EPROM字线电荷泵的电压控制振荡器(VCO)导致下电电流不一致

Proceedings of the 1997 6th International Symposium on the Physical and Failure Analysis of Integrated Circuits Pub Date : 1997-07-21 DOI:10.1109/IPFA.1997.638196

K. Aw

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引用次数: 3

摘要

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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Inconsistency in power down current caused by voltage control oscillator (VCO) of EPROM wordline charge pump

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.

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Proceedings of the 1997 6th International Symposium on the Physical and Failure Analysis of Integrated Circuits

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