Design for Variability in CMOS Logic Circuits: Uncommitted Motif Arrays (UMAs)

Caldwell, S.H.P. and Cumming, D.R.S. (2009) Design for Variability in CMOS Logic Circuits: Uncommitted Motif Arrays (UMAs). In: ISCAS 2009. IEEE International Symposium on Circuits and Systems, Taipei, Taiwan, May 24-27, 2009, pp. 1807-1810. (doi: 10.1109/ISCAS.2009.5118128)

Abstract

Systematic and statistical variability in digital design is becoming increasingly important, and this will be even more pronounced in sub-45 nm technologies. We propose the use of uncommitted arrays of digital sub-blocks, motifs, as the basic building block for CMOS logic. These uncommitted motif arrays maximize functional flexibility, minimize routing complexity, and increase tolerance to systematic variability. The analytical selection of motifs is presented along with a design of a proposed array. We show prototypical design based on the proposed methodology to illustrate the improved regularity of designs, and the resulting routing efficiency compared to traditional uncommitted logic arrays

• Item Type: Conference Proceedings
• Additional Information: Print isbn: 978142443828
• Keywords: Arrays, CMOS, design, efficiency, logic, statistical variability, technology, variability
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Cumming, Professor David and Caldwell, Mrs Sonia
• Authors: Caldwell, S.H.P., and Cumming, D.R.S.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Iscas: 2009 Ieee International Symposium on Circuits and Systems, Vols 1-5