| 摘要 |
PROBLEM TO BE SOLVED: To more surely verify a program. SOLUTION: The I/O parts 4 and 4a of this one-chip microcomputer provided with a ROM part 2 are provided with a mode switching terminal for switching normal setting and special setting for the respective I/O parts 4 and 4a so as to perform the normal setting for inputting/outputting timing controlled signals by interposing a timing circuit 5 and the special setting for inputting/outputting signals at an optional timing without interposing the timing circuit 5. Further, by using the plural pieces of the microcomputers for which the input/output state of the respective I/O parts 4 and 4a is set by the setting of the mode switching terminal, the input/output of the state same as the input/output at the time of mounting the microcomputer to a product substrate and the input/ output for which the signals to be used in the development supporting device for emulating an operation by a program are connected are obtained. |
