Renesas R8C/Tiny Series User Manual page 23

Table 9-9 below shows the LIN header connections.
Pin
1
2
Pin
1
2
3
Function
Power Supply (for LIN module)
GROUND
Function
Power Supply (for LIN module)
LIN Bus Line
GROUND
Table 9-9: LIN Headers
J5
Signal Name
VBAT
GND
LIN
Signal Name
VBAT
LIN
GND
19