RA4M2 Evaluation Kit
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
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
The ek_ra4m2 board supports the hardware features listed below.
- on-chip / on-board
- Feature integrated in the SoC / present on the board.
- 2 / 2
-
Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files. -
vnd,foo -
Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.
ek_ra4m2/r7fa4m2ad3cfp target
Type |
Location |
Description |
Compatible |
|---|---|---|---|
CPU |
on-chip |
ARM Cortex-M33 CPU1 |
|
ADC |
on-chip |
Renesas RA ADC node1 |
|
Clock control |
on-chip |
Renesas RA Clock Generation Circuit external clock configuration1 |
|
on-chip |
Generic fixed-rate clock provider3 |
||
on-chip |
Renesas RA Sub-Clock1 |
||
on-chip |
Renesas RA Clock Generation Circuit PLL Clock2 |
||
on-chip |
Renesas RA Clock Control node pclk block1 |
||
on-chip |
|||
Counter |
on-chip |
Renesas RA AGT as Counter6 |
|
DAC |
on-chip |
Renesas RA DAC Controller Global1 |
|
on-chip |
|||
Flash controller |
on-chip |
Renesas RA family flash high-performance controller1 |
|
GPIO & Headers |
on-chip |
||
I2C |
on-chip |
||
Input |
on-board |
Group of GPIO-bound input keys1 |
|
Interrupt controller |
on-chip |
ARMv8-M NVIC (Nested Vectored Interrupt Controller)1 |
|
LED |
on-board |
Group of GPIO-controlled LEDs1 |
|
Miscellaneous |
on-chip |
||
on-chip |
Renesas RA AGT6 |
||
on-chip |
|||
MMU / MPU |
on-chip |
ARMv8-M MPU (Memory Protection Unit)1 |
|
MTD |
on-chip |
Flash memory binding of Renesas RA family2 |
|
on-board |
Fixed partitions of a flash (or other non-volatile storage) memory1 |
||
PHY |
on-chip |
This binding is to be used by all the usb transceivers which are built-in with USB IP1 |
|
Pin control |
on-chip |
The Renesas RA pin controller is a node responsible for controlling pin function selection and pin properties, such as routing a SCI0 RXD to P6101 |
|
PWM |
on-chip |
||
RNG |
on-chip |
Renesas RA SCE9 TRNG1 |
|
Serial controller |
on-chip |
||
SPI |
on-chip |
Renesas RA SPI controller1 |
|
SRAM |
on-chip |
Generic on-chip SRAM description1 |
|
Timer |
on-chip |
ARMv8-M System Tick1 |
|
USB |
on-chip |
Renesas RA USB full-speed controller1 |
|
on-chip |
Renesas RA USB device controller1 |
||
Watchdog |
on-chip |
Renesas RA Watchdog (wdt)1 |
Programming and Debugging
Applications for the ek_ra4m2 board target configuration can be
built, flashed, and debugged in the usual way. See
Building an Application and Run an Application 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
Connect to J-Link OB via USB port to host PC
Make sure J-Link OB jumper is in default configuration as describe in EK-RA4M2 - User’s Manual
Execute west command
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