| 摘要 |
To provide a microcontroller having a function for stopping supply of a clock signal to a slave block and a function for properly stopping the access to a slave block to which supply of a clock signal is stopped. A microcontroller of the present invention has a master block 101 for controlling the whole microcontroller, slave blocks 102 and 103 to be controlled by the master block 101, clock-signal control means 106 and 107 for controlling supply/stop of a clock signal in response to a clock control signal output from the master block 101, and a default slave block 104 for outputting a response signal RESP instead of a slave block to which supply of a clock signal is stopped.
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