发明名称 Semiconductor test device and timing measurement method thereof
摘要 A semiconductor test equipment and a timing measuring method for use in the semiconductor test equipment are provided, that can perform simultaneous measurement of timings of defined times between edges in cycles even in a case where a capacity is large as in a test pattern for the semiconductor test equipment or a case where the cycles are away from each other. In order to achieve this, the semiconductor test equipment includes: a data shifting flip-flip for shifting input data with a reference clock of the semiconductor test equipment by a period of one clock, provided in a secondary logical comparison circuit 71 ; the first logical comparison and selection circuit 71 a for determining whether timings of the first defined time Ta that is a period between two pre-selected edges are good or not, and outputting a determination result; and the second logical comparison and selection circuit 71 b for determining whether timings of the second defined time Tb that is a period between two pre-selected edges are good or not, and outputting a determination result.
申请公布号 KR100988486(B1) 申请公布日期 2010.10.20
申请号 KR20047013658 申请日期 2003.03.07
申请人 发明人
分类号 G01R31/28 主分类号 G01R31/28
代理机构 代理人
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