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
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