Title :
Preform: a process independent symbolic layout system
Author :
Dufourd, J.-C. ; Naviner, J.-F. ; Jutand, F.
Author_Institution :
Telecom Paris Univ., France
Abstract :
Preform stick is a symbolic design method for CMOS VLSI cells. It is an alternative to hand-crafted mask design allowing good density and electrical performance while designing process independent cells. Its principle lies between the gate-matrix layout and virtual grid sticks. The authors introduce the notion of a process independent stick syntax and present two compilers that enable the Preform tool to be independent of both process and design strategy. Preform has been used for the design of three chips with up to 300000 transistors.<>
Keywords :
CMOS integrated circuits; VLSI; circuit layout CAD; CMOS VLSI cells; Preform tool; gate-matrix layout; hand-crafted mask design; process independent cells; process independent stick syntax; process independent symbolic layout system; symbolic design method; virtual grid sticks; Assembly; Circuit analysis; Design automation; Design methodology; Geometry; Preforms; Process design; Routing; Telecommunications; Wires;
Conference_Titel :
Computer-Aided Design, 1990. ICCAD-90. Digest of Technical Papers., 1990 IEEE International Conference on
Conference_Location :
Santa Clara, CA, USA
Print_ISBN :
0-8186-2055-2
DOI :
10.1109/ICCAD.1990.129893
