RA4E2 Evaluation Kit
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)
EK-RA4E2 Board Functional Area Definitions (Credit: Renesas Electronics Corporation)
Hardware
Detail Hardware feature for the RA4E2 MCU group can be found at RA4E2 Group User’s Manual Hardware
RA4E2 Block diagram (Credit: Renesas Electronics Corporation)
Detail Hardware feature for the EK-RA4E2 MCU can be found at EK-RA4E2 - User’s Manual
Supported Features
The below features are currently supported on Zephyr OS for EK-RA4E2 board:
Interface |
Controller |
Driver/Component |
|---|---|---|
GPIO |
on-chip |
gpio |
MPU |
on-chip |
arch/arm |
NVIC |
on-chip |
arch/arm |
UART |
on-chip |
serial |
CLOCK |
on-chip |
clock control |
Other hardware features are currently not supported by the port.
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 avaialbe 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-RA4E2 - 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: 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