JP2017130247A - バイト消去動作を実行することができるメモリアレイ - Google Patents
バイト消去動作を実行することができるメモリアレイ Download PDFInfo
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- JP2017130247A JP2017130247A JP2016099180A JP2016099180A JP2017130247A JP 2017130247 A JP2017130247 A JP 2017130247A JP 2016099180 A JP2016099180 A JP 2016099180A JP 2016099180 A JP2016099180 A JP 2016099180A JP 2017130247 A JP2017130247 A JP 2017130247A
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Abstract
【解決手段】 メモリアレイは複数のメモリページを含み、各メモリページは複数のメモリバイトを含み、各メモリバイトは複数のメモリセルを含み、各メモリセルは、フローティングゲートモジュールと、制御素子と、消去素子とを含む。同じ列のメモリバイトは同じ消去ラインに接続されるとともに、異なる列のメモリバイトは異なる消去ラインに接続される。したがって、メモリアレイはバイト動作をサポートすることができ、一方同じメモリバイトのメモリセルは同じウェルを共有することができる。メモリアレイの回路領域が削減されることができるとともに、メモリアレイの動作が更に柔軟になることができる。
【選択図】 図1
Description
Claims (20)
- 複数のメモリページを備えるメモリアレイであって、
各メモリページが複数のメモリバイトを含み、各メモリバイトが複数のメモリセルを含み、各メモリセルが、
第1の端子、第2の端子及びフローティングゲートを有するフローティングゲートトランジスタ、
ソースラインに接続される第1の端子、前記フローティングゲートトランジスタの前記第1の端子に接続される第2の端子、及びワードラインに接続される制御端子を有するソーストランジスタ、並びに、
前記フローティングゲートトランジスタの前記第2の端子に接続される第1の端子、ビットラインに接続される第2の端子、及び前記ワードラインに接続される制御端子を有するビットトランジスタ、を含むフローティングゲートモジュールと、
制御ラインに接続されるボディ端子、前記ボディ端子に接続される第1の端子、前記ボディ端子に接続される第2の端子、及び前記フローティングゲートに接続される制御端子を有する制御素子と、
ボディ端子、消去ラインに接続される第1の端子、第2の端子、及び前記フローティングゲートに接続される制御端子を有する消去素子とを備え、
同じ列のメモリバイトが同じ消去ラインに接続されるとともに、
異なる列のメモリバイトが異なる消去ラインに接続される、メモリアレイ。 - 同じメモリページのメモリセルが同じ制御ラインに接続されるとともに、
異なるメモリページのメモリセルが異なる制御ラインに接続される、請求項1に記載のメモリアレイ。 - 同じメモリページのメモリセルが同じワードラインに接続されるとともに、
異なるメモリページのメモリセルが異なるワードラインに接続される、請求項1に記載のメモリアレイ。 - 同じ列のメモリセルが同じソースライン及び同じビットラインに接続されるとともに、
異なる列のメモリセルが異なるソースライン及び異なるビットラインに接続される、請求項1に記載のメモリアレイ。 - 前記消去素子の前記ボディ端子がウェルバイアスラインに接続され、
前記消去素子の前記第2の端子が前記消去素子の前記第1の端子に接続されるか又はフローティングであり、
同じメモリページのメモリセルが同じウェルバイアスラインに接続されるとともに、
異なるメモリページのメモリセルが異なるウェルバイアスラインに接続される、請求項1に記載のメモリアレイ。 - 前記メモリセルのプログラム動作の間、
前記制御ラインが実質的に第1の電圧であり、
