| 摘要 |
PROBLEM TO BE SOLVED: To prevent the unexpected switching of an operation mode.SOLUTION: A semiconductor device 100 includes a mode selection terminal unit Tm, a mode selection signal holding unit 11, and a mode specification signal output unit 12. The mode selection terminal unit Tm is fed a mode selection signal SEL that corresponds to a normal operation mode or a test operation mode. The mode selection signal holding unit 11 holds the mode selection signal SEL to be fed to the mode selection terminal unit Tm according to a timing signal SIG_t. If the mode selection signal SEL that is held by the mode selection signal holding unit 11 is [101], the mode specification signal output unit 12 outputs a mode specification signal MODE that corresponds to the mode selection signal SEL to be fed to the mode selection terminal unit Tm. |
