NDLI: New spare cell design for IR drop minimization in Engineering Change Order

Content Provider	IEEE Xplore Digital Library
Author	Hsien-Te Chen Chieh-Chun Chang TingTing Hwang
Copyright Year	2009
Description	Author affiliation: Department of Computer Science, National Tsing Hua University, HsinChu, Taiwan 300 (Hsien-Te Chen; Chieh-Chun Chang; TingTing Hwang)
Abstract	Unused spare cells occur inevitably in traditional ECO design flow. It results in inefficient area usage, more leakage, and more IR drop impacts. To tackle these problems, a reconfigurable cell is proposed which serves the dual purposes of decoupling capacitance and spare cell in this paper. Before Engineering Change Order (ECO) is applied, these cells are pre-placed as decoupling capacitors. When ECO is applied, these cells are configured as functional cells. To demonstrate the efficiency of our configurable cell, we propose an algorithm for timing closure and IR drop minimization. Compared with traditional ECO flow, our method shows 16% reduction in maximum IR drop and 56% reduction in leakage before applying ECO, and 8% reduction in maximum IR drop after applying ECO, with 10% area of spare cells. In addition, we show that there are less unsolved ECO timing paths left after applying our ECO timing optimization algorithm due to free selection of ECO gate type.
Starting Page	402
Ending Page	407
File Size	432995
Page Count	6
File Format	PDF
ISBN	9781605584973
ISSN	0738100X
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-07-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Association for Computing Machinery, Inc. (ACM)
Subject Keyword	Design engineering Timing Computer science Minimization methods Algorithm design and analysis Capacitors Voltage Permission Capacitance Hardware ECO IR Drop Decoupling Capacitor Spare Cell
Content Type	Text
Resource Type	Article

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