Waveshare R7FA4 PLUS A Development Board

Waveshare R7FA4 PLUS A Development Board is a compact Renesas RA4M1 development board built around the R7FA4M1AB3CFM microcontroller. It delivers the familiar Arduino UNO R4 Minima compatible form factor while adding a more flexible power design, CAN bus, 12-bit DAC, onboard operational amplifiers, and broader shield expansion capability for embedded control, industrial interface experiments, education, and rapid prototyping.

This R7FA4 PLUS A board runs at 48MHz and integrates 256KB Flash plus 32KB RAM, giving developers a practical Renesas platform for learning, testing, and deploying control logic. With 5V / 3.3V selectable output, 6V to 24V DC input, standard Arduino headers, ICSP, SWD indicators, and a side reset button, the board is well suited for sensor expansion, actuator control, shield stacking, and mixed-voltage prototyping.

Features

• Renesas R7FA4M1AB3CFM / RA4M1 MCU with 32-bit Arm Cortex-M4 architecture and 48MHz clock
• Arduino UNO R4 Minima compatible layout for easier code migration and shield expansion
• 256KB Flash and 32KB RAM for embedded control, automation logic, and interface experiments
• Selectable 5V or 3.3V power output for better compatibility with different modules and shields
• 6V to 24V DC input for more flexible external power design
• 12-bit DAC, CAN bus, PWM, ADC, UART, I2C, and SPI on one board
• Low-profile DC jack and side reset button help keep shield stacking more convenient
• Up to 2000mA 5V output capability for stronger peripheral driving in lab and prototype setups
• Experimental solder pad area for DIY interfaces and quick hardware expansion

Specifications

Applications

• Embedded control development for logic control, timing, and interface testing
• Industrial communication learning with CAN bus based experiments and controller training
• Sensor and actuator prototyping with Arduino-compatible shields and module stacks
• Education and STEM projects for Renesas RA4M1 programming and Arduino migration
• Mixed-voltage prototyping where 5V and 3.3V peripheral compatibility matters
• DIY hardware validation using the experimental solder pad area for custom interfaces

Packing List

• R7FA4 PLUS A x1
• USB Type-A to Type-C cable x1

Other Content

Board hardware overview

The R7FA4 PLUS A board includes the R7FA4M1AB3CFM MCU, AMS1117-3.3 regulator, MP8759 5V regulator, Arduino interface, ICSP header, configurable 5V / 3.3V power output header, SWD indicator, power indicator, user LED, USB Type-C programming interface, serial RX/TX indicators, DC input, and reset button.

Pinout definition

Outline dimensions

Shield and module expansion is one of the strongest points of this Waveshare development board. The Arduino-compatible interface, low-profile DC jack, side reset key, and configurable voltage output make the R7FA4 PLUS A easier to integrate with sensor modules, display shields, relay shields, and custom experiment boards during development.

Resources

• Wiki
• Schematic
• Renesas RA4M1 Overview
• RA4M1 Hardware Manual
• Arduino UNO R4 Minima Documentation
• Arduino IDE

FAQ

Is R7FA4 PLUS A compatible with Arduino UNO R4 Minima?
Yes. The board is designed around the same R7FA4M1AB3CFM / RA4M1 microcontroller family and uses an Arduino UNO R4 Minima compatible layout, which makes it suitable for Arduino-style development and shield expansion.

Does this board include wireless connectivity?
No. R7FA4 PLUS A focuses on wired embedded development and does not include onboard Wi-Fi or Bluetooth.

What makes R7FA4 PLUS A different from a more basic Arduino-compatible board?
This Waveshare board adds CAN bus, 2-channel DAC, flexible 5V / 3.3V power output, up to 2000mA 5V output, wider 6V to 24V input, and a layout that is easier to use with shields and lab expansion.