| 摘要 |
A semiconductor integrated circuit is provided, which decrease the circuit scale of an enabling circuit used for enabling and disabling an internal circuit. The enabling circuit has a first switching element with first and second terminals, a second switching element with first and second terminals, and a third switching element with first and second terminals. One of the first, second, and third switching elements is turned on and the remaining two ones thereof are turned off according to a program. The first terminal of the first switching element is applied with an enabling signal. The first terminal of the second switching element is applied with a disabling signal. The first terminal of the third switching element is applied with a Don't Care signal. The second terminals of the first, second, and third switching elements are connected in common to a node. One of the enabling signal, the disabling signal, and the Don't Care signal is selectively outputted to the node according to the program.
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