Rs232 Serial Port; Local Interconnect Network (Lin) - Renesas RL78 Series User Manual

RSKRL78L13
5.8

RS232 Serial Port

An RS232 serial port is fitted to the RSK and connected via a level shifter to the microcontroller Serial Array
Unit (SAU). Connections between the RS232 header and the microcontroller are listed in
Signal
Name
TXD2 SAU UART2 Transmit Signal.
RXD2 SAU UART2 Receive Signal
RS232TX External SCI Transmit Signal.
RS232RX External SCI Receive Signal.
SO00_TXD0 SAU UART0 Transmit Signal.
SI00_RXD0 SAU UART0 Receive Signal
SO10_TXD1 SAU UART1 Transmit Signal.
SI10_RXD1 SAU UART1 Receive Signal
* This connection is a not available in the default RSK configuration - refer to §6.2 for the required
modifications.
5.9

Local Interconnect Network (LIN)

A LIN transceiver IC is fitted to the RSK, and connected to the LIN MCU peripheral. For further details
regarding the LIN protocol and supported modes of operation, please refer to the RL78L13 hardware manual.
Connections between the LIN connector and the microcontroller are listed in
LIN Signal
LINTXD LIN Transmit Signal
LINRXD LIN Receive Signal
LINNSLP LIN Transceiver Device Sleep Control
R20UT2125EG0101 Rev. 1.01
Mar 10, 2014
Function
Table 5-6: Serial Port Connections
Function
Table 5-7: LIN Connections
MCU
Signal
TXD2
RXD2
n/a
n/a
LINTXD_SO00_TXD0
LINRXD_SI00_RXD0
SO10_TXD1
SI10_RXD1_IVCMP1
Table 5-7
5. User Circuitry
Table 5-6 below.
RS232
Connector
Pin
Pin
60 2
61 3
2*
3*
64 2*
65 3*
7 2*
6 3*
below.
MCU
Port Pin
P00 64
P17 65
P16 66
Page 17 of 36