JP2016109452A - 試験回路および試験回路の制御方法 - Google Patents
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Abstract
Description
Claims (6)
- 複数の半導体チップを含む半導体装置を試験する試験回路において、
前記半導体装置を試験するデータを前記半導体装置の外部から受けるテスト入力端子と、
前記複数の半導体チップのうちの少なくとも1つの半導体チップと他の半導体チップとの間の信号経路であり、前記テスト入力端子に供給されたデータが伝達される複数の信号経路と、
前記少なくとも1つの半導体チップに設けられ、前記複数の信号経路を介して前記他の半導体チップに接続され、期待値を示すデータを前記複数の信号経路のいずれかを介して受けた場合、前記期待値を示すデータを転送した信号経路を示す選択信号を生成する選択信号生成部と、
前記選択信号生成部を含む半導体チップに設けられ、前記複数の信号経路に接続され、前記複数の信号経路のうち、前記半導体装置を試験する際に使用する信号経路を前記選択信号に基づいて選択する経路選択部とを有する
ことを特徴とする試験回路。 - 請求項1に記載の試験回路において、
前記選択信号生成部は、
前記複数の信号経路の各々に対応して設けられ、前記複数の信号経路を介して受けたデータをそれぞれ記憶する複数のデータ記憶部と、
前記複数のデータ記憶部のいずれかに記憶されたデータが前記期待値を示す場合、前記複数の信号経路にそれぞれ対応した複数の制御信号のうち、前記期待値を示すデータを転送した信号経路に対応する制御信号をアサートする第1制御部と、
前記複数の制御信号の各々の論理値を記憶し、記憶した論理値に基づく前記選択信号を出力する選択信号記憶部と、
アサートされた制御信号の論理値が前記選択信号記憶部に記憶された場合、前記選択信号記憶部に記憶された論理値の更新を抑止する第2制御部とを有する
ことを特徴とする試験回路。 - 請求項1または請求項2に記載の試験回路において、
前記選択信号生成部は、前記期待値を示すデータを転送した信号経路が複数存在する場合、前記期待値を示すデータを転送した複数の信号経路のうちの1つを示す選択信号を生成する
ことを特徴とする試験回路。 - 請求項1ないし請求項3のいずれか1項に記載の試験回路において、
前記複数の半導体チップの各々に設けられ、前記半導体装置を試験する試験部と、
前記半導体装置の試験結果に対応するデータを前記半導体装置の外部に出力するテスト出力端子と、
前記複数の半導体チップの少なくとも1つの半導体チップである第1の半導体チップに設けられ、前記テスト入力端子から転送されたデータを前記第1の半導体チップの試験部に転送する状態と、前記テスト入力端子から転送されたデータを、前記複数の半導体チップのうち、前記第1の半導体チップに接続された第2の半導体チップに転送する状態とのいずれかに設定される第1切り替え部と、
前記第1の半導体チップに設けられ、前記第1の半導体チップの試験部から転送されたデータを前記テスト出力端子に転送する状態と、前記第2の半導体チップから転送されたデータを前記テスト出力端子に転送する状態とのいずれかに設定される第2切り替え部とを有する
ことを特徴とする試験回路。 - 請求項1ないし請求項3のいずれか1項に記載の試験回路において、
前記複数の半導体チップの各々に設けられ、前記半導体装置を試験する試験部と、
前記半導体装置の試験結果に対応するデータを前記半導体装置の外部に出力するテスト出力端子と、
前記複数の半導体チップの少なくとも1つの半導体チップである第1の半導体チップに設けられ、前記テスト入力端子から転送されたデータを前記第1の半導体チップの試験部に転送する状態と、前記テスト入力端子から転送されたデータを、前記複数の半導体チップのうち、前記第1の半導体チップに接続された第2の半導体チップに転送する状態と、前記テスト入力端子から転送されたデータを前記第1の半導体チップの試験部および前記第2の半導体チップに転送する状態とのいずれかに設定される第1切り替え部と、
前記第1の半導体チップに設けられ、前記第1の半導体チップの試験部から転送されたデータを前記テスト出力端子に転送する状態と、前記第2の半導体チップから転送されたデータを前記テスト出力端子に転送する状態とのいずれかに設定される第2切り替え部とを有する
ことを特徴とする試験回路。 - 複数の半導体チップを含む半導体装置を試験するデータを前記半導体装置の外部から受けるテスト入力端子と、前記複数の半導体チップのうちの少なくとも1つの半導体チップと他の半導体チップとの間の信号経路であり、前記テスト入力端子に供給されたデータが伝達される複数の信号経路と、前記少なくとも1つの半導体チップに設けられ、前記複数の信号経路を介して前記他の半導体チップに接続され、期待値を示すデータを前記複数の信号経路のいずれかを介して受けた場合、前記期待値を示すデータを転送した信号経路を示す選択信号を生成する選択信号生成部と、前記選択信号生成部を含む半導体チップに設けられ、前記複数の信号経路に接続され、前記複数の信号経路のうち、前記半導体装置を試験する際に使用する信号経路を前記選択信号に基づいて選択する経路選択部とを有する試験回路の制御方法において、
前記半導体装置を試験するテスト装置が、前記期待値と同じ論理値のデータを前記テスト入力端子に供給し、
前記経路選択部が前記半導体装置を試験する際に使用する信号経路を選択した後に、前記テスト装置が、前記半導体装置を試験するデータを前記テスト入力端子に供給する
ことを特徴とする試験回路の制御方法。
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EP15196814.6A EP3029684B1 (en) | 2014-12-02 | 2015-11-27 | Test circuit and method for controlling test circuit |
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JP2019053395A (ja) * | 2017-09-13 | 2019-04-04 | 三菱スペース・ソフトウエア株式会社 | コピー数計測装置、コピー数計測プログラム、コピー数計測方法および遺伝子パネル |
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US9835685B2 (en) | 2017-12-05 |
US20160154057A1 (en) | 2016-06-02 |
JP6413711B2 (ja) | 2018-10-31 |
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