| .. zephyr:board:: ek_ra4m2 |
| |
| Overview |
| ******** |
| |
| The Renesas RA4M2 group of 32-bit microcontrollers (MCUs) uses the high-performance Arm |
| Cortex®-M33 core. In concert with the secure crypto engine, it offers secure element |
| functionality. The RA4M2 is built on a highly efficient 40nm process, built on FreeRTOS—and |
| is expandable to use other RTOSes and middleware. The RA4M2 is suitable for IoT applications |
| requiring vast communication options, future proof security, large embedded RAM, and low |
| active power consumption down to 81µA/MHz running the CoreMark® algorithm from Flash. |
| |
| The MCU in this series incorporates a high-performance Arm Cortex®-M33 core running up to |
| 100 MHz with the following features: |
| |
| **Renesas RA4M2 Microcontroller Group** |
| |
| - R7FA4M2AD3CFP |
| - 100-pin LQFP package |
| - 100 MHz Arm® Cortex®-M33 core |
| - 512 kB Code Flash, 128 KB SRAM |
| - Native pin access through 4 x 28-pin male headers |
| - MCU current measurement points for precision current consumption measurement |
| - Multiple clock sources - RA MCU oscillator and sub-clock oscillator crystals, providing |
| precision 24.000 MHz and 32,768 Hz reference clock. Additional low-precision clocks are |
| available internal to the RA MCU |
| |
| **System Control and Ecosystem Access** |
| |
| - USB Full Speed Host and Device (micro AB 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 (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 |
| |
| **Special Feature Access** |
| |
| - 32 MB (256 Mb) External Quad-SPI Flash |
| |
| Hardware |
| ******** |
| Detailed hardware features for the RA4M2 MCU group can be found at `RA4M2 Group User's Manual Hardware`_ |
| |
| .. figure:: ra4m2_block_diagram.webp |
| :width: 442px |
| :align: center |
| :alt: RA4M2 MCU group feature |
| |
| RA4M2 Block diagram (Credit: Renesas Electronics Corporation) |
| |
| Detailed hardware features for the EK-RA4M2 MCU can be found at `EK-RA4M2 - User's Manual`_ |
| |
| Supported Features |
| ================== |
| |
| .. zephyr:board-supported-hw:: |
| |
| Programming and Debugging |
| ************************* |
| |
| .. zephyr:board-supported-runners:: |
| |
| Applications for the ``ek_ra4m2`` board target 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-RA4M2 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-RA4M2 - User's Manual`_ |
| |
| 3. Execute west command |
| |
| .. code-block:: console |
| |
| west flash -r jlink |
| |
| Debugging |
| ========= |
| |
| You can use Segger Ozone (`Segger Ozone Download`_) for a visual debug interface |
| |
| Once downloaded and installed, open Segger Ozone and configure the debug project |
| like so: |
| |
| * Target Device: R7FA4M2AD |
| * Target Interface: SWD |
| * Target Interface Speed: 4 MHz |
| * Host Interface: USB |
| * Program File: <path/to/your/build/zephyr.elf> |
| |
| **Note:** It's verified that we can debug OK on Segger Ozone v3.30d so please use this or later |
| version of Segger Ozone |
| |
| References |
| ********** |
| - `EK-RA4M2 Website`_ |
| - `RA4M2 MCU group Website`_ |
| |
| .. _EK-RA4M2 Website: |
| https://www.renesas.com/us/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/ek-ra4m2-evaluation-kit-ra4m2-mcu-group |
| |
| .. _RA4M2 MCU group Website: |
| https://www.renesas.com/us/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/ra4m2-100mhz-arm-cortex-m33-trustzone-high-integration-lowest-active-power-consumption |
| |
| .. _EK-RA4M2 - User's Manual: |
| https://www.renesas.com/us/en/document/mat/ek-ra4m2-v1-users-manual |
| |
| .. _RA4M2 Group User's Manual Hardware: |
| https://www.renesas.com/us/en/document/man/ra4m2-group-users-manual-hardware |
| |
| .. _Segger Ozone Download: |
| https://www.segger.com/downloads/jlink#Ozone |
