Renesas EK-RA2L1 User manual

Rev. 1.00 Oct 2020
Renesas RA Family
RA2 Series
User’ s Manual
www.renesas.com
All information contained in these materials, including products and product specifications, represents
information on the product at the time of publication and is subject to change by Renesas Electronics
Corp.
without notice. Please review the latest information published by Renesas Electronics Corp.
through various means, including the Renesas Electronics Corp. website (http://www.renesas.com).
RA2L1 Group
Evaluation Kit for RA2L1
Microcontroller Group
EK-RA2L1
v1
User’s Manual
User’s Manual

© 2020 Renesas Electronics Corporation. All rights reserved.
Notice
1. Descriptions of circuits, software and other related information in this document are provided only to illustrate the operation of semiconductor products
and application examples. You are fully responsible for the incorporation or any other use of the circuits, software, and information in the design of your
product or system. Renesas Electronics disclaims any and all liability for any losses and damages incurred by you or third parties arising from the use
of these circuits, software, or information.
2. Renesas Electronics hereby expressly disclaims any warranties against and liability for infringement or any other claims involving patents, copyrights,
or other intellectual property rights of third parties, by or arising from the use of Renesas Electronics products or technical information described in this
document, including but not limited to, the product data, drawings, charts, programs, algorithms, and application examples.
3. No license, express, implied or otherwise, is granted hereby under any patents, copyrights or other intellectual property rights of Renesas Electronics
or others.
4. You shall not alter, modify, copy, or reverse engineer any Renesas Electronics product, whether in whole or in part. Renesas Electronics disclaims any
and all liability for any losses or damages incurred by you or third parties arising from such alteration, modification, copying or reverse engineering.
5. Renesas Electronics products are classified according to the following two quality grades: “Standard” and “High Quality”. The intended applications for
each Renesas Electronics product depends on the product’s quality grade, as indicated below.
"Standard": Computers; office equipment; communications equipment; test and measurement equipment; audio and visual equipment; home
electronic appliances; machine tools; personal electronic equipment; industrial robots; etc.
"High Quality": Transportation equipment (automobiles, trains, ships, etc.); traffic control (traffic lights); large-scale communication equipment; key
financial terminal systems; safety control equipment; etc.
Unless expressly designated as a high reliability product or a product for harsh environments in a Renesas Electronics data sheet or other Renesas
Electronics document, Renesas Electronics products are not intended or authorized for use in products or systems that may pose a direct threat to
human life or bodily injury (artificial life support devices or systems; surgical implantations; etc.), or may cause serious property damage (space
system; undersea repeaters; nuclear power control systems; aircraft control systems; key plant systems; military equipment; etc.). Renesas Electronics
disclaims any and all liability for any damages or losses incurred by you or any third parties arising from the use of any Renesas Electronics product
that is inconsistent with any Renesas Electronics data sheet, user’s manual or other Renesas Electronics document.
6. When using Renesas Electronics products, refer to the latest product information (data sheets, user’s manuals, application notes, “General Notes for
Handling and Using Semiconductor Devices” in the reliability handbook, etc.), and ensure that usage conditions are within the ranges specified by
Renesas Electronics with respect to maximum ratings, operating power supply voltage range, heat dissipation characteristics, installation, etc.
Renesas Electronics disclaims any and all liability for any malfunctions, failure or accident arising out of the use of Renesas Electronics products
outside of such specified ranges.
7. Although Renesas Electronics endeavors to improve the quality and reliability of Renesas Electronics products, semiconductor products have specific
characteristics, such as the occurrence of failure at a certain rate and malfunctions under certain use conditions. Unless designated as a high reliability
product or a product for harsh environments in a Renesas Electronics data sheet or other Renesas Electronics document, Renesas Electronics
products are not subject to radiation resistance design. You are responsible for implementing safety measures to guard against the possibility of bodily
injury, injury or damage caused by fire, and/or danger to the public in the event of a failure or malfunction of Renesas Electronics products, such as
safety design for hardware and software, including but not limited to redundancy, fire control and malfunction prevention, appropriate treatment for
aging degradation or any other appropriate measures. Because the evaluation of microcomputer software alone is very difficult and impractical, you
