在大家都在翘首期盼之时，近日 Arduino 正式发布了 Arduino Uno R3 的升级版 —— Arduino Uno R4，新产品在处理能力、内存、存储和连接等方面都带来了巨大提升。 Arduino Uno R4 与 R3 配置对比

Nov 10, 2023 · Arduino UNO R4 搭载的Cortex M4 微控制器，提供更高的性能、更快的时钟速度和更先进的指令集。 相比于 Uno R3，它可以更高效、更快地执行代码，不仅能轻松处理更复杂的项目，还能提供更快的运行速度。 与 Uno R3 相比，Cortex M4 微控制器的处理能力大幅提高了3倍到16倍。 与采用 Cortex M0+ 的 Raspberry Pi Pico 等较小的微控制器板相比，Cortex-M4 的性能大约提高了六倍。 通过更快的时钟速度和扩展的内存，你将告别那些常见的令人困惑的时 …

Jul 22, 2023 · The R4 Uno uses a Renesas R7FA4M1AB3CFM#AA0 and not a Microchip AVR MCU. Have a look at the Renesas RA4M1 Group User Manual: Hardware, and see if you find the words PINB or PORTB mentioned.

Apr 3, 2023 · Arduino UNO R4 将于 5 月发售，定价暂未公布，提供“Minima”（常规）和 Wi-Fi 版本可选，无线版本将配备支持 Wi-Fi 和蓝牙连接的 Espressif S3 模块。 UNO R4 保持与 R3 相同的引线布局，升级到 48 MHz 的 32 位 Renesas RA4M1 处理器。

Dec 12, 2024 · Arduino有數百款相容開發板，它們有不同的名稱和微控器。 以Arduino官方的 UNO R3與R4為例，兩種開發板採用不同廠商、不同架構的微控器，UNO R3採用ATmega328，屬於AVR系列，Arduino Micro, Leonardo（李奧納多）和MEGA 2560開發板，也都採用AVR系列微控器。 UNO R4開發板採用日本 瑞薩電子（Renesas Electronics）的RA4M1微控器，除了R4，Arduino原廠的一款，定位在「工業級」高階產品的 Portenta C33開發板，也採用瑞薩電 …

Arduino R4 Minima: 8mA; Arduino R4 WiFi: 8mA; The AVR 8bit microcontrollers are unusual compared to many modern 3.3V microcontrollers with their fairly high current limits. The datasheets for the ATmega328P and ATmega32u4 used on the UNO R3 and Leonardo, respectively, give a an absolute maximum value of 40mA per GPIO.

The OSEPP™ Uno R4 Plus board is the most popular Arduino board out in the Arduino market! This board uses the 8-bit, AVR, RISC-based ATmega328P microcontroller from Atmel.New features in R4: New Features in R4:

Sep 12, 2023 · Hey, i want to use the Watchdog Timer on my new Uno R4 Wifi. I've tried using the avr/wdt.h libary, but i got an error "No such file or directory" in the #include <avr/wdt.h> line. This makes sense to me because the r4 uses an renessas architecture unlike the r3. But how can i use the watchdog timer on the arduino R4?

The Arduino® UNO R4 Minima is a development board with the classic UNO form factor, based on the RA4M1 microcontroller made by Renesas. It now comes with 32 kB of RAM memory, a clock speed of 48 MHz, and a USB-C® port. This is the first UNO board that uses a 32-bit architecture, being previously based on an 8-bit AVR architecture.

Oct 11, 2024 · You seem to be comparing "absolute max" ratings from the AVR-DA with "recommended" maximums on the mega328p (which has a "absolute max" of 40mA in datasheet.) If your comparison is to be at all useful, you need to be more careful.