Original Arduino UNO EK

What It Is

This board is the next-generation Arduino UNO with a modern 32-bit processor instead of the classic 8-bit chip bringing much higher performance, memory, and advanced peripherals while keeping the familiar UNO form factor.

Technical Infographic: UNO EK R4 Minima

| Arduino UNO EK R4 Minima Infographic |  Microcontroller: Renesas R7FA4M1AB3CFM | | Processor: 48 MHz Arm Cortex-M4 | | Core: 32-bit, with FPU | | Operating Voltage: 5 V | | Recommended VIN: 624 V | | Flash Memory: 256 kB | | SRAM: 32 kB | | EEPROM: 8 kB | | Digital I/O Pins: 14 (D0D13) | | PWM Pins: 6 (D3,5,6,9,10,11) | | Analog Inputs: 6 (A0A5) | | USB: USB-C Full Speed | | Extra Peripherals: DAC, RTC, MPU, CTSU | | Comms Interfaces: UART, I2C, SPI, CAN | | PCB Size & Fit: UNO-compatible layout|  Compatible with most existing UNO shields * Ideal fornbsp;

Key Advantages Compared to Older UNO R3:

• Much faster processor (48 MHz vs 16 MHz)

• 8 more Flash memory & 16 more SRAM

• Built-in RTC (Real-Time Clock) and DAC outputs

• Supports HID like keyboard/mouse emulation

• USB-C connector for modern connectivity

Feature Highlights

High Performance

• 32-bit Arm Cortex-M4 core (48 MHz) can handle larger code and complex tasks.

• Floating-point unit for math-heavy processing.

Memory & Storage

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More space for larger sketches and data.

Advanced On-Board Modules

DAC (Digital-to-Analog Converter) better audio & analog output Real-Time Clock (RTC) keeps time accurately for clocks/data logging Memory Protection Unit (MPU) extra safety and reliability Capacitive touch sensing (CTSU)

I/O & Communication

Advanced communication options for sensors aProtection

5 V logic level (works with existing Arduino shields) VIN 624 V support flexible power options. Reverse polarity & overvoltage protection included.

Why It Matters

This board represents a modern upgrade path from the classic UNO line:

Better suited to IoT, robotics, edge computing, data logging, and real-time control. Students & educators can learn ARM-based embedded programming. Still supported by Arduino IDE and many libraries easing migration.

Typical Uses

• Robotics & automation systems

• Sensor networks and advanced data acquisition

• Real-time clock applications

• Audio/analog projects via DAC

• CAN bus communication for automotive/industR3 vs R4 Minima

   

  Who It's For

  Beginners moving to advanced microcontrollers Robotics enthusiasts IoT developers Educators teaching embedded systems Makers requiring higher performance than classic Arduino UNO

  Summary

  The Original Arduino UNO EK () R4 Minima is a powerful, Made in India 32-bitrn features (RTC, DAC), and compatibility with existing UNO shields perfect for next-generation embedded project