RA4M1 Evaluation Kit
Overview
The MCU integrates multiple series of software- and pin-compatible Arm®-based 32-bit cores that share a common set of Renesas peripherals to facilitate design scalability and efficient platform-based product development. The MCU provides an optimal combination of low-power, high-performance Arm Cortex®-M4 core running up to 48 MHz with the following features:
Renesas RA4M1 Microcontroller Group
R7FA4M1AB3CFP
100-pin LQFP package
48 MHz Arm® Cortex®-M4 core with Floating Point Unit (FPU)
32 KB SRAM
256 KB code flash memory
8 KB data flash memory
Connectivity
A Device USB connector for the Main MCU
SEGGER J-Link® On-Board (OB) interface for debugging and programming of the RA4M1 MCU. A 10pin JTAG/SWD interface is also provided for connecting optional external debuggers and programmers.
Two PMOD connectors, allowing use of appropriate PMOD compliant peripheral plug-in modules for rapid prototyping
Pin headers for access to power and signals for the Main MCU
Multiple clock sources
Main MCU oscillator crystals, providing precision 12.000 MHz and 32,768 Hz external reference clocks
Additional low-precision clocks are available internal to the Main MCU
General purpose I/O ports
One jumper to allow measuring of Main MCU current
Copper jumpers on PCB bottom side for configuration and access to selected MCU signals
Operating voltage
External 5 V input through the Debug USB connector supplies the on-board power regulator to power logic and interfaces on the board. External 5 V or 3.3 V may be also supplied through alternate locations on the board.
A two-color board status LED indicating availability of regulated power and connection status of the J-Link interface.
A red User LED, controlled by the Main MCU firmware
A User Push-Button switch, User Capacitive Touch Button sensor, and an optional User Potentiometer, all of which are controlled by the Main MCU firmware
MCU reset push-button switch
MCU boot configuration jumper
Hardware
Detailed hardware features can be found at:
RA4M1 MCU: RA4M1 Group User’s Manual Hardware
EK-RA4M1 board: EK-RA4M1 - User’s Manual
Supported Features
The ek_ra4m1 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_ra4m1/r7fa4m1ab3cfp target
Type |
Location |
Description |
Compatible |
|---|---|---|---|
CPU |
on-chip |
ARM Cortex-M4 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 Clock1 |
||
on-chip |
Renesas RA Clock Control node pclk block1 |
||
on-chip |
|||
Counter |
on-chip |
Renesas RA AGT as Counter2 |
|
DAC |
on-chip |
Renesas RA DAC Controller Global1 |
|
on-chip |
Renesas RA DAC Controller1 |
||
GPIO & Headers |
on-chip |
||
I2C |
on-chip |
||
Input |
on-board |
Group of GPIO-bound input keys1 |
|
Interrupt controller |
on-chip |
ARMv7-M NVIC (Nested Vectored Interrupt Controller)1 |
|
LED |
on-board |
Group of GPIO-controlled LEDs1 |
|
Miscellaneous |
on-chip |
||
on-chip |
Renesas RA AGT2 |
||
on-chip |
|||
MMU / MPU |
on-chip |
ARMv7-M Memory Protection Unit (MPU)1 |
|
MTD |
on-chip |
Flash node1 |
|
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 SCE5 TRNG1 |
|
Serial controller |
on-chip |
||
SPI |
on-chip |
||
SRAM |
on-chip |
Generic on-chip SRAM description1 |
|
Timer |
on-chip |
ARMv7-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_ra4m1 board 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-RA4M1 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-RA4M1 - 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: R7FA4M1AB
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