Extraction of geometry-related interconnect variation based on parasitic capacitance data
2014
A new interconnect parasitic extraction flow considering geometry-related variation has been proposed in this letter. The 42 interconnect capacitance loads were fabricated by 55-nm process technology and measured to characterize geometric variation. According to the new extraction flow, interconnect technology file (ITF) has been optimized and established. As a result, both extracted error by layout parasitic extraction tool and simulated error by field solver have been improved obviously with this optimized ITF. Meanwhile, an on-chip interconnect test technique with nonoverlapping signal generation circuitry based on charge-induced-injection error-free charge-based capacitance measurement has been designed in this letter to simplify the test procedure.
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