发明名称 INTEGRATED CIRCUIT
摘要 PROBLEM TO BE SOLVED: To provide an integrated circuit having a configuration in which a test mode is set without providing a terminal exclusive for the test mode. SOLUTION: The integrated circuit provided with an external connection terminal and a functional block for performing prescribed operation on the basis of an input signal inputted from the external connection terminal is equipped with: a first storage part for sampling and storing the input signal at a first edge of a clock signal and outputting the stored input signal as a first output signal at a second edge after the first edge; a second storage part for sampling and storing the first output signal outputted by the first storage part at the second edge and outputting the stored first output signal as a second output signal at a third edge after the second edge; and a test mode setting circuit for producing a test mode signal indicating whether or not the functional block is set to the test mode on the basis of the first and second output signals. COPYRIGHT: (C)2003,JPO
申请公布号 JP2003273232(A) 申请公布日期 2003.09.26
申请号 JP20020076227 申请日期 2002.03.19
申请人 RICOH CO LTD 发明人 HARA KAZUHIKO
分类号 G01R31/28;G01R31/3185;H01L21/822;H01L27/04;(IPC1-7):H01L21/822;G01R31/318 主分类号 G01R31/28
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