are responsible for evaluating the safety of the final products or systems manufactured by you.
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(Note2) “Renesas Electronics product(s)” means any product developed or manufactured by or for Renesas Electronics.
(Rev.4.0-1 November 2017)
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General Precautions in the Handling of Microprocessing Unit and Microcontroller
Unit Products
The following usage notes are applicable to all Microprocessing unit and Microcontroller unit products from Renesas. For detailed usage notes on the
products covered by this document, refer to the relevant sections of the document as well as any technical updates that have been issued for the products.
1. Precaution against Electrostatic Discharge (ESD)
A strong electrical field, when exposed to a CMOS device, can cause destruction of the gate oxide and ultimately degrade the device operation. Steps
must be taken to stop the generation of static electricity as much as possible, and quickly dissipate it when it occurs. Environmental control must be
adequate. When it is dry, a humidifier should be used. This is recommended to avoid using insulators that can easily build up static electricity.
Semiconductor devices must be stored and transported in an anti-static container, static shielding bag or conductive material. All test and
measurement tools including work benches and floors must be grounded. The operator must also be grounded using a wrist strap. Semiconductor
devices must not be touched with bare hands. Similar precautions must be taken for printed circuit boards with mounted semiconductor devices.
2. Processing at power-on
The state of the product is undefined at the time when power is supplied. The states of internal circuits in the LSI are indeterminate and the states of
register settings and pins are undefined at the time when power is supplied. In a finished product where the reset signal is applied to the external reset
pin, the states of pins are not guaranteed from the time when power is supplied until the reset process is completed. In a similar way, the states of
pins in a product that is reset by an on-chip power-on reset function are not guaranteed from the time when power is supplied until the power reaches
the level at which resetting is specified.
3. Input of signal during power-off state
Do not input signals or an I/O pull-up power supply while the device is powered off. The current injection that results from input of such a signal or I/O
pull-up power supply may cause malfunction and the abnormal current that passes in the device at this time may cause degradation of internal
elements. Follow the guideline for input signal during power-off state as described in your product documentation.
4. Handling of unused pins
Handle unused pins in accordance with the directions given under handling of unused pins in the manual. The input pins of CMOS products are
generally in the high-impedance state. In operation with an unused pin in the open-circuit state, extra electromagnetic noise is induced in the vicinity of
the LSI, an associated shoot-through current flows internally, and malfunctions occur due to the false recognition of the pin state as an input signal
become possible.
5. Clock signals
After applying a reset, only release the reset line after the operating clock signal becomes stable. When switching the clock signal during program
execution, wait until the target clock signal is stabilized. When the clock signal is generated with an external resonator or from an external oscillator
during a reset, ensure that the reset line is only released after full stabilization of the clock signal. Additionally, when switching to a clock signal
produced with an external resonator or by an external oscillator while program execution is in progress, wait until the target clock signal is stable.
6. Voltage application waveform at input pin
Waveform distortion due to input noise or a reflected wave may cause malfunction. If the input of the CMOS device stays in the area between VIL
(Max.) and VIH (Min.) due to noise, for example, the device may malfunction. Take care to prevent chattering noise from entering the device when the
input level is fixed, and also in the transition period when the input level passes through the area between VIL (Max.) and VIH (Min.).
7. Prohibition of access to reserved addresses
Access to reserved addresses is prohibited. The reserved addresses are provided for possible future expansion of functions. Do not access these
addresses as the correct operation of the LSI is not guaranteed.
8. Differences between products
Before changing from one product to another, for example to a product with a different part number, confirm that the change will not lead to problems.
The characteristics of a Microprocessing unit or microcontroller unit products in the same group but having a different part number might differ in terms
of internal memory capacity, layout pattern, and other factors, which can affect the ranges of electrical characteristics, such as characteristic values,
operating margins, immunity to noise, and amount of radiated noise. When changing to a product with a different part number, implement a system
evaluation test for the given product.

