Halts the clock supplied to the 16-bit timer RJn.
Remark 
Calling this API function changes the 
16-bit timer RJn to reset status.
For this reason, writes to 
the control registers after this API function is called are ignored.
[Syntax]
void R_TMR_RJn_Set_PowerOff ( void );
Remark n is the channel number.
[Argument(s)]
None.
[Return value]
None.