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Development board based on the R7FA4M1AB3CFM microcontroller and compatible with Arduino UNO R4 WiFi. It is equipped with ESP32-S3FN8 with a dual-core 32-bit Xtensa LX7 core and wireless communication in the 2.4GHz WiFi band and Bluetooth LE. Waveshare R7FA4 PLUS B
The development board based on the R7FA4M1AB3CFM microcontroller, compatible with Arduino UNO R4 WiFi, offers extensive capabilities for designers and electronics enthusiasts. The R7FA4 microcontroller with a 32-bit ARM Cortex-M4 core operates at a clock frequency of 48MHz and features 256kB Flash memory and 32kB RAM. Additionally, the board is equipped with the ESP32-S3FN8 module, featuring a dual-core 32-bit Xtensa LX7 core running at a clock frequency of 240MHz, with 384kB ROM, 512kB RAM, and 8MB Flash. This module supports wireless communication in the 2.4GHz WiFi and Bluetooth LE bands. The board also includes a 12×8 red LED matrix for customizable display effects.

| 1. R7FA4M1AB3CFM | 10. ESP32-S3 Connector | 
| 2. ESP32-S3-MINI-1 Module | 11. USB Communication Selection | 
| 3. Voltage Regulator 5V MP8759 | 12. ICSP Interface | 
| 4. Voltage Level Shifter TXB0108DQSR | 13. Power Configuration | 
| 5. Voltage Regulator 3.3V AMS1117-3.3 | 14. Reset Button | 
| 6. DC Input (6V to 24V) | 15. Arduino Interface | 
| 7. Qwiic Connector | 16. User LEDs | 
| 8. USB Type-C Connector | 17. TX/RX Indicators | 
| 9. Power Output Connector | 18. Power LEDs | 
| 19. 12×8 LED Matrix | 
The board can be powered with a voltage ranging from 6 to 24V, with a working voltage of 3.3V or 5V. It features a horizontal reset button. IO pins can provide an output current of 8 mA. The board has 14 digital pins and 6 analog pins, as well as 2 DACs, 6 PWMs, 1 UART, 1 I2C, 1 SPI, and 1 CAN. It also includes a low-profile DC jack and a 5V power output of up to 2000 mA.
Data sheet
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
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                    Development board based on the R7FA4M1AB3CFM microcontroller and compatible with Arduino UNO R4 WiFi. It is equipped with ESP32-S3FN8 with a dual-core 32-bit Xtensa LX7 core and wireless communication in the 2.4GHz WiFi band and Bluetooth LE. Waveshare R7FA4 PLUS B