Unused I/O pins should be configured as I/O function, output direction, and left unconnected on the PC
board, to prevent a floating input and reduce power consumption. The value of the PxOUT bit is irrelevant,
since the pin is unconnected. Alternatively, the integrated pullup/pulldown resistor can be enabled by
setting the PxREN bit of the unused pin to prevent the floating input. See the System Resets, Interrupts,
and Operating Modes chapter for termination of unused pins.
楼主
标题置顶
标题高亮
