Traditional Pin Header Jumpers; Default Jumper Configuration; Figure 6. Copper Jumpers; Table 2. Default Jumper Settings - Renesas RA4 Series User Manual

Renesas RA Family
A solder-bridge jumper is provided with two isolated pads that may be joined together by one of three
methods:
•
Solder may be applied to both pads to develop a bulge on each and the bulges joined by touching a
soldering iron across the two pads.
•
A small wire may be placed across the two pads and soldered in place.
•
A SMT resistor, size 0805, 0603, or 0402, may be placed across the two pads and soldered in place. A
zero-ohm resistor shorts the pads together.
For any copper jumper, the connection is considered closed if there is an electrical connection between the
pads (default for trace-cut jumpers.) The connection is considered open if there is no electrical connection
between the pads (default for the solder-bridge jumpers.)

4.3.2 Traditional Pin Header Jumpers

These jumpers are traditional small pitch jumpers that require an external shunt to open/close them. The
traditional pin jumpers on the EK-RA4E2 board are 2 mm pitch headers and require compatible 2 mm shunt
jumpers.

4.3.3 Default Jumper Configuration

The following table describes the default settings for each jumper on the EK-RA4E2 board. This includes
copper jumpers (Ex designation) and traditional pin jumpers (Jx designation.)
The Circuit Group for each jumper is the designation found in the board schematic (available in the Design
Package). Functional details for many of the listed jumpers may be found in sections associated with each
functional area of the kits.

Table 2. Default Jumper Settings

Location Circuit Group
J6 J-Link OB
J8 J-Link OB
J9 J-Link OB
J16 MCU boot
mode
J29 J-Link OB
E14 Pmod 1
E15 Pmod 1
E16 Pmod 1
E17 Pmod 1
E18 Pmod 1
E19 Pmod 1
E26 User LED
E27 User LED
E28 User LED
R20UT5175EG0300 Rev. 3.00
Feb.27.23

Figure 6. Copper Jumpers

Default Open/Closed
Closed
Jumper on pins 1-2
Open
Open
Jumper on pins 1-2
Jumper on pins 3-4
Jumper on pins 5-6
Jumper on pins 7-8
Closed
Closed
Closed
Open
Open
Open
Closed
Closed
Closed
EK-RA4E2 v1 – User's Manual
Function
Configures J-Link OB connection to MCU mode
Configures the MCU for normal operation
Enables the on-board debugger
Configures the MCU for normal boot mode
Connects the J-Link OB debugger to the RA MCU
Connects P110 (MISOA/RXD9) to Pmod 1 pin 3
Connects P111 (RSPCKA/SCK9) to Pmod 1 pin 4
Connects +3.3 V to Pmod 1 pin 6 and pin 12
Connects +5.0 V to Pmod 1 pin 6 and pin 12
Connects P100 (SCL) to Pmod 1 pin 3
Connects P101 (SDA) to Pmod 1 pin 4
Connects P104 to user LED2
Connects P207 to user LED1
Connects P112 to user LED3
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