Observation of one-fifth-of-a-clock wake-up time of power-gated circuit

被引:10
作者
Miyazaki, T [1 ]
Canh, TQ [1 ]
Kawaguchi, H [1 ]
Sakurai, T [1 ]
机构
[1] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan
来源
PROCEEDINGS OF THE IEEE 2004 CUSTOM INTEGRATED CIRCUITS CONFERENCE | 2004年
关键词
D O I
10.1109/CICC.2004.1358743
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
The wake-up time of Zigzag Super Cut-off CMOS (ZSCCMOS) is measured using a functional block for the first time. The measurement method is established and the measured wake-up time is 16% of the cycle time for a 16-bit Brent-Kung adder. The wake-up time corresponds to three 2-input NAND delay. Delay overhead and leakage current reduction of ring oscillators are also measured for the first time. Leakage reduction by a factor of 100 to 1000 is possible for dormant circuit blocks. Thus ZSCCMOS is shown to be effective as a clock-gating substitute.
引用
收藏
页码:87 / 90
页数:4
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