JP7150787B2 - 抵抗変化型クロスバーアレイ装置 - Google Patents
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Description
列選択信号YS[n]がHレベルのとき、CMOSパストランジスタがオンしパルス駆動信号YD[n]が列ラインY[n]に印加され、NMOSトランジスタがオフする。列選択信号YS[n]がLレベルのとき、CMOSパストランジスタがオフし、NMOSトランジスタがオンし、列ラインY[n]がGNDレベルに接続される。
XY(座標位置):P(パルス幅)=(2,0):3、(1,0):2、(0,0):1、(2,1):1、(1,1):3、(1,2):1
例えば、X[2]とY[0]のメモリ素子には、パルス幅P3の駆動信号XD[2]が印加され、X[1]とY[0]のメモリ素子には、パルス幅P2の駆動信号XD[1]が印加され、X[0]とY[0]のメモリ素子には、パルス幅P1の駆動信号XD[0]が印加される。パルス幅P3、P2、P1は、制御部140からの制御信号S1によって規定される。
パルス駆動信号XD[0]が一斉に印加され、かつ列ラインY[0]にセット書込み電圧Vset_Y(GND)のパルス駆動信号YD[0]が印加される。行ラインに印加されるパルス駆動信号XDの各パルス幅P1、P2、P3の立ち上がりエッジは、列ラインに印加されるパルス駆動信号YDの電圧Vset_Yの立下りエッジに整合される。また、パルス駆動信号YDのセット書込み電圧Vset_Yのパルス幅は、行ラインに印加されるパルス幅の最大値に設定されるか、またはアルゴリズムの最大値に固定される。後者の場合、書込み時間は一定となり、ホストコントローラにとって制御し易い利点がある。ここでは、パルス駆動信号YDのパルス幅をP3に設定している。
110:クロスバーアレイ
120:行選択/駆動回路
122:行選択回路
124:パルス生成回路
130:列選択/駆動回路
132:列選択回路
134:パルス生成回路
140:制御部
150:入出力部
Claims (11)
- バイポーラタイプの抵抗変化型メモリ素子を用いたクロスバーアレイへの書込み方法であって、
クロスバーアレイの選択された複数の行ラインにパルス幅が異なるように制御された第1の書込み電圧を、それぞれ印加し、選択された列ラインにパルス幅が制御された第2の書込み電圧を印加することで、選択された抵抗変化型メモリ素子の低抵抗状態への書込みを行い、
第2の書込み電圧のパルス幅は、第1の書込み電圧のパルス幅の最大パルス幅に設定される、書込み方法。 - 複数の行ラインに第1の書込み電圧を印加することで複数の抵抗変化型メモリ素子の書込みを同時に行う、請求項1に記載の書込み方法。
- 第2の書込み電圧は、列ラインに共通のGND電極である、請求項1または2に記載の書込み方法。
- 非選択の行ラインおよび非選択の列ラインに書込み禁止電圧を印加する、請求項1または2に記載の書込み方法。
- 第1の書込み電圧のパルスの立ち上がりエッジは、第2の書込み電圧のパルスの立下りエッジに整合する、請求項1ないし4いずれか1つに記載の書込み方法。
- 複数の行ラインと複数の列ラインとのそれぞれの交差部に抵抗変化型メモリ素子が接続されたクロスバーアレイと、
クロスバーアレイの行ラインを選択する行選択手段と、
クロスバーアレイの列ラインを選択する列選択手段と、
前記行選択手段により選択された行ラインおよび前記列選択手段により選択された列ラインに接続された抵抗変化型メモリ素子に書込みを行う書込み手段とを有し、
前記書込み手段は、パルス幅が異なるように制御された第1の書込み電圧を複数の行ラインに、それぞれ印加し、パルス幅が制御された第2の書込み電圧を列ラインに印加し、選択された抵抗変化型メモリ素子の低抵抗状態への書込みを行い、
前記書込み手段は、第2の書込み電圧のパルス幅を、第1の書込み電圧のパルス幅の最大パルス幅に設定する、アレイ装置。 - 前記書込み手段は、複数の行ラインに第1の書込み電圧を印加することで、複数の抵抗変化型メモリ素子の書込みを同時に行う、請求項6に記載のアレイ装置。
- 前記書込み手段は、非選択の行ラインおよび非選択の列ラインに書込み禁止電圧を印加する、請求項6または7に記載のアレイ装置。
- 前記書込み手段は、第1の書込み電圧のパルスの立ち上がりエッジを、第2の書込み電圧のパルスの立下りエッジに整合させる、請求項6ないし8いずれか1つに記載のアレイ装置。
- 前記抵抗変化型メモリ素子の各々は、順方向バイアスおよび逆方向バイアスにおいてしきい値を超える電圧が印加されたときに電流を流すことができるセレクタを集積する、請求項6ないし9いずれか1つに記載のアレイ装置。
- クロスバーアレイは、シナプスアレイに適用される、請求項6ないし10いずれか1つに記載のアレイ装置。
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TW110122102A TWI764762B (zh) | 2020-07-31 | 2021-06-17 | 陣列裝置及其寫入方法 |
US17/367,651 US11594279B2 (en) | 2020-07-31 | 2021-07-06 | Array device and writing method thereof |
CN202110770511.1A CN114067883A (zh) | 2020-07-31 | 2021-07-07 | 阵列装置及其写入方法 |
KR1020210096899A KR102560900B1 (ko) | 2020-07-31 | 2021-07-23 | 어레이 장치 및 그 기입 방법 |
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