RA4E2 Evaluation Kit

Board Overview

RA4E2 Evaluation Kit

Name:

ek_ra4e2

Vendor:

Renesas Electronics Corporation

Architecture:

arm

SoC:

r7fa4e2b93cfm

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Overview

The RA4E2 Group delivers up to 100 MHz of CPU performance using an Arm® Cortex®-M33 core with 128 KB of code flash memory, 4 KB of data flash memory, and 40 KB of SRAM. RA4E2 MCUs offer high-performance and optimized peripheral functions along with the smallest package options, including space-saving 36-pin BGA and 32-pin QFN packages. The RA4E2 Group offers a wide set of peripherals, including USB Full Speed, CANFD, I3C, and ADC.

The MCU in this series incorporates a high-performance Arm Cortex®-M33 core running up to 100 MHz with the following features:

MCU Native Pin Access

• R7FA4E2B93CFM MCU (referred to as RA MCU)

• 100 MHz, Arm® Cortex®-M33 core

• 128 kB Code Flash, 40 kB SRAM

• 64 pins, LQFP package

• Native pin access through 2 x 14-pin and 1 x 40-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 20.000 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 Device (micro-AB connector)

• Three 5 V input sources

  • USB (Debug, Full Speed)

  • External power supply (using surface mount clamp test points and J31 through holes)

• Three Debug modes

  • Debug on-board (SWD)

  • Debug in (SWD)

  • Debug out (JTAG, 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 (I3C/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

• CAN FD (3-pin header)

Hardware

Detailed hardware features for the RA4E2 MCU group can be found at RA4E2 Group User’s Manual Hardware

RA4E2 Block diagram (Credit: Renesas Electronics Corporation)

Detailed hardware features for the EK-RA4E2 MCU can be found at EK-RA4E2 - User’s Manual

Supported Features

The ek_ra4e2 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_ra4e2/r7fa4e2b93cfm target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M33 CPU1	arm,cortex-m33
ADC	on-chip	Renesas RA ADC node1	renesas,ra-adc
CAN	on-chip	Renesas RA CANFD controller global1	renesas,ra-canfd-global
	on-chip	Renesas RA CANFD controller1	renesas,ra-canfd
Clock control	on-chip	Renesas RA Clock Generation Circuit external clock configuration1	renesas,ra-cgc-external-clock
	on-chip	Generic fixed-rate clock provider3	fixed-clock
	on-chip	Renesas RA Sub-Clock1	renesas,ra-cgc-subclk
	on-chip	Renesas RA Clock Generation Circuit PLL Clock1	renesas,ra-cgc-pll
	on-chip	Renesas RA Clock Control node pclk block1	renesas,ra-cgc-pclk-block
	on-chip	Renesas RA Clock Control Peripheral Clock7 4	renesas,ra-cgc-pclk
DAC	on-chip	Renesas RA DAC Controller Global1	renesas,ra-dac-global
	on-chip	Renesas RA DAC Controller1	renesas,ra-dac
Flash controller	on-chip	Renesas RA family flash high-performance controller1	renesas,ra-flash-hp-controller
GPIO & Headers	on-chip	Renesas RA GPIO I/O Port5 2	renesas,ra-gpio-ioport
Input	on-board	Group of GPIO-bound input keys1	gpio-keys
Interrupt controller	on-chip	ARMv8-M NVIC (Nested Vectored Interrupt Controller)1	arm,v8m-nvic
LED	on-board	Group of GPIO-controlled LEDs1	gpio-leds
Miscellaneous	on-chip	Renesas RA SCI controller1 1	renesas,ra-sci
	on-chip	Renesas RA External Interrupt2 14	renesas,ra-external-interrupt
MMU / MPU	on-chip	ARMv8-M MPU (Memory Protection Unit)1	arm,armv8m-mpu
MTD	on-chip	Flash memory binding of Renesas RA family2	renesas,ra-nv-flash
	on-board	Fixed partitions of a flash (or other non-volatile storage) memory1	fixed-partitions
PHY	on-board	Simple GPIO controlled CAN transceiver1	can-transceiver-gpio
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	renesas,ra-pinctrl-pfs
PWM	on-chip	Renesas RA Pulse Width Modulation1 3	renesas,ra-pwm
RNG	on-chip	Renesas RA TRNG1	renesas,ra-trng
Serial controller	on-chip	Renesas RA SCI UART controller1 1	renesas,ra-sci-uart
SPI	on-chip	Renesas RA SPI controller1 1	renesas,ra-spi
SRAM	on-chip	Generic on-chip SRAM description1	mmio-sram
Timer	on-chip	ARMv8-M System Tick1	arm,armv8m-systick
Watchdog	on-chip	Renesas RA Watchdog (wdt)1	renesas,ra-wdt

Programming and Debugging

Applications for the ek_ra4e2 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-RA4E2 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-RA4E2 - User’s Manual

3. 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: R7FA4E2B9

• 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-RA4E2 Website

• RA4E2 MCU group Website