Semiconductor integrated circuit including test circuit
    1.
    发明公开
    Semiconductor integrated circuit including test circuit 失效
    Integrierte Halbleiterschaltung mitPrüfschaltung。

    公开(公告)号:EP0632385A1

    公开(公告)日:1995-01-04

    申请号:EP94109636.4

    申请日:1994-06-22

    IPC分类号: G06F11/26

    CPC分类号: G06F11/22

    摘要: A first test circuit (21) is connected to one end of a first wiring line (40), and a second test circuit (22) is connected to one end of a second wiring line (41). The second wiring line (41) serves as a data bus. N-channel MOS transistors (50, 51), connected in series, are provided between the first and second wiring lines (40, 41) and located below a third wiring line (42). The transistors (50, 51) are set in an conductive state by a gate control signal (TEST) from a test control circuit (53) in a test mode, and are set in an OFF state in a normal operation mode. In the normal operation mode, the capacitance between the first and second wiring lines (40, 41) is small and does not adversely affect the operation speed of an integrated circuit.

    摘要翻译: 第一测试电路(21)连接到第一布线(40)的一端,第二测试电路(22)连接到第二布线(41)的一端。 第二布线(41)用作数据总线。 串联连接的N沟道MOS晶体管(50,51)设置在第一和第二布线(40,41)之间并位于第三布线(42)的下方。 晶体管(50,51)在测试模式下通过来自测试控制电路(53)的门控制信号(TEST)设置在导通状态,并且在正常操作模式中被设置为OFF状态。 在正常工作模式中,第一和第二布线(40,41)之间的电容小,对集成电路的运行速度没有不利影响。

    Potential detecting circuit
    4.
    发明公开
    Potential detecting circuit 失效
    潜在检测电路

    公开(公告)号:EP0385469A3

    公开(公告)日:1992-04-08

    申请号:EP90104010.5

    申请日:1990-03-01

    IPC分类号: G05F3/24 G11C16/06 G11C5/14

    摘要: A potential detecting circuit comprises a first MOS transistor (N6, P6) of a first conductivity type whose drain receives an input potential whose absolute which is equal to or lower, in absolute value, than a second potential whose absolute value is higher than that of a first potential, a second MOS transistor of a second conductivity type whose source is connected to the source of the first transistor and gate receives the first potential, a third MOS transistor (N11, P11) of the first conductivity type whose source is connected to the second MOS transistor (P5, N5), source receives a reference potential whose absolute value is lower than that of the first potential, and gate receives the first potential, a detecting potential control block for applying to the first MOS transistor a potential varying in accordance with the input potential, and a potential detect output terminal for providing a detected potential, the potential detect output terminal being a junction between the drains of the second and third MOS transistors.

    Semiconductor integrated circuit including test circuit
    5.
    发明授权
    Semiconductor integrated circuit including test circuit 失效
    与测试电路的半导体集成电路

    公开(公告)号:EP0632385B1

    公开(公告)日:1998-11-04

    申请号:EP94109636.4

    申请日:1994-06-22

    IPC分类号: G06F11/26

    CPC分类号: G06F11/22

    摘要: A first test circuit (21) is connected to one end of a first wiring line (40), and a second test circuit (22) is connected to one end of a second wiring line (41). The second wiring line (41) serves as a data bus. N-channel MOS transistors (50, 51), connected in series, are provided between the first and second wiring lines (40, 41) and located below a third wiring line (42). The transistors (50, 51) are set in an conductive state by a gate control signal (TEST) from a test control circuit (53) in a test mode, and are set in an OFF state in a normal operation mode. In the normal operation mode, the capacitance between the first and second wiring lines (40, 41) is small and does not adversely affect the operation speed of an integrated circuit.

    Programmable logic circuit
    7.
    发明公开
    Programmable logic circuit 失效
    可编程逻辑电路

    公开(公告)号:EP0384429A2

    公开(公告)日:1990-08-29

    申请号:EP90103330.8

    申请日:1990-02-21

    IPC分类号: H03K19/173 H03K19/177

    CPC分类号: H03K19/17704 H03K19/1731

    摘要: A programmable logic circuit for deriving a logic output of first and second signals includes a 2-input logic gate (2) for deriving a logic output of two signals. The 2-input logic gate (2) is constituted by connecting two 3-state circuits (1₁, 1₂) in a wired OR configuration. One (1₁) of the 3-state circuits includes a data input terminal, output control input terminal, and data output terminal, the output control input terminal receives an inverted signal ( B ) of the second signal, and the data output terminal is set to one of three states of "1", "0", and the high impedance. Likewise, the other 3-state circuit (1₂) includes a data input terminal, output control input terminal, and data output terminal, the output control input terminal receives the second signal (B), and the data output ter­minal is set to one of three states of "1", "0", and the high impedance. Each of the data input terminals of the 3-state circuits (1₁, 1₂) is supplied with a desired one of the first signal (A), an inverted signal ( A ) of the first signal, a "0" level signal, and a "1" level signal in a programmable fashion. Various logic gates can be realized by programming the supplying states of the four signals.

