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MKY40 User’s Manual
7.3.4
Logic Setting of General-purpose External I/O Pins (INV0 to INV7)
Set the logic of the 32 general-purpose external I/O pins (Io0 to Io31) by a combination of High or Low levels to be input to the INV0 to INV7 pins (pins 13 to 20) (Figs. 7.1, 7.2, 7.7, Tables 7-1, 7-2).
If the setting of the INV0 to INV7 pins is changed when the MKY40 in IO mode is operating, the logic of general-purpose external I/O pins (Io0 to Io31) changes. In this case, the
logic transition time of the general-purpose external I/O pins (Io0 to Io31) during operation
varies according to the connection environments (such as load capacity). The output level
depends on the operating state. Therefore, StepTechnica recommends not changing the setting of the INV0 to INV7 pins during operation.
When intentionally changing the setting of the INV0 to INV7 pins during operation, take
care not to bring problems.
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