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Is it OK to use RXD pin as general I/O using synchronous serial interface

Latest Updated:03/29/2013

Question:

Is it possible to use the RXD pin as a general I/O port when using only transmission function in synchronous serial interface mode?

Answer:

Yes, it is possible.
In this case, make sure to set the RE bit in the UiC1 register to 0 (reception disabled).
Suitable Products
R32C/160, R32C/161
R32C/151, R32C/152, R32C/153, R32C/156, R32C/157
R32C/142, R32C/145
R32C/120, R32C/121
R32C/116A, R32C/117A, R32C/118A
R32C/116, R32C/117, R32C/118
R32C/111