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1. 发明授权

US5153880A Field-programmable redundancy apparatus for memory arrays 失效
标题翻译：用于存储阵列的现场可编程冗余设备
公开(公告)号：US5153880A
公开(公告)日：1992-10-06
申请号：US491749
申请日：1990-03-12
申请人： William H. Owen , John Caywood , Joseph Drori , James Jaffe , Isao Nojima , Jeffrey Sung , Ping Wang
发明人： William H. Owen , John Caywood , Joseph Drori , James Jaffe , Isao Nojima , Jeffrey Sung , Ping Wang
IPC分类号： G11C29/00
CPC分类号： G11C29/789 , G11C29/835 , G11C29/838
摘要： A field-programmable redundancy apparatus for integrated circuit semiconductor memory arrays is disclosed. The present invention allows the user to replace a defective memory cell with a redundant memory cell while the integrated circuit memory array is in the field. The user communicates with the redundancy apparatus over the standard signal paths with standard voltage levels of the integrated circuit semiconductor memory array. The redundancy apparatus detects a predetermined code sequence on one or more of the address and data lines of the memory array to enter a special redundancy-reconfiguration mode. In the reconfiguration mode, the redundancy apparatus provides information on the availability and functionality of the redundant memory cells and enables the user to replace a defective memory cell with a selected redundant memory cell. The field-programmable redundance apparatus may comprise nonvolatile memory means, such as EEPROM's, to store the replacements of primary memory cells with redundant memory cells. In the reconfiguration mode, detection of a second predetermined code sequence causes the reconfiguration mode to be exited.
摘要翻译：公开了一种用于集成电路半导体存储器阵列的现场可编程冗余装置。本发明允许用户在集成电路存储器阵列处于现场时用冗余存储器单元替换有缺陷的存储单元。用户通过具有集成电路半导体存储器阵列的标准电压电平的标准信号路径与冗余设备进行通信。冗余设备在存储器阵列的一个或多个地址和数据线上检测预定的代码序列，以进入特殊的冗余重新配置模式。在重新配置模式中，冗余设备提供关于冗余存储器单元的可用性和功能的信息，并且使得用户能够用所选择的冗余存储器单元来替换有缺陷的存储器单元。现场可编程冗余装置可以包括诸如EEPROM的非易失性存储装置，以存储具有冗余存储器单元的主存储器单元的替换。在重新配置模式中，第二预定代码序列的检测导致重新配置模式被退出。

2. 发明授权

US5161157A Field-programmable redundancy apparatus for memory arrays 失效
标题翻译：用于存储器阵列的现场可编程冗余装置
公开(公告)号：US5161157A
公开(公告)日：1992-11-03
申请号：US802005
申请日：1991-11-27
申请人： William H. Owen , John Caywood , Joseph Drori , James Jaffe , Isao Nojima , Jeffrey Sung , Ping Wang
发明人： William H. Owen , John Caywood , Joseph Drori , James Jaffe , Isao Nojima , Jeffrey Sung , Ping Wang
IPC分类号： G06F11/00 , G11C29/00
CPC分类号： G11C29/789 , G06F11/006 , G11C29/835 , G11C29/838
摘要： A field-programmable redundancy apparatus for integrated circuit semiconductor memory arrays is disclosed. The present invention allows the user to replace a defective memory cell with a redundant memory cell while the integrated circuit memory array is in the field. The user communicates with the redundancy apparatus over standard signal paths of the integrated circuit semiconductor memory array and with standard voltage levels. The redundancy apparatus detects a predetermined code sequence on one or more of the address and data lines of the memory array to enter a special redundancy-reconfiguration mode. In the reconfiguration mode, the redundancy apparatus provides information on the availability and functionality of the redundant memory cells and enables the user to replace a defective memory cell with a selected redundant memory cell. The field-programmable redundancy apparatus may comprise nonvolatile memory means, such as EEPROM's, to store the replacements of primary memory cells with redundant memory cells. In the reconfiguration mode, detection of a second predetermined code sequence causes the reconfiguration mode to be exited.
摘要翻译：公开了一种用于集成电路半导体存储器阵列的现场可编程冗余装置。本发明允许用户在集成电路存储器阵列处于现场时用冗余存储器单元替换有缺陷的存储单元。用户通过集成电路半导体存储器阵列的标准信号路径与标准电压电平与冗余设备进行通信。冗余设备在存储器阵列的一个或多个地址和数据线上检测预定的代码序列，以进入特殊的冗余重新配置模式。在重新配置模式中，冗余设备提供关于冗余存储器单元的可用性和功能的信息，并且使得用户能够用所选择的冗余存储器单元来替换有缺陷的存储器单元。现场可编程冗余设备可以包括非易失性存储器装置，例如EEPROM，用于存储具有冗余存储器单元的主存储器单元的替换。在重新配置模式中，第二预定代码序列的检测导致重新配置模式被退出。

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