{"title":"Inconsistency in power down current caused by voltage control oscillator (VCO) of EPROM wordline charge pump","authors":"K. Aw","doi":"10.1109/IPFA.1997.638196","DOIUrl":null,"url":null,"abstract":"Inconsistency in power down current (IPD) measurement was experienced on the device, with Word Line Charge Pump, when it is operating at Vcc higher than 3 V. When the device enters power down, the current was measured in a very random manner, sometimes down to sub-micro-ampere or a few ten micro-ampere range. This problem totally goes away when the device is operating at 3 V. The root cause of this problem is due to the VCO (Voltage Control Oscillator) of the Word Line Charge Pump.","PeriodicalId":159177,"journal":{"name":"Proceedings of the 1997 6th International Symposium on the Physical and Failure Analysis of Integrated Circuits","volume":"13 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1997-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 1997 6th International Symposium on the Physical and Failure Analysis of Integrated Circuits","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IPFA.1997.638196","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
Inconsistency in power down current (IPD) measurement was experienced on the device, with Word Line Charge Pump, when it is operating at Vcc higher than 3 V. When the device enters power down, the current was measured in a very random manner, sometimes down to sub-micro-ampere or a few ten micro-ampere range. This problem totally goes away when the device is operating at 3 V. The root cause of this problem is due to the VCO (Voltage Control Oscillator) of the Word Line Charge Pump.
在使用Word Line Charge Pump的设备上，当其工作在高于3v的Vcc时，出现了断电电流(IPD)测量不一致的情况。当器件进入断电状态时，电流以一种非常随机的方式测量，有时下降到亚微安或几十微安的范围。当设备在3v电压下工作时，这个问题就完全消失了。这个问题的根本原因是由于VCO(电压控制振荡器)的字线电荷泵。
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