Renesas EK-RA2L1 Disclaimer
By using this EK-RA2L1, the User accepts the following terms, which are in addition to, and control in the event of disagreement, with Renesas’ General
Terms and Conditions available at https://www.renesas.com/en-us/legal/disclaimer.html.
The EK-RA2L1 is not guaranteed to be error free, and the entire risk as to the results and performance of the EK-RA2L1 is assumed by the User. The
EK-RA2L1 is provided by Renesas on an “as is” basis without warranty of any kind whether express or implied, including but not limited to the implied
warranties of good workmanship, fitness for a particular purpose, title, merchantability, and non-infringement of intellectual property rights. Renesas
expressly disclaims any implied warranty.
Renesas does not consider the EK-RA2L1 to be a finished product and therefore the EK-RA2L1 may not comply with some requirements applicable to
finished products, including, but not limited to recycling, restricted substances and electromagnetic compatibility regulations. Refer to Certifications section,
for information about certifications and compliance information for the EK-RA2L1. It is the kit User’s responsibility to make sure the kit meets any local
requirements applicable to their region.
Renesas or its affiliates shall in no event be liable for any loss of profit, loss of data, loss of contract, loss of business, damage to reputation or goodwill, any
economic loss, any reprogramming or recall costs (whether the foregoing losses are direct or indirect) nor shall Renesas or its affiliates be liable for any
other direct or indirect special, incidental or consequential damages arising out of or in relation to the use of this EK-RA2L1, even if Renesas or its affiliates
have been advised of the possibility of such damages.
Renesas has used reasonable care in preparing the information included in this document, but Renesas does not warrant that such information is error free
nor does Renesas guarantee an exact match for every application or parameter to part numbers designated by other vendors listed herein. The information
provided in this document is intended solely to enable the use of Renesas products. No express or implied license to any intellectual property right is
granted by this document or in connection with the sale of Renesas products. Renesas reserves the right to make changes to specifications and product
descriptions at any time without notice. Renesas assumes no liability for any damages incurred by you resulting from errors in or omissions from the
information included herein. Renesas cannot verify, and assumes no liability for, the accuracy of information available on another company’s website.
Precautions
This Evaluation Kit is only intended for use in a laboratory environment under ambient temperature and humidity conditions. A safe separation distance
should be used between this and any sensitive equipment. Its use outside the laboratory, classroom, study area, or similar such area invalidates conformity
with the protection requirements of the Electromagnetic Compatibility Directive and could lead to prosecution.
The product generates, uses, and can radiate radio frequency energy and may cause harmful interference to radio communications. There is no guarantee
that interference will not occur in a particular installation. If this equipment causes harmful interference to radio or television reception, which can be
determined by turning the equipment off or on, you are encouraged to try to correct the interference by one or more of the following measures:
• Ensure attached cables do not lie across the equipment.
• Reorient the receiving antenna.
• Increase the distance between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that which the receiver is connected.
• Power down the equipment when not in use.
• Consult the dealer or an experienced radio/TV technician for help.
Note: It is recommended that wherever possible shielded interface cables are used.
The product is potentially susceptible to certain EMC phenomena. To mitigate against them it is recommended that the following measures be undertaken:
• The user is advised that mobile phones should not be used within 10 m of the product when in use.
• The user is advised to take ESD precautions when handling the equipment.
The Evaluation Kit does not represent an ideal reference design for an end product and does not fulfil the regulatory standards for an end product.

