| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a data processor for controlling the parallelism of parallel processing, and for easily operating power consumption control corresponding to the parallelism without increasing any logical scale. SOLUTION: A CPU 1 capable of parallel arithmetic processing by using plural executing parts (EX0-EX3) by decoding read instructions stops the operation clock signal of any executing part in a non-operational state, and inhibits any data input or output when the number of arithmetic processing to be executed in parallel is smaller than the number of executing parts at the time of operating the parallel arithmetic processing. In this case, an instruction code itself to designate the contents of the arithmetic processing at the executing parts is provided with information indicating whether or not the processing should be executed in parallel. Thus, it is possible to reduce any undesired power consumption as necessary.</p> |
