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    • 9. 发明授权
    • Semiconductor device including test-facilitating circuit using built-in self test circuit
    • 半导体器件包括使用内置自检电路的测试便利电路
    • US07032141B2
    • 2006-04-18
    • US10198106
    • 2002-07-19
    • Tetsushi Tanizaki
    • Tetsushi Tanizaki
    • G11C29/00
    • G11C29/20G11C29/14
    • A test interface circuit, which has a simple pattern generator mounted on a semiconductor device having a mounted memory, consists of a command analysis section which analyses a command of three bits received from a tester, outputs an analysis result to a memory core and controls an operation of the memory core, and an address counter which counts addresses and outputs the addresses to the memory core in accordance with a counter control instruction of two bits received from the tester. It is, therefore, possible to make a circuit for testing the memory core small in scale and to decrease the number of pins for testing the memory core, so that it is possible to use an inexpensive tester and to reduce cost required to test the memory core.
    • 具有安装在具有安装存储器的半导体器件上的简单图形发生器的测试接口电路由分析从测试器接收的三位指令的命令分析部分组成,将分析结果输出到存储器核心并控制 存储器核心的操作,以及根据从测试器接收的两个位的计数器控制指令对地址进行计数并将地址输出到存储器核心的地址计数器。 因此,可以制造用于小规模测试存储器芯片的电路并且减少用于测试存储器核心的引脚数量,使得可以使用廉价的测试器并且降低测试存储器所需的成本 核心。
    • 10. 发明授权
    • Circuit for reducing test time and semiconductor memory device including the circuit
    • 降低测试时间的电路和包括电路的半导体存储器件
    • US06779139B2
    • 2004-08-17
    • US09845494
    • 2001-05-01
    • Masaru HaraguchiKatsumi DosakaTetsushi Tanizaki
    • Masaru HaraguchiKatsumi DosakaTetsushi Tanizaki
    • G11C2900
    • G11C29/44G01R31/318566G11C29/38
    • A semiconductor memory device includes: a determination section; an expected value control section; and an accumulation section. The determination section determines coincidence/non-coincidence between input data and an expected value. The expected value control section catches a read expected value in a read operation only. The accumulation section catches a determination result according to an accumulation-transmission signal. When the accumulation-transmission signal is in a transmission state, a determination result is caught, while when the accumulation-transmission signal enters an accumulation state, the next determination result is caught in a case of coincidence determination and once a non-coincidence determination result is caught, thereafter the non-coincidence determination result continues to be held.
    • 半导体存储器件包括:确定部分; 预期价值控制部分; 和积累部分。 确定部分确定输入数据与期望值之间的一致/不一致。 期望值控制部分仅在读取操作中捕获读取期望值。 累积部根据累积发送信号来取得判定结果。 当累积发送信号处于发送状态时,判断结果被捕获,而当累计发送信号进入累加状态时,在一致判断的情况下,下一个确定结果被捕获,并且一旦不一致确定结果 被捕获,此后不合格确定结果继续保持。