Advanced On-chip-variation Timing Analysis for …

Advanced On-chip-variation Timing Analysis for nanometer Designs Incentia design Systems, Inc. 1. Introduction Manufacturing a chip is a process that involves many variables. Some of these variables are fairly consistent for the whole manufacturing process. Some variables vary from lot to lot, but are consistent across a single lot of wafers. Still other variables vary from wafer to wafer but are consistent across a chip [1]. Of course, there are also variables often observed in a single chip. This so called On-chip-variation (OCV) may come from mask alignment, etching process, and optical proximity correction. Therefore, two instances of the same cell on the same chip may have different Timing characteristics. Consider a chain of buffers that are connected in Figure 1. The buffers in the middle will not have too much variation because they connect to each other with the same cell type. The buffers at two ends that connect to other cells may have variations due to the etching process.

Advanced On-chip-variation Timing Analysis for Nanometer Designs Incentia Design Systems, Inc. 1. Introduction Manufacturing a chip is …

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  Analysis, Design, Variations, Timing, Variation timing analysis for, Variation timing analysis for nanometer designs, Nanometer

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