User’s Manual
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Renesas RA Family
EK-RA2L1 v1
Contents
1. Kit Overview ............................................................................................................................4
1.1 Assumptions and Advisory Notes............................................................................................................ 6
2. Kit Contents.............................................................................................................................7
3. Kit Ordering Information...........................................................................................................7
4. Hardware Architecture and Default Configuration....................................................................8
4.1 Kit Architecture........................................................................................................................................8
4.2 System Block Diagram..........................................................................................................................10
4.3 Jumper Settings.....................................................................................................................................11
4.3.1 Copper Jumpers..................................................................................................................................11
4.3.2 Traditional Pin Header Jumpers..........................................................................................................11
4.3.3 Default Jumper Configuration..............................................................................................................11
5. System Control and Ecosystem Access Area........................................................................13
5.1 Power ....................................................................................................................................................13
5.1.1 Power Supply Options.........................................................................................................................14
5.1.2 Power Supply Considerations.............................................................................................................14
5.1.3 Power-up Behavior..............................................................................................................................14
5.2 Debug and Trace...................................................................................................................................15
5.2.1 Debug On-Board .................................................................................................................................15
5.2.2 Debug In..............................................................................................................................................16
5.2.3 Debug Out ...........................................................................................................................................18
5.3 Ecosystem.............................................................................................................................................18
5.3.1 Seeed Grove®Connectors..................................................................................................................18
5.3.2 SparkFun®Qwiic®Connector..............................................................................................................19
5.3.3 Digilent Pmod™Connectors ...............................................................................................................19
5.3.4 Arduino™ Connector...........................................................................................................................21
5.3.5 MikroElektronika™ mikroBUS Connector ...........................................................................................23
5.4 Miscellaneous........................................................................................................................................23
5.4.1 User and Power LEDs.........................................................................................................................23
5.4.2 User and Reset Switches....................................................................................................................24
5.4.3 MCU Boot Mode..................................................................................................................................25
6. MCU Native Pin Access Area ................................................................................................26
6.1 Breakout Pin Headers ...........................................................................................................................26
6.2 MCU Current Measurement..................................................................................................................27

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6.3 MCU Internal Voltage Regulator ...........................................................................................................27
7. Certifications..........................................................................................................................29
7.1 EMC/EMI Standards..............................................................................................................................29
7.2 Material Selection, Waste, Recycling and Disposal Standards ............................................................29
7.3 Safety Standards...................................................................................................................................29
8. Design and Manufacturing Information ..................................................................................30
9. Website and Support.............................................................................................................30
Revision History............................................................................................................................31
Figures
Figure 1. EK-RA2L1 Board Top Side .............................................................................................................. 5
Figure 2. EK-RA2L1 Board Bottom Side......................................................................................................... 6
Figure 3. EK-RA2L1 Kit Contents..................................................................................................................... 7
Figure 4. EK-RA2L1 Board Functional Area Definitions.................................................................................. 9
Figure 5. EK-RA2L1 Board Block Diagram ................................................................................................... 10
Figure 6. Copper Jumpers............................................................................................................................. 11
Figure 7. System Control and Ecosystem Access Area................................................................................ 13
Figure 8. Power Supply Options.................................................................................................................... 14
Figure 9. EK-RA2L1 Debug Interface............................................................................................................ 16
Figure 10. Seeed Grove and Qwiic Connectors............................................................................................ 19
Figure 11. Pmod 1......................................................................................................................................... 20
Figure 12. Pmod 1 Trace Cut Jumpers ......................................................................................................... 20
Figure 13. Pmod 2......................................................................................................................................... 21
Figure 14. Arduino Uno Connectors.............................................................................................................. 22
Figure 15. mikroBUS Connection.................................................................................................................. 23
Figure 16. User LEDs.................................................................................................................................... 24
Figure 17. Power LED ................................................................................................................................... 24
Figure 18. Reset and User Switches............................................................................................................. 25
Figure 19. Boot Mode.................................................................................................................................... 25
Figure 20. Native Pin Access Area................................................................................................................ 26
Figure 21. RA +3.3 V Current Measurement Circuit...................................................................................... 27
Figure 22. RA MCU Current Measurement................................................................................................... 27
Figure 23. RA MCU Internal Regulator Circuit .............................................................................................. 27
Tables
Table 1. Default Jumper Settings ................................................................................................................ 11
Table 2. Debug Modes ................................................................................................................................ 15

