关键词: 数字后端设计, Innovus, 局部高密度标准单元, 时序优化

Abstract: Standard cell layout is one of the important aspects of digital IC backend design, and high standard cell density affects the tool routing and timing optimization. Using UMC 28 nm process, two methods based on Innovus are used to solve the problem that the hold violation cannot be fixed automatically by the tool due to local high-density standard cells, and the timing optimization is achieved while the dynamic IR Drop is reduced. The results show that setting setPlaceMode-place_global_max_density value in the PreCTS stage is more effective for subsequent timing optimization, and the dynamic IR Drop is reduced by 8.85%.

Key words: digital backend design, Innovus, local high-density standard cells, timing optimization