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標題: | 改善控制器IC的VDT電路及相容性問題 Improve the VDT circuit and compatibility issue of controller IC |
作者: | Kuei-Hung Fang 方貴弘 |
指導教授: | 呂學士 |
關鍵字: | 控制器,相容性, Flash memory,Controller,VDT,compatibility, |
出版年 : | 2005 |
學位: | 碩士 |
摘要: | 近年來由於小型記憶卡( security digital memory card and multi-media card ) 的需求,可說是每年都在倍數俱增, 一度造成flash memory缺貨日盛。 除既有的世界大廠Samsung、Toshiba投入外,Micro、Hynix、Infineon 陸續在2004年進入量產階段,並進一步推出更高容量的flash memory來因應市場需求,促使搭配小型記憶卡的另一重要元件---控制器IC---也相對日益重要、水漲船高,從而可知控制器IC的研發已刻不容緩。因此,相對於周邊的消費性產品的相容性,是另一個重要的課題。 本論文研究主要在既有不完善的控制器IC下,借著一連串實際理論及結果來改善控制器IC的VDT(Voltage Detected Test)電路,並加強產品本身相容性以便支援更多消費性產品來符合消費市場的需求。此原產品控制器IC存在兩個主要問題急待解決:其一是VDT電路的失效,另外是Canon數位相機(DSC)在開機時會有相容性問題。在本論文將提及有關的驗証流程、
實驗和結果來說明問題所在。最後,我們確認失敗的原因並且修改Layout、net-list和光罩來根本解決問題,以便順利量產。此外,控制器IC使用的製程是 UMC 0.18um 1P4M GENERICII 技術。 The production of small memory cards (SD card and MMC card) has significantly increased in recent years, explaining the short supply of flash memory. Large electronics companies, such as Samsung, Toshiba, Micro, Hynix and Infinine produced large quantities of flash memory in 2004 successively. These companies also plan to introduce high-capacity Flash memory to fulfill market demand. Another significant component of small memory cards is the controller IC, which is also increasing the subject of research and development. Therefore, the compatibility among consumer peripheral products is another important subject. This investigation attempts to improve the VDT (voltage detect test) circuit of controller IC and enhance its compatibility to support a wide variety of consumer products in accordance with consumer market demand. The current immature controller IC has two major limitations to be solved. One difficulty is that the VDT circuits do not work. The output-voltage remains the same even when the trimming fuse is destroyed. The other problem is the power-on problem for CANON DSC compatibility issue, caused by power-on-strap failure. The verified procedure, experiments and results are presented in this investigation. Finally, this investigation discovers the root cause of VDT poly fuse resistor and one address pin floating problems, and modifies the layout, net-list and masks to fix the bugs and enable mass production smoothly. The controller IC is fabricated using UMC 0.18um 1P4M GENERICII logic technology. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/24151 |
全文授權: | 未授權 |
顯示於系所單位: | 電子工程學研究所 |
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檔案 | 大小 | 格式 | |
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ntu-94-1.pdf 目前未授權公開取用 | 1.19 MB | Adobe PDF |
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