WRITE ERASE DEGRADATION IN-SOURCE SIDE INJECTION FLASH EEPROMS - CHARACTERIZATION TECHNIQUES AND WEAROUT MECHANISMS

被引:24
作者
WELLEKENS, D [1 ]
VANHOUDT, J [1 ]
FARAONE, L [1 ]
GROESENEKEN, G [1 ]
MAES, HE [1 ]
机构
[1] UNIV WESTERN AUSTRALIA,NEDLANDS,WA 6009,AUSTRALIA
关键词
D O I
10.1109/16.469408
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, an in-depth analysis is presented of the write/erase degradation in Source Side Injection Flash EEPROM cells, using the HIMOS cell as a typical example. The different mechanisms governing the degradation are studied and quantified by combining UV erasure and I-V measurements with a charge pumping analysis. Both procedures are shown to disclose two effects contributing to the change of the threshold voltage window: a change in the amount of charge on the floating gate due to a decrease in the injection current, accompanied by the series effect of oxide and interface charges locally trapped above the channel. By correlating the results from charge pumping and I-V measurements, an estimate is made of the spatial extent of the damaged region.
引用
收藏
页码:1992 / 1998
页数:7
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