# Arduino Portenta C33

> Cost-effective Portenta module with Renesas RA6M5 ARM Cortex-M33 at 200MHz, 2MB flash, 512KB SRAM, WiFi/BLE, hardware security, and Portenta/MKR compatibility — bringing industrial IoT capabilities at a fraction of the X8 price.

## Quick Facts

- **Brand:** Arduino
- **Board Type:** compute-module
- **Price:** ~$50
- **Product Readiness:** developer
- **CPU:** ARM Cortex-M33 @ 200MHz, FPU, TrustZone
- **CPU Architecture:** ARM Cortex-M33
- **CPU Cores:** 1
- **RAM:** 512KB SRAM
- **Flash:** 2MB
- **USB:** USB-C
- **Power:** 5V
- **Operating Voltage:** 3.3V
- **Dimensions:** 66.04 × 25.4mm
- **Weight:** 10g
- **Antenna:** U.FL/IPEX
- **SD Card:** No

## Connectivity

- **Wifi:** 802.11 b/g/n
- **Bluetooth:** BLE 5.0

## Open Source

- **Firmware:** Yes
- **Schematics:** Yes
- **PCB Layout:** No

## Compatible Firmware

arduino, micropython

## Use Cases

- industrial-iot
- iot-gateway
- iot

## Components

- **R7FA6M5BH** (mcu): Renesas RA6M5 ARM Cortex-M33 at 200MHz with FPU, TrustZone, 2MB flash, 512KB SRAM, and Ethernet MAC. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.renesas.com%2Fen%2Fdocument%2Fdst%2Fra6m5-group-datasheet&ref=openhardware.directory&product=arduino-portenta-c33&source=md-export)

## Protocols

- **SPI**: notes: Via high-density connectors
- **I2C**: notes: Via high-density connectors
- **UART**: notes: Via high-density connectors
- **Ethernet**: notes: Via carrier board

## GPIO Map

| Pin | Name | Type | Functions |
|-----|------|------|-----------|
| GPIO0 | Digital I/O |  | digital-input, digital-output, pwm |
| GPIO1 | Digital I/O |  | digital-input, digital-output, pwm |
| GPIO2 | Digital I/O |  | digital-input, digital-output, pwm |
| GPIO3 | Digital I/O |  | digital-input, digital-output, pwm |
| A0 | Analog Input | ADC | adc |
| A1 | Analog Input | ADC | adc |

## Description

## Overview

The Arduino Portenta C33 brings Portenta-class industrial IoT capabilities at a significantly lower price point. Built around the Renesas RA6M5 ARM Cortex-M33 running at 200MHz with 2MB flash and 512KB SRAM, it supports WiFi, Bluetooth LE, hardware security, and the full Portenta high-density connector ecosystem.

Compatible with both Portenta and MKR carrier boards, the C33 is ideal for IoT gateways, remote control systems, fleet management, and industrial monitoring. It supports Arduino IDE, MicroPython, and Arduino Cloud with OTA firmware updates, real-time dashboards, and secure device management.

The Cortex-M33 architecture includes TrustZone for hardware-based security isolation, making it suitable for applications requiring secure firmware partitioning. It's the most accessible entry point to Arduino's professional Portenta ecosystem.

## Where to Buy

- [Arduino Store (US)](https://openhardware.directory/r?to=https%3A%2F%2Fstore-usa.arduino.cc%2Fproducts%2Fportenta-c33&ref=openhardware.directory&product=arduino-portenta-c33&source=md-export) — $50.00
- [Arduino Store (EU)](https://openhardware.directory/r?to=https%3A%2F%2Fstore.arduino.cc%2Fproducts%2Fportenta-c33&ref=openhardware.directory&product=arduino-portenta-c33&source=md-export) — €55.30
- [DigiKey](https://openhardware.directory/r?to=https%3A%2F%2Fwww.digikey.com%2Fen%2Fproducts%2Fdetail%2Farduino%2FABX00074%2F19090781&ref=openhardware.directory&product=arduino-portenta-c33&source=md-export) — $55.00
- [Mouser](https://openhardware.directory/r?to=https%3A%2F%2Fwww.mouser.com%2FProductDetail%2FArduino%2FABX00074&ref=openhardware.directory&product=arduino-portenta-c33&source=md-export) — $55.00

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Fstore.arduino.cc%2Fproducts%2Fportenta-c33&ref=openhardware.directory&product=arduino-portenta-c33&source=md-export)
- [wiki](https://openhardware.directory/r?to=https%3A%2F%2Fdocs.arduino.cc%2Fhardware%2Fportenta-c33%2F&ref=openhardware.directory&product=arduino-portenta-c33&source=md-export)
- [datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fdocs.arduino.cc%2Fresources%2Fdatasheets%2FABX00074-datasheet.pdf&ref=openhardware.directory&product=arduino-portenta-c33&source=md-export)

## Tags

`arduino`, `portenta`, `renesas`, `cortex-m33`, `wifi`, `ble`, `industrial`

## Images

![Arduino Portenta C33](https://nbg1.your-objectstorage.com/openhardware-directory/entities/arduino-portenta-c33/d28f3503ad70.jpg)

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