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This paper analyzes the impact of Double Patterning Lithography (DPL) on 6T SRAM variability. A test chip is implemented in a 45nm CMOS process that uses DPL. Measurements from 75 dies demonstrate a significant impact of DPL on SRAM failures. Extensive analysis demonstrates that DPL induced mismatch considerably increases functional failures in SRAM cells, and degrades yield. We also propose a DPL-aware...
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