Jun'ichi Segawa, Yusuke Shirota, K. Fujisaki, Tetsuro Kimura, Tatsunori Kanai
{"title":"Aggressive use of Deep Sleep mode in low power embedded systems","authors":"Jun'ichi Segawa, Yusuke Shirota, K. Fujisaki, Tetsuro Kimura, Tatsunori Kanai","doi":"10.1109/CoolChips.2014.6842956","DOIUrl":null,"url":null,"abstract":"Since idle-state is the dominant state for embedded systems, disabling unused devices in idle-states can lead to significant power reduction. Among the various sleep modes provided by application processors, Deep Sleep mode offers maximum power savings. Since Deep Sleep mode requires to stop I/O devices and clocks, it is usually used in suspend-state. However, with the emergence of non-volatile or low power compute state retainable devices, we can now explore exploiting Deep Sleep mode in non-suspend states. We propose a new scheme to aggressively use Deep Sleep mode under normal operations. An experimental result of 48-80% power reduction on our prototype board indicates possibilities for near-future mobile platform running solely on photovoltaic-power.","PeriodicalId":366328,"journal":{"name":"2014 IEEE COOL Chips XVII","volume":"129 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2014 IEEE COOL Chips XVII","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CoolChips.2014.6842956","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
Since idle-state is the dominant state for embedded systems, disabling unused devices in idle-states can lead to significant power reduction. Among the various sleep modes provided by application processors, Deep Sleep mode offers maximum power savings. Since Deep Sleep mode requires to stop I/O devices and clocks, it is usually used in suspend-state. However, with the emergence of non-volatile or low power compute state retainable devices, we can now explore exploiting Deep Sleep mode in non-suspend states. We propose a new scheme to aggressively use Deep Sleep mode under normal operations. An experimental result of 48-80% power reduction on our prototype board indicates possibilities for near-future mobile platform running solely on photovoltaic-power.