Debug And Trace; Debug On-Board; Figure 7. Ck-Rx65N Debug Interface; Table 3. Debug Modes - Renesas RX600 Series User Manual

Renesas RX Family

5.2 Debug and Trace

The CK-RX65N board supports one debug mode.

Table 3. Debug Modes

Debug Mode Debug MCU
(the one that
connects to the
IDE on PC)

Debug on-board

E2OB (on-board) RX65N (on-board)
Notes: See Table 4 for the Debug USB connector pin definition.
5.2.1 Debug On-Board
The on-board debug functionality is provided using a Renesas E2 On Board debugger. Debug USB Micro-B
connector (J14) connects the E2OB debug MCU to an external USB Full Speed host, allowing debugging
and re-programming of the target RX MCU firmware.
The E2OB debug MCU connects to the target RX MCU using the SWD interface.

Table 4. Debug USB Connector

Debug USB Connector
Pin Description
J14-1 +5 VDC
J14-2 Data-
J14-3 Data+
J14-4 USB ID, jack internal switch, cable inserted
J14-5 Ground
A green indicator, LED5, shows the visual status of the debug interface. When the CK-RX65N board is
powered on, and LED5 is blinking, it indicates that the E2 Emulator On-Board debugger is not connected to
a programming host. When LED5 is on solid, it indicates that it is connected to a programming interface.
When LED5 is flickering, it indicates that data is being transferred between the E2 Emulator On-Board
debugger and the programming host.
5.2.1.1 Debugger Jumper Settings

Table 5. COMM MODE Jumper J15

Jumper Position
Closed
Open

Table 6. Debug Jumper J16

Jumper Position
Pins 1-2
Pins 2-3
R20UT5100EG0100 Rev. 1.00
May.17.22
Target MCU
(the one that is
being debugged)
Function
E2OB Debugger acts as a serial to USB communications port
E2OB Debugger normal debugging mode
Function
Debugger enabled
Debugger held in reset (RX65N MCU free-running operation)
`

Figure 7. CK-RX65N Debug Interface

CK-RX65N v1 – User's Manual
Debugging Connector Used
Interface/Protocol
SWD Micro USB (J14)
CK-RX65N
Signal/Bus
+5V_USB_DBG
USB_DM (U9-18)
USB_DP (U9-19)
NC
GND
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