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Green rectangular circuit board with black components and gold pins

Arduino

Arduino UNO R4 Minima ABX00080 32-bit development board

SKU CH-M03Q-PQX57

A 32-bit microcontroller board with the UNO form factor and 5 V operation

  • Product typeScience & Discovery
  • 32-bit RA4M1 processor delivers increased processing power for complex projects
  • Expanded memory capacity supports larger sketches and data handling
  • 5 V operating voltage matches existing UNO shields and accessories
  • UNO R3 form factor and pinout ensure hardware compatibility
  • Suitable for beginners and experienced makers in the Arduino ecosystem

Arduino UNO R4 Minima 32-bit board

The Arduino UNO R4 Minima ABX00080 is a 32-bit microcontroller development board built around the Renesas RA4M1 processor. It retains the classic UNO form factor and 5 V operating voltage while delivering increased processing power and expanded memory. The board suits beginners learning electronics and experienced makers building IoT edge devices. Existing UNO shields and accessories remain compatible without modification.

Thermals noise and power in normal use

The board operates at a practical 5 V supply and draws low current typical of 32-bit microcontroller workloads. No active cooling is required and the device runs silently in standard ambient conditions. Power consumption scales with attached peripherals and clock rate but stays within USB or barrel-jack limits. Thermal output is negligible for enclosure designs without forced airflow.

Deciding specification 32-bit RA4M1 processor

The single specification that determines suitability is the 32-bit RA4M1 microcontroller from Renesas. It provides the processing headroom and peripheral set needed for more complex real-time tasks than 8-bit AVR boards can handle. Projects requiring 8-bit architecture or legacy AVR register-level code will not run without porting. Buyers needing wireless connectivity or higher pin counts must look elsewhere.

How it compares

Measured against everything we stock in Single-Board Computers & Dev Kits, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 93% of the 1,420 comparable items (median $44.99).

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Specifications

Product
Product typeScience & Discovery

Questions about this item

How do I install the 32-bit RA4M1 microcontroller board into an existing UNO R3 project?

Align the board with the standard UNO pinout and power it at 5 V; the step people miss is updating any timing-sensitive libraries for the faster 32-bit core.

What maintenance will the RA4M1 microcontroller need over time?

No scheduled maintenance is required; keep the 5 V supply clean and protect the board from static discharge during handling.

What limit appears first when the 32-bit core runs sustained heavy workloads?

The 5 V regulator thermal limit is reached before the RA4M1 hits its maximum junction temperature.

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