    摘要翻译: 用于导出第一和第二信号的逻辑输出的可编程逻辑电路包括用于导出两个信号的逻辑输出的2-输入逻辑门(2)。 2输入逻辑门(2)是通过以线或配置连接两个三态电路(1 1,1 2)而构成的。 三态电路中的一个(1 1)包括数据输入端,输出控制输入端和数据输出端,输出控制输入端接收第二信号的反相信号(B),并设置数据输出端 到“1”,“0”和高阻抗三种状态中的一种。 类似地,另一个三态电路(1 2)包括数据输入端,输出控制输入端和数据输出端,输出控制输入端接收第二信号(B),数据输出端设置为 “1”,“0”和高阻抗三种状态。 给三态电路(1 1,1 2)的每个数据输入端提供第一信号(A),第一信号的反相信号(A),“0”电平信号和 以可编程方式的“1”电平信号。 通过编程四个信号的供应状态可以实现各种逻辑门。

    Nonvolatile semiconductor memory system
    9.
    发明公开
    Nonvolatile semiconductor memory system 失效
    NichtflüchtigesHalbleiterspeichersystem。

    公开(公告)号:EP0438050A2

    公开(公告)日:1991-07-24

    申请号:EP91100033.9

    申请日:1991-01-02

    IPC分类号: G11C16/06

    摘要: An EPROM integrated circuit (20) includes a plurality of banks. When a data write operation is to be performed for this EEPROM integrated circuit (20), a bank which is used once is not used again, but the operation is constantly performed for new banks. In order to select a bank, a write number storage area (21) is provided in the EPROM integrated circuit (20), and the contents of the write number storage area (21) are updated by a write number updating circuit (29) each time the write operation is performed for a new bank.

    摘要翻译: EPROM集成电路(20)包括多个存储体。 当对该EEPROM集成电路(20)执行数据写入操作时,一次使用的存储体不再被使用,但是对于新的存储体不断地执行操作。 为了选择存储体,在EPROM集成电路(20)中设置写入存储区域(21),写入数量存储区域(21)的内容由写入数量更新电路(29)进行更新 对新银行执行写入操作的时间。

    Potential detecting circuit
    10.
    发明公开
    Potential detecting circuit 失效
    电位检测电路

    公开(公告)号:EP0385469A2

    公开(公告)日:1990-09-05

    申请号:EP90104010.5

    申请日:1990-03-01

    IPC分类号: G05F3/24 G11C16/06 G11C5/14

    摘要: A potential detecting circuit comprises a first MOS transistor (N6, P6) of a first conductivity type whose drain receives an input potential whose absolute which is equal to or lower, in absolute value, than a second potential whose absolute value is higher than that of a first potential, a second MOS transistor of a second conductivity type whose source is connected to the source of the first transistor and gate receives the first potential, a third MOS transistor (N11, P11) of the first conductivity type whose source is connected to the second MOS transistor (P5, N5), source receives a reference potential whose absolute value is lower than that of the first potential, and gate receives the first potential, a detecting potential control block for applying to the first MOS transistor a potential varying in accordance with the input potential, and a potential detect output terminal for providing a detected potential, the potential detect output terminal being a junction between the drains of the second and third MOS transistors.

    摘要翻译: 电位检测电路包括第一导电类型的第一MOS晶体管(N6,P6),其漏极接收绝对值等于或小于绝对值的绝对值大于第二绝对值的第二电位的输入电位 第一电位,第二导电类型的第二MOS晶体管,其源极连接到第一晶体管的源极并且栅极接收第一电位;第一导电类型的第三MOS晶体管(N11,P11),其源极连接到 所述第二MOS晶体管(P5,N5)的源极接收其绝对值低于所述第一电位的基准电位,并且所述栅极接收所述第一电位;检测电位控制块,用于向所述第一MOS晶体管施加电位变化 根据所述输入电位以及用于提供检测电位的电位检测输出端子,所述电位检测输出端子是所述电位检测输出端子 ns的第二和第三MOS晶体管。