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Table 3. Jumper Connection Summary for Different Debug Modes ........................................................... 15
Table 4. Debug USB Connector.................................................................................................................. 15
Table 5. Debug On-Board Jumper Configuration........................................................................................ 16
Table 6. Debug In Mode Jumper Configuration .......................................................................................... 16
Table 7. JTAG/SWD/TRACE Connector..................................................................................................... 17
Table 8. JTAG/SWD Connector .................................................................................................................. 17
Table 9. Debug Out Jumper Configuration.................................................................................................. 18
Table 10. Grove 1 Connector..................................................................................................................... 18
Table 11. Grove 2 Connector..................................................................................................................... 18
Table 12. Qwiic Connector......................................................................................................................... 19
Table 13. Pmod 1 Connector..................................................................................................................... 19
Table 14. Pmod 2 Connector..................................................................................................................... 21
Table 15. Arduino Uno Connections.......................................................................................................... 21
Table 16. mikroBUS Connections.............................................................................................................. 23
Table 17. EK-RA2L1 Board LED Functions............................................................................................... 23
Table 18. EK-RA2L1 Board Switches........................................................................................................ 24
Table 19. EK-RA2L1 Internal Regulator Settings ...................................................................................... 28
Table 20. EK-RA2L1 Board Design Package Contents............................................................................. 30

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1. Kit Overview
The EK-RA2L1, an Evaluation Kit for RA2L1 MCU Group, enables users to seamlessly evaluate the features
of the RA2L1 MCU group and develop embedded systems applications using Flexible Software Package
(FSP) and e2studio IDE. The users can utilize rich on-board features along with their choice of popular
ecosystems add-ons to bring their big ideas to life.
The key features of the EK-RA2L1 board are categorized in the following groups (consistent with the
architecture of the kit) as follows:
MCU Native Pin Access
•R7FA2L1AB2DFP MCU (referred to as RA MCU)
•48 MHz, Arm®Cortex®-M23 core
•256 kB Code Flash, 32 kB SRAM
•100 pins, LQFP package
•Native pin access through 1 x 40-pin and 3 x 20-pin male headers
•MCU current measurement points for precision current consumption measurement
•Multiple clock sources – Low-precision clocks are available internal to the RA MCU. Additionally, RA
MCU oscillator and sub-clock oscillator crystals, 20.000 MHz and 32,768 Hz, are provided for precision
•Internal MCU DC-DC power option
System Control and Ecosystem Access
•Two 5 V input sources
USB (Debug)
External power supply (using surface mount clamp test points and power input vias)
•Three Debug modes
Debug on-board (SWD)
Debug in (ETM, SWD, and JTAG)
Debug out (SWD)
•User LEDs and buttons
Three User LEDs (red, blue, green)
Power LED (white) indicating availability of regulated power
Debug LED (yellow) indicating the debug connection
Two User buttons
One Reset button
•Five most popular ecosystems expansions
2 Seeed Grove®system (I2C/Analog) connectors
SparkFun®Qwiic®connector
2 Digilent PmodTM (SPI and UART) connectors
ArduinoTM (Uno R3) connector
MikroElektronikaTM mikroBUS connector
•MCU boot configuration jumper

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Figure 1. EK-RA2L1 Board Top Side

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Figure 2. EK-RA2L1 Board Bottom Side
1.1 Assumptions and Advisory Notes
1. It is assumed that the user has basic understanding of microcontrollers and embedded systems
hardware.
2. It is recommended that the user refers to the EK-RA2L1 Quick Start Guide to get acquainted with the kit
and the Quick Start example project that EK-RA2L1 board comes pre-programmed with.
3. Flexible Software Package (FSP) and Integrated Development Environment (IDE) such as e2studio are
required to develop embedded applications on EK-RA2L1 kit.
4. Instructions to download and install software, import example projects, build them and program the
EK-RA2L1 board are provided in the quick start guide.

