| 摘要 |
A peripheral circuit control register has a plurality of bits corresponding respectively to peripheral resources. A decoder activates an access signal to the peripheral resource at an access destination when the bit corresponding to the peripheral resource at the access destination in the peripheral circuit control register is under a set state in response to occurrence of access to any of the peripheral resources by a CPU. A functional specification of an evaluation chip can be made equivalent to those of product chips and development of a wrong user program can be prevented by setting in advance the bits of the peripheral circuit control register corresponding to the peripheral resources mounted to the product chip to the set state.
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