JP2019128968A - 半導体記憶装置および解析システム - Google Patents
半導体記憶装置および解析システム Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 53
- 238000004458 analytical method Methods 0.000 title claims description 36
- 230000015654 memory Effects 0.000 claims abstract description 64
- 230000002159 abnormal effect Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 description 10
- 230000007547 defect Effects 0.000 description 7
- 230000002950 deficient Effects 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000011017 operating method Methods 0.000 description 1
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/317—Testing of digital circuits
- G01R31/3181—Functional testing
- G01R31/3183—Generation of test inputs, e.g. test vectors, patterns or sequences
- G01R31/318342—Generation of test inputs, e.g. test vectors, patterns or sequences by preliminary fault modelling, e.g. analysis, simulation
- G01R31/31835—Analysis of test coverage or failure detectability
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- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/06—Auxiliary circuits, e.g. for writing into memory
- G11C16/22—Safety or protection circuits preventing unauthorised or accidental access to memory cells
- G11C16/225—Preventing erasure, programming or reading when power supply voltages are outside the required ranges
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- G11C29/12—Built-in arrangements for testing, e.g. built-in self testing [BIST] or interconnection details
- G11C29/12015—Built-in arrangements for testing, e.g. built-in self testing [BIST] or interconnection details comprising clock generation or timing circuitry
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- G11C16/14—Circuits for erasing electrically, e.g. erase voltage switching circuits
- G11C16/16—Circuits for erasing electrically, e.g. erase voltage switching circuits for erasing blocks, e.g. arrays, words, groups
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- G—PHYSICS
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- G—PHYSICS
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- G—PHYSICS
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- G—PHYSICS
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- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
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-
- G—PHYSICS
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- G11C—STATIC STORES
- G11C8/00—Arrangements for selecting an address in a digital store
- G11C8/08—Word line control circuits, e.g. drivers, boosters, pull-up circuits, pull-down circuits, precharging circuits, for word lines
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R31/308—Contactless testing using non-ionising electromagnetic radiation, e.g. optical radiation
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- G—PHYSICS
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- G11C2029/0407—Detection or location of defective memory elements, e.g. cell constructio details, timing of test signals on power on
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- G—PHYSICS
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- G11C29/08—Functional testing, e.g. testing during refresh, power-on self testing [POST] or distributed testing
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- G—PHYSICS