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2. Kit Contents
The following components are included in the kit:
1. EK-RA2L1 v1 board
2. Micro USB device cable (type-A male to micro-B male)
Figure 3. EK-RA2L1 Kit Contents
3. Kit Ordering Information
•EK-RA2L1 v1 kit orderable part number: RTK7EKA2L1S00001BE
Note: The underlined character in the orderable part number represents the kit version.
•EK-RA2L1 board dimensions: 80 mm (width) x 140 mm (length)

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4. Hardware Architecture and Default Configuration
4.1 Kit Architecture
The EK-RA2L1 board is designed with two of three sections or areas to help shorten the learning curve of
the users and maximize the design and knowledge reuse among similar kits. The contents of these three
areas are conceptually standardized among similar kits.
Kit area
Area features
Area present on all
similar kits
Functionality is:
MCU Native Pin
Access Area
RA MCU, breakout pin headers
for all MCU I/O and power,
current measurement
Yes
MCU dependent
Special Feature
Access Area (not
present on EK-
RA2L1)
MCU special features: None
Optional
MCU dependent
System Control
and Ecosystem
Access Area
Power, Debug MCU, User LED
and buttons, reset, ecosystem
connectors, USB Full Speed
Host and Device, Boot
configuration
Yes
Same or similar across
similar kits

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Figure 4. EK-RA2L1 Board Functional Area Definitions

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4.2 System Block Diagram
Figure 5. EK-RA2L1 Board Block Diagram
LEDs
Voltage/
Current
Probes
Us er
Buttons
J-Link OB +
Debug + ETM
10 pin and
20 pin
Us er
Programmable Status Power Pmod x2
Grove x2Qwiic
MikroBus Arduino
Uno
Debug
I/F
GPIO Power
Delivery
SPI/
UART/
I2C
Analogue
/IRQ/IO
Reset
Switch
Power
Meas.
Jumper
EK-RA2L1 MCU Board
System Control &
Ecosystem Access
Native Pin Access
I2C

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4.3 Jumper Settings
Two types of jumpers are provided on the EK-RA2L1 board.
1. Copper jumpers (trace-cut type and solder bridge type)
2. Traditional pin header jumpers
The following sections describe each type and their default configuration.
4.3.1 Copper Jumpers
Copper jumpers are of two types, designated trace-cut and solder-bridge.
A trace-cut jumper is provided with a narrow copper trace connecting its pads. The silk screen overlay
printing around a trace-cut jumper is a solid box. To isolate the pads, cut the trace between pads adjacent to
each pad, then remove the connecting copper foil either mechanically or with the assistance of heat. Once
the etched copper trace is removed, the trace-cut jumper is turned into a solder-bridge jumper for any later
changes.
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.)
Figure 6. Copper 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-RA2L1 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-RA2L1 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
Default Open/Closed
Function
J6
J-Link OB
Closed
Configures J-Link OB connection to MCU mode
J8
J-Link OB
Jumper on pins 1-2
Configures the MCU for normal operation
J9
J-Link OB
Open
Configures Reset# for on-board debugger mode
J29
J-Link OB
Jumper on pins 1-2
Jumper on pins 3-4
Jumper on pins 5-6
Jumper on pins 7-8
Connects the J-Link OB debugger to the RA
MCU

