R_UARTFn_Set_PowerOff
Halts the clock supplied to the serial interface UARTMG.
Remark         
Calling this API function changes the serial interface UARTMG to reset 
status.
For this reason, writes to the control registers after this API 
function is called are ignored.
[Syntax]
void R_UARTMGn_Set_PowerOff ( void );
Remark n is the channel number.
[Argument(s)]
None.
[Return value]
None.