Serial Port - Renesas RSKM32C87 User Manual

6.4. Serial port

The microcontroller programming serial port 1 is connected to the E8a connector. A serial port can be used by moving option resistors and
fitting the D connector. This can be connected to serial channel 1 if the E8a is disabled from using channel 1; or serial channel 0 while the
E8a is enabled.
Description Function
TxD1 Programming
Serial Port
RxD1 Programming
Serial Port
CLK1 Programming
Serial Port
If a serial port is used the D-connector U3 must be fitted and the RS232 transceiver enabled.
Description
RS232 Disables/Enables
Transceiver U3 RS232
Enable Transceiver
An additional serial port is connected to the application headers.
Fit For E8a
R13
R12
R14
Table 6-3: Serial port connections
Function Fit For
RS233
Enable
R42
Remove for Fit for
E8a RS232
Channel 0
R68 R69
R44 R47
NA NA
Remove for Fit For
RS233 RS233
Enable Disable
R39 R39
Table 6-4: RS232 enable
8
Remove for Fit for
RS232 RS232
Channel 0 Channel 1
R68 R68
R44 R44
NA NA
Remove for
RS233
Disable
R42
Remove for
RS232
Channel 1
R69, R13
R47, R12
R14