faults per cm^2      0.143716
Equivalent yield(%) per cm^2    86.61335 %


                Layer Key

Layer active    =>      Green    outline
Layer boundary  =>      Black    outline
Layer contact   => light        Green    solid
Layer metal1    =>      Blue     solid
Layer metal2    =>      Indigo   outline
Layer poly      =>      Red      outline
Layer via1      => light        Blue     solid


Defect density of 1 defect/cm^2, for defect sizes greater than 1.8 um,
with a size distribution of 1/(defect size)^3.

Executed in 0.317 secs

Modified Cell (handcrafted)

Results, graphs and CAA Map for PTR_A_DFM

Results Summary

Predictions Software Ltd                http://www.icyield.com/

      WWW PEYE-CAA Script Output for metal1

Root cell "PTR_A_DFM"

Cell area                       5.89375e-06 cm^2
Boundary area                   4.68e-06 cm^2

Short faults for layer metal1.

Estimated Faults per "cell"     6.11195865365344e-07
Estimated yield(%) per "cell"   99.9999388804321 %
Equivalent Faults per cm^2      0.130597
Equivalent yield(%) per cm^2    87.75710 %


                Layer Key

Layer active    =>      Green    outline
Layer boundary  =>      Black    outline
Layer contact   => light        Green    solid
Layer metal1    =>      Blue     solid
Layer metal2    =>      Indigo   outline
Layer poly      =>      Red      outline
Layer via1      => light        Blue     solid


Defect density of 1 defect/cm^2, for defect sizes greater than 1.8 um,
with a size distribution of 1/(defect size)^3.

Executed in 0.291 secs



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