研究生: |
林詩芸 Shih-Yun Lin |
---|---|
論文名稱: |
應用於DINOR快閃式記憶體高速編碼之研究 High Speed Programming Techniques in DINOR Flash Memory |
指導教授: |
徐清祥 博士
Dr. Ching-Hsiang Hsu 金雅琴 博士 Dr. Ya-Chin King |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
電機資訊學院 - 電子工程研究所 Institute of Electronics Engineering |
論文出版年: | 2000 |
畢業學年度: | 88 |
語文別: | 英文 |
論文頁數: | 99 |
中文關鍵詞: | 電性可擦拭可寫入之唯讀記憶體 、快閃式記憶體 、分裂式NOR型 、多重頁平行寫入 、位元線 、字元線 |
外文關鍵詞: | EEPROM, Flash, DINOR, Multiple Page Parallel Programming, Bitline, Wordline |
相關次數: | 點閱:1 下載:0 |
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在本篇論文中,我們將以動態位元線暫存資料(Dynamic Bitline Latch, DBL)的觀念為基礎,提出三種應用於分裂式NOR型(DIvide NOR, DINOR)快閃式記憶體陣列,多重頁平行(Multiple Page Parallel, MPP)寫入的操作方法,分別為(1)簡單式動態位元線暫存資料(Simple DBL)、(2)無重新寫入之動態位元線暫存資料(DBL without Refresh)及(3)重新寫入之動態位元線暫存資料(DBL with Refresh),並對所提出的三種操作模式做比較。整體而言,在此類型的操作方法中,由於輸入的資料均暫時被儲存於次位元線(Sub-Bitline)的電容中,位於同一條主位元線(Main-Wordline)上所有被選到的記憶體均可在同一時間完成寫入的動作,而在有寫入的資料被限制住的情況之下,臨界電壓的變化也會因此而變小,因此該方法具有寫入速度高及臨界電壓變化小的優點。在另一方面,我們可以藉由在控制閘極加偵測用的脈衝,使得記憶體在不同臨界電壓值導通,藉以控制收斂的臨界電壓值。由我們的實驗結果可得知,本論文中所提出的三種操作模式均有良好的操作特性及可靠度。除此之外,在本論文中還將對操作波形的設計做個別的討論,並提出建議的操作條件。為了得到較好的操作特性,高閘極偶合比例(Gate Coupling Ratio)及高位元線電容比例(Bitline Capacitor Ratio) 是必須的,對於32K大小的位元數而言,所需的操作時間小於0.18ms。總而言之,多重頁平行寫入的操作方法適合高速、小臨界電壓變化及高可靠度的應用。
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