前記消去ラインが実質的に第2の電圧であり、
前記ワードラインが実質的に第3の電圧であり、
前記ソースラインが実質的に第4の電圧であり、
前記ビットラインが実質的に前記第4の電圧であるとともに、
前記ウェルバイアスラインが実質的に前記第2の電圧であり、
前記第1の電圧が実質的に第2の電圧より大きく、前記第2の電圧が実質的に第3の電圧より大きく、前記第3の電圧が実質的に第4の電圧より大きく、
前記第2の電圧と前記第4の電圧との間の差が実質的に前記第1の電圧と前記第4の電圧との間の差の半分より大きく、そして、
前記第3の電圧と前記第4の電圧との間の差が実質的に前記第1の電圧と前記第4の電圧との間の差の半分より小さい、請求項5に記載のメモリアレイ。 - 前記メモリセルの前記プログラム動作の間、
前記メモリセルと同じメモリページ内の非選択メモリセルに接続される消去ラインが実質的に前記第2の電圧であり、
前記非選択メモリセルに接続されるソースラインが実質的に前記第3の電圧であるとともに、
前記非選択メモリセルに接続されるビットラインが実質的に前記第3の電圧である、請求項6に記載のメモリアレイ。 - 前記メモリセルの前記プログラム動作の間、
非選択ページ内の、しかし前記メモリセルと同じ列における非選択メモリセルに接続される制御ラインが実質的に前記第3の電圧であり、
前記非選択メモリセルに接続されるワードラインが実質的に前記第3の電圧であるとともに、
前記非選択メモリセルに接続されるウェルバイアスラインが実質的に前記第2の電圧である、請求項6に記載のメモリアレイ。 - 前記メモリセルの消去動作の間、
前記制御ラインが実質的に第4の電圧であり、
前記消去ラインが実質的に第5の電圧であり、
前記ウェルバイアスラインが実質的に前記第5の電圧であり、
前記ワードラインが実質的に第3の電圧であり、
前記ソースラインが実質的に前記第3の電圧であるとともに、
前記ビットラインが実質的に前記第3の電圧であり、
前記第5の電圧が実質的に前記第3の電圧より大きく、前記第3の電圧が実質的に前記第4の電圧より大きい、請求項5に記載のメモリアレイ。 - 前記メモリセルの前記消去動作の間、
前記メモリセルと同じメモリページ内の非選択メモリセルに接続される消去ラインが実質的に第6の電圧であり、
前記非選択メモリセルに接続されるソースラインが実質的に前記第3の電圧であるとともに、
前記非選択メモリセルに接続されるビットラインが実質的に前記第3の電圧であり、
前記第5の電圧が実質的に前記第6の電圧より大きく、前記第6の電圧が実質的に前記第4の電圧より大きく、そして、
前記第6の電圧と前記第4の電圧との間の差が実質的に前記第5の電圧と前記第4の電圧との間の差の半分より小さい、請求項9に記載のメモリアレイ。 - 前記メモリセルの前記消去動作の間、
前記メモリセルと異なるメモリページ内の非選択メモリセルに接続されるウェルバイアスラインが実質的に前記第5の電圧であり、
前記非選択メモリセルに接続される制御ラインが実質的に第7の電圧であるとともに、
前記非選択メモリセルに接続されるワードラインが実質的に前記第3の電圧であり、
前記第5の電圧が実質的に前記第7の電圧より大きく、前記第7の電圧が実質的に前記第3の電圧より大きく、そして、
前記第7の電圧と前記第4の電圧との間の差が実質的に前記第5の電圧と前記第4の電圧との間の差の半分より大きい、請求項9に記載のメモリアレイ。 - 前記消去素子の前記ボディ端子が前記消去素子の前記第1の端子に接続されるとともに、
前記消去素子の前記第2の端子が前記消去素子の前記第1の端子に接続される、請求項1に記載のメモリアレイ。 - 前記メモリセルのプログラム動作の間、
前記制御ラインが実質的に第1の電圧であり、
前記消去ラインが実質的に第2の電圧であり、
前記ワードラインが実質的に第3の電圧であり、
前記ソースラインが実質的に第4の電圧であるとともに、
前記ビットラインが実質的に前記第4の電圧であり、
前記第1の電圧が実質的に第2の電圧より大きく、前記第2の電圧が実質的に第3の電圧より大きく、前記第3の電圧が実質的に第4の電圧より大きく、
前記第2の電圧と前記第4の電圧との間の差が実質的に前記第1の電圧と前記第4の電圧との間の差の半分より大きく、そして、
