Datasheet

RL78/L12 CHAPTER 4 PORT FUNCTIONS
R01UH0330EJ0200 Rev.2.00 129
Dec 13, 2013
4.6.2 Notes on specifying the pin settings
For an output pin to which multiple new functions are assigned, the output of the unused alternate function must be set
to its initial state so as to prevent conflicting outputs. This also applies to the functions assigned by using the peripheral
I/O redirection register (PIOR). For details about the alternate output function, see 4.5 Register Settings When Using
Alternate Function.
No specific setting is required for input pins because the output function of their alternate functions is disabled (the
buffer output is Hi-Z).
Disabling the unused functions, including blocks that are only used for input or do not have I/O, is recommended to
lower power consumption.
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