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Location
Circuit Group
Default Open/Closed
Function
J16
MCU Boot Mode
Open
Configures the MCU for normal boot mode
E3
MCU Power
Closed
Connects AVCC0 to +3.3 V
E4
MCU Power
Closed
Connects AVSS0 to GND
E5
MCU Power
Closed
Connects P011/VREFL0 to GND
E6
MCU Power
Closed
Connects P010/VREFH0 to +3.3 V
E7
MCU Clock
Open
Connects P212/EXTAL to 20 MHz crystal
E11
MCU Clock
Open
Connects P213/XTAL to 20 MHz crystal
E13
MCU Clock
Closed
Connects P212/EXTAL pin to pin headers
E12
MCU Clock
Closed
Connects P213/XTAL pin to pin headers
E9
MCU Clock
Open
Connects P215/XCIN to 32 kHz crystal
E10
MCU Clock
Open
Connects P214/XCOUT to 32 kHz crystal
E1
MCU Clock
Closed
Connects P214/XCOUT to pin headers
E8
MCU Clock
Closed
Connects P215/XCIN to pin headers
E27
User LED
Closed
Connects P503 to User LED1
E26
User LED
Closed
Connects P504 to User LED2
E28
User LED
Closed
Connects P505 to User LED3
E29
Debug MCU
Power
Closed
Connects the Debug MCU power to +3.3 V
E30
JTAG
Closed
Connects the JTAG GND Detect pin on J20 and
J13 to GND
E31
User Switch
Closed
Connects P004 to User Switch S1
E32
User Switch
Closed
Connects P015 to User Switch S2
E2
MCU Internal
Regulator Power
Open
Connects VSS_DCDC to GND
E14
MCU Internal
Regulator Power
Open
Connects VLO to power inductor
E15
MCU Internal
Regulator Power
Open
Connects VCC_DCDC to +3.3 V
E20
Pmod 1
Closed
Connects P100 (MISOA/RXD0) to Pmod 1
E21
Pmod 1
Closed
Connects P102 (RSPCKA/SCK0) to Pmod 1
E16
Pmod 1
Closed
Connects +3.3 V to Pmod 1
E18
Pmod 1
Open
Connects P301 (SCL2) to Pmod 1
E19
Pmod 1
Open
Connects P302 (SDA2) to Pmod 1
E17
Pmod 1
Open
Connects +5.0V to Pmod 1

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5. System Control and Ecosystem Access Area
The following figure shows the System Control and Ecosystem Access area on the EK-RA2L1 board.
Subsequent sections detail the features and functionality provided in the area.
Figure 7. System Control and Ecosystem Access Area
5.1 Power
The EK-RA2L1 kit is designed for +5 V operation. An on-board Low Dropout Regulator (LDO) is used to
convert the 5 V supply to a 3.3 V supply. The 3.3 V supply is used to power the RA MCU and other
peripheral features.

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5.1.1 Power Supply Options
This section describes the different ways in which EK-RA2L1 kit can be powered.
Figure 8. Power Supply Options
5.1.1.1 Option 1: Debug USB
5 V may be supplied from an external USB host to the USB Debug connector (J10) labelled DEBUG on the
board. Power from this source is connected to the Main System 5 V Power. Reverse current protection is
provided between this connector and the Main System 5 V Power.
5.1.1.2 Option 2: 5 V Test Points
5 V may be supplied from an external power supply to test points on the board. TP7 (5 V) and TP9 (GND)
are loop-style test points, and TP5 (5 V) and TP6 (GND) are large via style test points. The two types of test
points are electrically equivalent, and both are provided for user convenience. Power from this source is
connected to the Main System 5 V Power. Reverse current protection is provided between the 5 V test points
and the Main System 5 V Power.
5.1.2 Power Supply Considerations
The on-board LDO regulator which supplies +3.3 V has a built-in current limit of 2.0 A. Make sure the total
current required by the RA MCU, any active on-board features, and any connected peripheral devices does
not exceed this limit.
Note: The total current available from a typical USB host is 500 mA maximum. Depending on the
configuration of the kit, multiple power sources may be required.
5.1.3 Power-up Behavior
When powered, the white LED near the center of the board (the “dash” in the EK-RA2L1 name) will light up.
For more details on initial power up behavior, see the EK-RA2L1 Quick Start Guide.
5 V to 3.3 V
Volta ge
Regulator
Option 1:
Debug USB
(J10)
3.3 V Voltage
Measurement:
TP8 and TP10
MCU Current
Measurement
(R3) TP1 and TP3
Main System
3.3 V Power
RA
MCU
Main
Power
Main System
5 V Pow e r
Option 2a:
TP5 and TP6
Option 2b:
TP7 and TP9

