R7FA4 PLUS A
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Overview
Introduction
The R7FA4 Plus development platform provides users with an economical, flexible, and convenient way to realize more creative ideas. On the hardware, it features Renesas Electronics' powerful 32-bit microcontroller R7FA4M1AB3CFM, which has expanded memory, peripherals, and faster clocks, enabling it to easily handle complex projects.
Features
- Based on R7FA4M1AB3CFM, and is compatible with Arduino UNO R4 Minima.
- Utilizes Renesas Electronics' RA4M1 (Arm® Cortex®-M4) microcontroller, with a main frequency of 48MHz.
- Equipped with 256 kB Flash and 32 kB RAM, the expanded memory can easily handle complex projects.
- The R7FA4 Plus development board adds a 12-bit DAC, CAN bus, and operational amplifiers, providing expanded functionality and flexibility for designs.
- Onboard 5V/3.3V headers for easy voltage switching, allowing the use of more expansion modules.
- Flexible power options, supporting USB-C power supply or external input power VIN (6V<=VIN<=24V).
- Onboard power indicator LED (PWR), USER LED, serial port receive indicator LED (RX), and transmit indicator LED (TX), making it easy to monitor the working status of the development board.
- Onboard ICSP interface, can be used as an SPI interface.
- Supports user soldering of corresponding interface insertion into the experimental board.
Product Parameters Comparison
| MODEL | 
|
|
|
|---|---|---|---|
| MICROCONTROLLER | R7FA4 (32-bit ARM Cortex-M4) |
R7FA4 (Dual-core 32-bit ARM Cortex-M4) |
ESP32-S3R8 (Dual-core 32-bit Xtensa LX7) |
| ESP32-S3FN8 (Dual-core 32-bit Xtensa LX7) | |||
| CLOCK FREQUENCY | R7FA4: 48MHz | R7FA4: 48MHz | ESP32-S3R8: 240MHz |
| ESP32-S3FN8: 240MHz | |||
| STORAGE | R7FA4: 256kB Flash, 32kB RAM | R7FA4: 256kB FLASH, 32kB RAM |
ESP32-S3R8: 384kB ROM, 512kB RAM, 16MB Flash, 8MB PSRAM |
| ESP32-S3FN8: 384kB ROM, 512kB RAM, 8MB Flash | |||
| WIRELESS COMMUNICATION | None | 2.4GHz WiFi + Bluetooth LE | |
| OPERATING VOLTAGE | Options for 5V/3.3V, support more shields | 3.3V | |
| POWER INPUT | 6~24V | 6~21V | |
| RESET BUTTON | Lateral, easier to use when connecting with shield | Vertical | |
| IO PIN OUTPUT CURRENT |
8mA | 40mA | |
| DIGITAL PINS | 14 | 14 | |
| ANALOG PINS | 6 | 8 | |
| DAC | 2 | None | |
| PWM | 6 | 5 | |
| UART | 1 | 2 | |
| I2C | 1 | 1 | |
| SPI | 1 | 1 | |
| CAN | 1 | None | |
| DC JACK | Low profile, shields won't be blocked anymore while connecting | None | |
| POWER OUTPUT HEADER | Provides 5V OR 3.3V power output and common-grounding with other boards | None | |
| 5V POWER OUTPUT | Up to 2000mA Max, features higher driving capability | 1000mA Max | |
| EXPERIMENTAL BOARD | Support, the solder pad is provided for DIY interfaces to connect with the experimental board | Support | |
Hardware Description
Onboard Interface
Pinout Definition
Dimensions
Arduino IDE Development
Install Arduino IDE
- The following development is based on Windows by default.
- Open download page, and select the corresponding one to download according to your system and system bits.
- Select "JUST DOWNLOAD" OR "CONTRIBUTE DOWNLOAD".
- Just run to install and install all the defaults.
Install Board Package
- Please open "Board Manager" on the left, search "UNO R4 Minima" and install the latest version (or the version to be used):
Create Example
- The following example is about how to make LED blinks (File -> examples -> Blink under 01.Basics).
- Select the development board and COM port.
Search UNO R4, select Arduino UNO R4 Minima, and then click on "OK".
- Click ✓ in the menu bar to compile, and click → to burn the compiled program to the board.
Open Example
- Open the existing example, the operation is simpler, directly run the corresponding .ino demo, refer to the operation above, select the corresponding board and port, compile download and burn.
Example Explanation
GPIO_TEST
This demo is for testing the GPIO0-13 output, in this demo, the GPIO0-13 is initialized as output mode and outputs the high level or low level in order.
ADC_TEST
Photosensitive demo obtains the value of the photosensitive resistor by reading the analog pins A0-A5. If the value is greater than or equal to 730, then you should turn on the LED pin and energize the relay pin. Otherwise, turn off the LED pin and deactivate the relay pin.
The Read_Analog_Input demo is to get the value of the analog pin of the raindrop sensor by reading pin A0. If the value is less than 500, the LED is on; otherwise, turn off the LED.
Resource
Document
Software
Related Tutorial
Support
Technical Support
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