Integrated circuit and method for testing the circuit
    136.
    发明公开
    Integrated circuit and method for testing the circuit 有权
    Integrierte Schaltung und Verfahren zum Testen der Schaltung

    公开(公告)号:EP2149885A1

    公开(公告)日:2010-02-03

    申请号:EP09162648.1

    申请日:2009-06-13

    CPC classification number: G11C29/14 G11C29/1201 G11C29/12015 G11C2029/0401

    Abstract: An integrated circuit includes a memory; a memory test circuit that tests the memory; and an input/output port, wherein the memory test circuit includes a latch circuit that outputs output of the memory, an address of the memory to be accessed is changed in accordance with a first clock signal, and output of the memory corresponding to the changed address is latched in accordance with a latch signal having a cycle of an integral multiple of the first clock signal, data of the latch circuit is output via the input/output port in a cycle of the latch signal, an address of a memory cell corresponding to the output of the memory to be latched by the latch circuit is changed, and the latch and the output is repeated.

    Abstract translation: 集成电路包括存储器; 用于测试存储器的存储器测试电路; 以及输入/输出端口,其中存储器测试电路包括输出存储器的输出的锁存电路,根据第一时钟信号改变要访问的存储器的地址,并且对应于改变的存储器的存储器的输出 地址按照具有第一时钟信号的整数倍的周期的锁存信号锁存,锁存电路的数据以锁存信号的周期经由输入/输出端口输出,存储单元的地址对应 到由锁存电路锁存的存储器的输出改变,并且锁存器和输出被重复。

    Semiconductor integrated circuit and testing method of same
    138.
    发明公开
    Semiconductor integrated circuit and testing method of same 有权
    的半导体集成电路和测试方法

    公开(公告)号:EP1892725A3

    公开(公告)日:2009-11-11

    申请号:EP07114734.2

    申请日:2007-08-22

    Inventor: Yamaguchi, Kota

    CPC classification number: G11C29/006 G11C29/44 G11C29/46 G11C2029/4402

    Abstract: A program circuit (1) activates a pass signal (PASZ) when a first program unit (FS) is programmed. The first program unit (FS) is programmed when a test of an internal circuit (4) is passed. A mode setting circuit (2) switches an operation mode to a normal operation mode or a test mode by external control. A state machine (3) allows a partial circuit (4a) of the internal circuit (4) to perform an unusual operation different from a normal operation when the pass signal (PASZ) is inactivated during the normal operation mode. By recognizing the unusual operation during the normal operation mode, it can be easily recognized that a semiconductor integrated circuit is bad. Since a failure can be recognized without shifting to the test mode, for example, a user who purchases the semiconductor integrated circuit can also easily recognize the failure.

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