Arduino Nano 33 BLE Rev2 Board ABX00071 s nRF52840 Cortex-M4 a BLE 5.0

The Arduino Nano 33 BLE Rev2 stands out with its Nordic nRF52840 microcontroller, offering Bluetooth Low Energy 5.0 connectivity in the compact Nano form factor. Unlike many Nano boards that rely on external modules for wireless, this board integrates the radio directly, making it ideal for battery-powered IoT projects where space and power efficiency matter.

Highlights

• Nordic nRF52840 ARM Cortex-M4 processor running at 64 MHz
• 1 MB flash and 256 KB SRAM for larger sketches and data buffers
• Bluetooth Low Energy 5.0 with on-board antenna
• 14 digital I/O pins, 8 analog inputs, and 14 PWM channels
• Wide input voltage range from 5 V to 21 V for flexible powering

In daily use

The Nano 33 BLE Rev2 is a drop-in replacement for classic Nano boards when you need wireless connectivity. Its 3.3 V operating voltage and 15 mA per I/O pin require attention to level shifting for 5 V peripherals, but the low power consumption and BLE capability make it a strong choice for wearables, remote sensors, and edge devices. The micro USB port provides programming and power, while the SWD interface allows advanced debugging.

Full specifications

• Microcontroller: Nordic nRF52840
• Processor core: ARM Cortex-M4
• Clock speed: 64 MHz
• Flash memory: 1 MB
• SRAM: 256 KB
• Operating voltage: 3.3 V
• Input voltage (VIN): 5–21 V
• Digital I/O pins: 14
• Analog input pins: 8
• PWM digital I/O pins: 14
• DC current per I/O pin: 15 mA
• Wireless connectivity: Bluetooth Low Energy 5.0
• USB connector: Micro USB
• Communication interfaces: UART, SPI, I2C
• Form factor: Arduino Nano
• On-board LEDs: Power, TX, RX, D13
• On-board crystal: 32.768 kHz (RTC), 64 MHz (main)
• Debugging interface: SWD

Final note

The Arduino Nano 33 BLE Rev2 brings modern BLE connectivity to the trusted Nano footprint, backed by the extensive Arduino ecosystem and libraries.