User And Reset Switches; Mcu Boot Options; Figure 12. User Leds; Figure 13. Power Led - Renesas RX600 Series User Manual

Renesas RX Family

5.5.2 User and Reset Switches

Two miniature, momentary, mechanical push-button type SMT switches are mounted on the CK-RX65N
board.
Pressing the Reset switch (S1) generates a reset signal to restart the RX MCU.

Table 14. CK-RX65N Board Switches

Designator Function
S1 MCU Reset Switch
S2 User Switch

5.5.3 MCU Boot Options

When the MCU is released from reset, the levels on the MD, UB, and UPSEL pins determine the boot mode
of the MCU.
Three two-pin jumpers (J11, J21 and J22) are provided to select the boot mode of the RX MCU. The tables
below give the available options.

Table 15. Boot Mode Selection

Boot Mode
SCI Boot Mode
USB Boot Mode
Normal Operation (Single Chip Mode)
R20UT5100EG0100 Rev. 1.00
May.17.22

Figure 12. User LEDs

Figure 13. Power LED

MCU Control Port
RESET#
PD1 (IRQ01)

Figure 14. Reset and User Switches

J11 (MD)
Closed
Closed
Open
CK-RX65N v1 – User's Manual
Button Color
Red
Blue
J21 (UB)
Closed
Open
Closed
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