JP7175330B2 - 不揮発性メモリデバイス及び不揮発性メモリ機構を有するシステム並びにそれらを動作するための方法 - Google Patents
不揮発性メモリデバイス及び不揮発性メモリ機構を有するシステム並びにそれらを動作するための方法 Download PDFInfo
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Description
この出願は、“NON-VOLATILE MEMORY DEVICES AND SYSTEMS WITH READ-ONLY MEMORY FEATURES AND METHODS FOR OPERATING THE SAME”という名称のTimothy B. Cowles、Jonathan S. Parry、George B. Raad、及びJames S. Rehmeyerによる継続出願された米国特許出願に関連する主題を含む。関連出願は、マイクロン テクノロジー,インク.に割り当てられ、整理番号010829-9321.US00により識別される。その主題は、参照により本明細書にこれより組み込まれる。
本開示は、一般的に、半導体メモリデバイスに関し、より具体的には、不揮発性メモリデバイス及び不揮発性メモリ機構を有するシステム並びにそれらを動作するための方法に関する。
Claims (15)
- メモリデバイスであって、
不揮発性メモリアレイと、
前記不揮発性メモリアレイの1つ以上のアドレスを前記メモリデバイスのライトワンスリードメニー(WORM)メモリ内に蓄積することと、
前記メモリデバイスの電力状態の変化を検出することと、
前記電力状態の変化を検出することに応答して前記1つ以上のアドレスにおけるデータを疑似ランダムパターンで上書きすることにより前記1つ以上のアドレスにおける前記データを劣化させることと
をするように構成された回路と
を含む、メモリデバイス。 - 前記電力状態の変化は、電力オンイベント、電力オフイベント、又は電力喪失イベントである、請求項1に記載のメモリデバイス。
- 前記ライトワンスリードメニー(WORM)メモリは、ヒューズ、アンチヒューズ、又はそれらの組み合わせのアレイを含む、請求項1に記載のメモリデバイス。
- エネルギー蓄積メカニズムを更に含む、請求項1に記載のメモリデバイス。
- 前記エネルギー蓄積メカニズムは、コンデンサ、バッテリ、燃料電池、又はそれらの組み合わせを含む、請求項4に記載のメモリデバイス。
- 前記エネルギー蓄積メカニズムは、前記1つ以上のアドレスにおけるデータを劣化させる継続時間の間、電力を提供するのに十分なエネルギー蓄積容量を有する、請求項4に記載のメモリデバイス。
- 前記不揮発性メモリアレイは、NANDフラッシュ、NORフラッシュ、MRAM、FeRAM、PCM、又はそれらの組み合わせを含む、請求項1に記載のメモリデバイス。
- 前記不揮発性メモリアレイ及び前記回路を単一の半導体ダイが含む、請求項1に記載のメモリデバイス。
- 前記回路をメモリコントローラダイが含み、前記不揮発性メモリアレイをメモリダイが含む、請求項1に記載のメモリデバイス。
- 前記回路は、前記1つ以上のアドレスにおけるデータを劣化させることによって、前記1つ以上のアドレスにおける前記データを消去するように構成される、請求項1に記載のメモリデバイス。
- 不揮発性メモリアレイを含むメモリデバイスを動作する方法であって、
前記不揮発性メモリアレイの1つ以上のアドレスを前記メモリデバイスのライトワンスリードメニー(WORM)メモリ内に蓄積することと、
前記メモリデバイスの電力状態の変化を検出することと、
前記検出に応答して、前記1つ以上のアドレスにおけるデータを疑似ランダムパターンで上書きすることにより前記不揮発性メモリの前記1つ以上のアドレスにおける前記データを劣化させることと
を含む、方法。 - 前記電力状態の変化は、電力オンイベント、電力オフイベント、又は電力喪失イベントである、請求項11に記載の方法。
- 前記メモリデバイスにおいて受信されたコマンドに応答して、前記ライトワンスリードメニー(WORM)メモリに前記1つ以上のアドレスを書き込むこと
を更に含む、請求項11に記載の方法。 - 前記ライトワンスリードメニー(WORM)メモリは、ヒューズ、アンチヒューズ、又はそれらの組み合わせのアレイを含む、請求項11に記載の方法。
- 前記不揮発性メモリアレイは、NANDフラッシュ、NORフラッシュ、MRAM、FeRAM、PCM、又はそれらの組み合わせを含む、請求項11に記載の方法。
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CN112020745A (zh) | 2020-12-01 |
KR20200133278A (ko) | 2020-11-26 |
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