前記第3の電圧と前記第4の電圧との間の差が実質的に前記第1の電圧と前記第4の電圧との間の差の半分より小さい、請求項12に記載のメモリアレイ。 - 前記メモリセルの前記プログラム動作の間、
前記メモリセルと同じメモリページ内の非選択メモリセルに接続される消去ラインが実質的に前記第2の電圧であり、
前記非選択メモリセルに接続されるソースラインが実質的に前記第3の電圧であるとともに、
前記非選択メモリセルに接続されるビットラインが実質的に前記第3の電圧である、請求項13に記載のメモリアレイ。 - 前記メモリセルの前記プログラム動作の間、
非選択メモリページ内の、しかし前記メモリセルと同じ列における非選択メモリセルに接続される制御ラインが実質的に前記第3の電圧であるとともに、
前記非選択メモリセルに接続されるワードラインが実質的に前記第3の電圧である、請求項13に記載のメモリアレイ。 - 前記メモリセルの消去動作の間、
前記消去ラインが実質的に第5の電圧であり、
前記制御ラインが実質的に第4の電圧であり、
前記ワードラインが実質的に第3の電圧であり、
前記ソースラインが実質的に前記第3の電圧であるとともに、
前記ビットラインが実質的に前記第3の電圧であり、
前記第5の電圧が実質的に前記第3の電圧より大きく、前記第3の電圧が実質的に前記第4の電圧より大きい、請求項12に記載のメモリアレイ。 - 前記メモリセルの前記消去動作の間、
前記メモリセルと同じメモリページ内の非選択メモリセルに接続される消去ラインが実質的に第6の電圧であり、
前記非選択メモリセルに接続されるソースラインが実質的に前記第3の電圧であるとともに、
前記非選択メモリセルに接続されるビットラインが実質的に前記第3の電圧であり、
前記第5の電圧が実質的に前記第6の電圧より大きく、前記第6の電圧が実質的に前記第4の電圧より大きく、そして、
前記第6の電圧と前記第4の電圧との間の差が実質的に前記第5の電圧と前記第4の電圧との間の差の半分より小さい、請求項16に記載のメモリアレイ。 - 前記メモリセルの前記消去動作の間、
前記メモリセルと異なるメモリページ内の非選択メモリセルに接続される制御ラインが実質的に第7の電圧であるとともに、
前記非選択メモリセルに接続されるワードラインが実質的に前記第3の電圧であり、
前記第5の電圧が実質的に前記第7の電圧より大きく、前記第7の電圧が実質的に前記第4の電圧より大きく、そして、
前記第7の電圧と前記第4の電圧との間の差が実質的に前記第5の電圧と前記第4の電圧との間の差の半分より大きい、請求項16に記載のメモリアレイ。 - 複数のメモリページを備えるメモリアレイであって、
各メモリページが複数のメモリバイトを含み、各メモリバイトが複数のメモリセルを含み、各メモリセルが、
第1の端子、第2の端子及びフローティングゲートを有するフローティングゲートトランジスタ、
ソースラインに接続される第1の端子、前記フローティングゲートトランジスタの前記第1の端子に接続される第2の端子、及びワードラインに接続される制御端子を有するソーストランジスタ、並びに、
前記フローティングゲートトランジスタの前記第2の端子に接続される第1の端子、ビットラインに接続される第2の端子、及び前記ワードラインに接続される制御端子を有するビットトランジスタ、を含むフローティングゲートモジュールと、
制御ラインに接続されるボディ端子、前記ボディ端子に接続される第1の端子、前記ボディ端子に接続される第2の端子、及び前記フローティングゲートに接続される制御端子を有する制御素子と、
ボディ端子、消去ラインに接続される第1の端子、第2の端子、及び前記フローティングゲートに接続される制御端子を有する消去素子とを備え、
同じ列のメモリバイトが同じ制御ラインに接続されるとともに、
異なる列のメモリバイトが異なる制御ラインに接続される、メモリアレイ。 - 同じメモリページのメモリセルが同じ消去ラインに接続されるとともに、
異なるメモリページのメモリセルが異なる消去ラインに接続される、請求項19に記載のメモリアレイ。
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