Traditional Pin Header Jumpers; Default Jumper Configuration; Figure 6. Copper Jumpers; Table 1. Default Jumper Settings - Renesas RA6 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-RA6M4 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-RA6M4 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 1. Default Jumper Settings

Location Circuit Group
J6 J-Link OB
J8 J-Link OB
J9 J-Link OB
J29 J-Link OB
J16 MCU Boot Mode
J12 USB FS
J15 USB FS
E1 MCU Power
E2 MCU Power
E3 MCU Power
E4 MCU Power
E5 MCU Power
E6 MCU Power
E7 MCU Clock
E8 MCU Clock
E9 MCU Clock
R20UT4836EG0100 Rev 1.00
Aug.24.20

Figure 6. Copper Jumpers

Default Open/Closed
Closed
Jumper on pins 1-2
Open
Jumper on pins 1-2
Jumper on pins 3-4
Jumper on pins 5-6
Jumper on pins 7-8
Open
Jumper on pins 2-3
Jumper on pins 1-2
Closed
Closed
Closed
Closed
Closed
Closed
Closed
Open
Closed
EK-RA6M4 v1 – User's Manual
Function
Configures J-Link OB connection to MCU mode
Configures the MCU for normal operation
Configures Reset# for on-board debugger mode
Connects the J-Link OB debugger to the RA
MCU
Configures the MCU for normal boot mode
Sets USB FS power to device mode
Connects micro-USB power to system power
Connects VREFL to GND
Connects VREFH to +3.3 V
Connects AVCC0 to +3.3 V
Connects AVSS0 to GND
Connects VREFL0 to GND
Connects VREFH0 to +3.3 V
Connects P212/EXTAL to 24 MHz crystal
Connects XCIN pin to pin headers
Connects XCIN to 32 kHz crystal
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