An automatic module generation system is presented which is based on the metal-metal matrix layout style for double-metal CMOS technology. The circuit is described in SPICE format or by incidence matrices. The transistor circuit is partitioned into medium-sized cell containing up to 200 transistors and converted into physical mask layers using a cell generator. This generator has been designed to control the height of the cells and hence also the width, so that the cells can be used in a standard cell layout environment. The height of the cell is controlled by removing vertical constraints imposed on horizontal nets by adding additional columns to the cell. >
['Perry Gee', 'Ibrahim N. Hajj', 'Sung-Mo Kang']
A custom cell generation system for double-metal CMOS technology