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.