| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To collectively inspect a plurality of data holding performances of flip flops. <P>SOLUTION: A clock signal is applied to a plurality of flip flops interconnected in series so as to form a scan chain, predetermined data is input into the plurality of flip flops via a scan chain, and the input data is held in a state where the supply of the clock signal to the plurality of flip flops is stopped for a predetermined time. Then, the clock signal is supplied again, data held by the plurality of flip flops is read via the scan chain, and the input data is compared with the read data, thereby inspecting the data holding performances of the plurality of flip flops. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
