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Overview

boards/renesas/ek_ra4l1/doc/index.rst

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.. zephyr:board:: ek_ra4l1

Overview

The Renesas RA4L1 group of 32-bit microcontrollers (MCUs) uses the high-performance Arm Cortex®-M33 core. Share a common set of Renesas peripherals to facilitate design scalability and efficient platform-based product development.

The MCU in this series incorporates a high-performance Arm Cortex®-M33 core running up to 80 MHz with the following features:

MCU Native Pin Access

  • R7FA4L1BD4CFP MCU (referred to as RA MCU)
  • 80 MHz, Arm® Cortex®-M33 core
  • 512 KB Code Flash, 64 KB SRAM
  • 100-pin LQFP package

System Control and Ecosystem Access

  • USB Full Speed Host and Device (USB-C connector)

  • Three 5 V input sources

    • USB (Debug, Full Speed)
    • External power supply (using surface mount clamp test points and power input vias)

  • Three Debug modes

    • Debug on-board (SWD)
    • Debug in (SWD)
    • Debug out (SWD, SW0 and JTAG)

  • 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

    • 1 Seeed Grove® system (I3C) connector
    • 1 Seeed Grove® system (I2C/Analog) connector
    • 2 Digilent PmodTM (SPI, UART and I2C) connectors
    • ArduinoTM (Uno R3) connector
    • MikroElektronikaTM mikroBUS connector

  • MCU boot configuration jumper

Special Feature Access

  • 256 Mb (32 MB) External QUAD-SPI Flash
  • CAN FD (3-pin header)
  • Segment LCD Board Interface (50-pin header)

Hardware

Detailed hardware features can be found at:

  • RA4L1 MCU: RA4L1 Group User's Manual Hardware_
  • EK-RA4L1 board: EK-RA4L1 - User's Manual_

Debug on-board:

  • Connector Used: USB-C (J10)

+----------------+------+------+--------------------+------+--------------------------------------+ | Debug Modes | J6 | J6-A | J8 | J9 | J29 | +================+======+======+====================+======+======================================+ | Debug on-board | Open | Open | Jumper on pins 1-2 | Open | Jumpers on pins 1-2, 3-4, 5-6, 7-8 | +----------------+------+------+--------------------+------+--------------------------------------+

Supported Features

.. zephyr:board-supported-hw::

Programming and Debugging

.. zephyr:board-supported-runners::

Applications for the ek_ra4l1 board configuration can be built, flashed, and debugged in the usual way. See :ref:build_an_application and :ref:application_run for more details on building and running.

Flashing

Program can be flashed to EK-RA4L1 via the on-board SEGGER J-Link debugger. SEGGER J-link's drivers are available at https://www.segger.com/downloads/jlink/

To flash the program to board

  1. Connect to J-Link OB via USB port to host PC

  2. Make sure J-Link OB jumper is in default configuration as describe in EK-RA4L1 - User's Manual_

  3. Execute west command

.. code-block:: console

west flash -r jlink

References

  • EK-RA4L1 Website_
  • RA4L1 MCU group Website_

.. _EK-RA4L1 Website: https://www.renesas.com/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/ek-ra4l1-evaluation-kit-ra4l1-mcu-group

.. _RA4L1 MCU group Website: https://www.renesas.com/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/ra4l1-80mhz-arm-cortex-m33-based-low-power-mcu-trustzone-segment-lcd-controller-and-advanced-security

.. _EK-RA4L1 - User's Manual: https://www.renesas.com/en/document/mat/ek-ra4l1-v1-users-manual?r=25570359

.. _RA4L1 Group User's Manual Hardware: https://www.renesas.com/en/document/mah/ra4l1-group-users-manual-hardware?r=25568281