7-tracks standard cell library

Details 7-tracks standard cell library 7-tracks standard cell library

2005-08-30

2005-08-30

Whitmore, Stacy A. (Department: 2825)

Computer-aided design and analysis of circuits and semiconductor

Nanotechnology related integrated circuit design

C716S030000

Reexamination Certificate

active

06938226

ABSTRACT:
A 7-track standard cell library having a layout architecture that is designed for fabrication technologies having design rules of 0.12 microns or smaller. The cells are laid out using a routing grid having horizontal and vertical grid spacings of 0.4 microns, such that the height of each 7-track standard cell is 2.8 microns (i.e., seven track spacings based on a horizontal grid spacing of 0.4 microns). Power rails are implemented using M1 structures. The seven-track cell height is divided into four tracks on the P-side and three tracks on the N-side. Complex cells include one internal connection line (structure) formed using the third metal layer (M3) that is introduced in a predetermined track (e.g., the second track from the top of the cell) to facilitate the seven-track layout.

REFERENCES:
patent: 5872716 (1999-02-01), Yano et al.
patent: 6467074 (2002-10-01), Katsioulas et al.
patent: 6675361 (2004-01-01), Crafts

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