如题,special cell的解释如下:PULL0/PULL1
the two PULL0 and PULL1 cells provide ESD protection of signal inputs from power and ground rails.
these cells provide diffusion-driven inputs for signal pins. If these cells are not used and Via(s) are dropped on the power rails,
DRC error or shorts may occur. Any input pin that will bepreset to 0/1 need connect PULL0/PULL1 cell rather than VSS/VDD.
请问下各位大侠这种special cell应该如何使用?