- G11—INFORMATION STORAGE
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- G11C29/04—Detection or location of defective memory elements, e.g. cell constructio details, timing of test signals
- G11C29/08—Functional testing, e.g. testing during refresh, power-on self testing [POST] or distributed testing
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-
- G—PHYSICS
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- G11C29/04—Detection or location of defective memory elements, e.g. cell constructio details, timing of test signals
- G11C29/50—Marginal testing, e.g. race, voltage or current testing
- G11C2029/5006—Current
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- Theoretical Computer Science (AREA)
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Abstract
Description
前記判定手段により特定のモードであると判定した場合、メモリセルアレイに関する動作の実行中に当該動作を停止するブレークシーケンスを実行する実行手段とを含む。
200:解析装置
202、204、206:端子
210:撮像カメラ
220:リーク電流検出部
230:異常位置特定部
240:異常位置表示部
300:フラッシュメモリ
Claims (14)
- メモリセルアレイに関する動作を制御するためのコントローラを含む半導体記憶装置の動作方法であって、
前記コントローラは、
外部端子に供給される信号に基づき半導体記憶装置が特定のモードにあるか否かを判定し、
特定のモードであると判定した場合、メモリセルアレイに関する動作の実行中に当該動作を停止するブレークシーケンスを実行する、動作方法。 - 前記ブレークシーケンスは、
メモリセルアレイに関する動作を選択すること、
選択された動作を実行すること、および
選択されたタイミングで動作を停止することを含む、請求項1に記載の動作方法。 - 前記ブレークシーケンスは、予め決められた記憶領域から、メモリセルアレイに関する動作を選択するための選択情報および選択されたタイミングで動作を停止するための停止情報を読み出すことを含む、請求項2に記載の動作方法。
- 前記コントローラは、外部端子に供給される電源電圧に基づきパワーオンモードであると判定した場合に、前記ブレークシーケンスを実行する、請求項1ないし3いずれか1つに記載の動作方法。
- 動作方法はさらに、前記ブレークシーケンスを実行するか否かを設定することを含み、
前記コントローラは、実行することが設定されている場合に、前記ブレークシーケンスを実行する、請求項1ないし4いずれか1つに記載の動作方法。 - 前記コントローラは、前記停止情報に含まれるアドレスに基づきROMからのコードの読出しを停止し、動作を停止する、請求項3に記載の動作方法。
- 前記コントローラは、メモリセルアレイの読出し動作においてビット線がプリチャージされたとき、動作を停止する、請求項1ないし6いずれか1つに記載の動作方法。
- メモリセルアレイと、
メモリセルアレイに関する動作を制御するためのコントローラと、
外部端子とを有し、
前記コントローラは、
外部端子に供給される信号に基づき半導体記憶装置が特定のモードにあるか否かを判定する判定手段と、
前記判定手段により特定のモードであると判定した場合、メモリセルアレイに関する動作の実行中に当該動作を停止するブレークシーケンスを実行する実行手段とを含む、半導体記憶装置。 - 前記判定手段は、外部端子に供給される電圧に基づきパワーオンモードか否かを判定し、前記実行手段は、パワーオンモードであると判定された場合に前記ブレークシーケンスを実行する、請求項8に記載の半導体記憶装置。
- 前記実行手段は、予め決められた記憶領域から、メモリセルアレイに関する動作を選択するための選択情報および選択されたタイミングで動作を停止するための停止情報を読み出し、前記実行手段はさらに、前記選択情報に従い動作を実行し、かつ前記停止情報に従い動作を停止する、請求項8または9に記載の半導体記憶装置。
- 半導体記憶装置はさらに、前記ブレークシーケンスを実行するか否かを設定するための設定手段を含み、
前記実行手段は、前記設定手段により実行することが設定されている場合に、前記ブレークシーケンスを実行する、請求項8に記載の半導体記憶装置。 - 前記実行手段は、前記停止情報に含まれるアドレスに基づきROMからのコードの読出しを停止し、動作を停止する、請求項10に記載の動作方法。
- 請求項8ないし12いずれか1つに記載の半導体記憶装置と、当該半導体記憶装置に接続された解析装置とを含む解析システムであって、
前記解析装置は、前記半導体記憶装置に電源電圧を供給し、前記半導体記憶装置において異常電流が流れる箇所を解析する、解析システム。 - 前記解析装置は、異常電流が流れる箇所を可視化する手段を含む、請求項13に記載の解析システム。
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JP2018009925A JP6502538B1 (ja) | 2018-01-24 | 2018-01-24 | 半導体記憶装置および解析システム |
TW107128762A TWI678626B (zh) | 2018-01-24 | 2018-08-17 | 半導體儲存裝置、其動作方法及分析系統 |
CN201811091663.3A CN110070901B (zh) | 2018-01-24 | 2018-09-19 | 半导体存储装置、其动作方法及分析系统 |
US16/153,844 US10641825B2 (en) | 2018-01-24 | 2018-10-08 | Semiconductor storage device, operating method thereof and analysis system |
KR1020180121809A KR102116617B1 (ko) | 2018-01-24 | 2018-10-12 | 반도체 기억장치, 그 동작 방법 및 해석 시스템 |
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CN113075532A (zh) * | 2021-03-25 | 2021-07-06 | 长鑫存储技术有限公司 | 芯片检测方法及芯片检测装置 |
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CN113724772A (zh) * | 2021-07-12 | 2021-11-30 | 深圳市美信咨询有限公司 | 存储器失效位置查找方法、装置和计算机设备 |
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