Renesas R8C/25 Manual De Usuario

 

6.4. Serial port 

The microcontroller programming serial port 1 is connected to the RS232  transceiver. This serial port can optionally be connected to the 

RS232 transceiver as well by fitting option resistors. The connections to be fitted are listed in the table 6-3. 

TxD1 

Programming Serial Port  R45 

RxD1 

Programming Serial Port  R46 

A Secondary serial port is connected to the application headers. This is shared with the LIN module. 

6.5. LCD Module 

A LCD module is supplied to be connected to the connector J8. This should be fitted so that the LCD module lies over J1. Care should be 

taken to ensure the pins are inserted correctly into J8.The LCD module uses a 4 bit interface to reduce the pin allocation. No contrast 

control is provided; this is set by a resistor on the supplied display module. The module supplied with the RSK only supports 5V operation. 

Table 6-4 shows the pin allocation and signal names used on this connector. 

1 Ground 

- 

2 5V 

Only 

- 

3 No 

Connection 

- 

4 LCD_RS 

31 

5 

R/W (Wired to Write only) 

- 

6 LCD_E 

30 

7 No 

Connection 

- 

8 No 

Connection 

- 

9 No 

Connection 

- 

10 No 

Connection 

- 

11 LCD_D4 

51 

12 LCD_D5 

50 

13 LCD_D6 

49 

14 LCD_D7 

48 

8