Renesas RA Family EK-RA2L1 v1 – User's Manual
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5.2 Debug and Trace
The EK-RA2L1 board supports the following three debug modes.
Table 2. Debug Modes
Debug
Modes
Debug MCU
(one that connects
to the IDE on PC)
Target MCU
(one that is being
debugged)
Debugging
Interface/Protocol
Connector Used
Debug on-
board
S124 (on-board)
RA2L1 (on-board)
SWD
Micro USB (J10)
Debug in
External debugging
tools
RA2L1 (on-board)
SWD, ETM, JTAG
20-pin connector (J20)
or 10-pin connector (J13)
Debug out
S124 (on-board)
Any external RA
MCU
SWD
Micro USB (J10) plus
either 20-pin connector
(J20)
or 10-pin connector (J13)
Notes:
•See Table 4 for the Debug USB connector pin definition.
•See Table 7 for the 20-pin JTAG connector pin definition.
•See Table 8 for the 10-pin JTAG connector pin definition.
The following table summarizes the jumper setting for each of the debug modes.
Table 3. Jumper Connection Summary for Different Debug Modes
Debug Modes
J6
J8
J9
J29
Debug on-board
Closed
Jumper on pins 1-2
Open
Jumpers on pins 1-2, 3-4, 5-6, 7-8
Debug in
Closed
Jumper on pins 1-2
Closed
Jumpers on pins 1-2, 3-4, 5-6, 7-8
Debug out
Open
Jumper on pins 2-3
Open
All pins open
5.2.1 Debug On-Board
The on-board debug functionality is provided using Renesas S124 Debug MCU and SEGGER J-Link®
firmware. Debug USB Micro-B connector (J10) connects the S124 Debug MCU to an external USB Full
Speed Host, allowing re-programming and debugging of the target RA MCU firmware. This connection is the
default debug mode for the EK-RA2L1 board.
The S124 Debug MCU connects to the target RA MCU using the SWD interface.
Table 4. Debug USB Connector
Debug USB Connector
EK-RA2L1
Pin
Description
Signal/Bus
J10-1
+5VDC
+5V_USB_DBG
J10-2
Data-
USB_DM (U7-12)
J10-3
Data+
USB_DP (U7-13)
J10-4
USB ID, jack internal switch, cable inserted
N.C.
J10-5
Ground
GND
A yellow indicator, LED5, shows the visual status of the debug interface. When the EK-RA2L1 board is
powered on, and LED5 is blinking, it indicates that the S124 Debug MCU is not connected to a programming
host. When LED5 is on solid, it indicates that the S124 Debug MCU is connected to a programming
interface.

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To configure the EK-RA2L1 board to use the Debug On-Board mode, configure the jumpers using the
following table.
Table 5. Debug On-Board Jumper Configuration
Location
Default Open/Closed
Function
J6
Closed
Target RA MCU MD connected to debug
J8
Jumper on pins 1-2
Target RA MCU RESET# connected to debug RESET#
J9
Open
S124 Debug MCU in normal operation mode
J29
Jumpers on pins 1-2, 3-4, 5-6, 7-8
Target RA MCU debug signals connected to the Debug
Interface
Figure 9. EK-RA2L1 Debug Interface
5.2.2 Debug In
One 20-pin Cortex®Debug Connector at J20 supports JTAG, SWD and ETM (TRACE) debug. One 10-pin
Cortex®Debug Connector at J13 supports JTAG and SWD. Either of these connectors may be used for
external debug of the target RA MCU.
To configure the EK-RA2L1 board to use the Debug In mode, configure the jumpers using the following
table.
Table 6. Debug In Mode Jumper Configuration
Location
Default Open/Closed
Function
J6
Closed
Target RA MCU MD connected to debug
J8
Jumper on pins 1-2
Target RA MCU RESET# connected to debug RESET#
J9
Closed
S124 Debug MCU is held in RESET
J29
Jumpers on pins 1-2, 3-4, 5-6, 7-8
Target RA MCU debug signals connected to the Debug Interface