Timing monitoring paths selection for wide voltage IC

IEICE Electronics Express

Xiaoyan Xiang³  Wentao Dai¹  Youhua Shi²  Peng Cao¹  Weiwei Shan¹ 

[1] National ASIC System and Research Engineering Center, Southeast University;Waseda University;State Key Laboratory of ASIC and System, Fudan University

关键词: timing monitor;    wide voltage range;    path selection;    low power;   

DOI  :  10.1587/elex.13.20160095

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(10)Cited-By(2)Wide voltage range circuit has got widespread attention where in-situ timing monitoring based adaptive voltage scaling (AVS) becomes necessary to reduce the design margin. However, the severe PVT variations across near-threshold to super-threshold cause too many critical paths to be monitored. Here activation oriented monitoring paths selection method is proposed to reduce the monitored paths for wide voltage IC. The minimum delay value of the longest activated path is found by dynamic timing analysis and set as the selection threshold. Those paths longer than this threshold by STA analysis are selected to be monitored. Applied on a 40 nm AVS System-on-Chip, it reduces the monitoring paths to only 22% of all critical paths with remarkable power gains under 0.6 V�?1.1 V.

【 授权许可】

Unknown