Arduino® Nano RP2040 Connect

Description

The feature-packed Arduino® Nano RP2040 Connect brings the new Raspberry Pi RP2040 microcontroller to the Nano form factor. Make the most of the dual core 32-bit Arm® Cortex®-M0+ to make Internet of Things projects with Bluetooth® and Wi-Fi connectivity thanks to the U-blox® Nina W102 module. Dive into real-world projects with the onboard accelerometer, gyroscope, RGB LED and microphone. Develop robust embedded AI solutions with minimal effort using the Arduino® Nano RP2040 Connect!

Target Areas

• Internet of Things (IoT)
• Machine learning
• Prototyping

Features

Raspberry Pi RP2040 Microcontroller

• 133MHz 32bit Dual Core Arm® Cortex®-M0+
• 264kB on-chip SRAM
• Direct Memory Access (DMA) controller
• Support for up to 16MB of off-chip Flash memory via dedicated QSPI bus
• USB 1.1 controller and PHY, with host and device support
• 8 PIO state machines
• Programmable IO (PIO) for extended peripheral support
• 4 channel ADC with internal temperature sensor, 0.5 MSa/s, 12-bit conversion
• SWD Debugging
• 2 on-chip PLLs to generate USB and core clock
• 40nm process node
• Multiple low power mode support
• USB 1.1 Host/Device
• Internal Voltage Regulator to supply the core voltage
• Advanced High-performance Bus (AHB)/Advanced Peripheral Bus (APB)

U-blox® Nina W102 Wi-Fi/Bluetooth® Module

• 240MHz 32bit Dual Core Xtensa LX6
• 520kB on-chip SRAM
• 448 Kbyte ROM for booting and core functions
• 16 Mbit FLASH for code storage including hardware encryption to protect programs and data
• 1 kbit EFUSE (non-erasable memory) for MAC addresses, module configuration, Flash-Encryption, and Chip-ID
• IEEE 802.11b/g/n single-band 2.4 GHz Wi-Fi operation
• Bluetooth® 4.2
• Integrated Planar Inverted-F Antenna (PIFA)
• 4x 12-bit ADC
• 3x I2C, SDIO, CAN, QSPI

Memory

• AT25SF128A 16MB NOR Flash
• QSPI data transfer rate up to 532Mbps
• 100K program/erase cycles

ST LSM6DSOXTR 6-axis IMU

• 3D Gyroscope: ±2/±4/±8/±16 g full scale
• 3D Accelerometer: ±125/±250/±500/±1000/±2000 dps full scale
• Advanced pedometer, step detector and step counter
• Significant Motion Detection, Tilt detection
• Standard interrupts: free-fall, wake-up, 6D/4D orientation, click and double-click
• Programmable finite state machine: accelerometer, gyroscope and external sensors
• Machine Learning Core
• Embedded temperature sensor

ST MP34DT06JTR MEMS Microphone

• AOP = 122.5 dBSPL
• 64 dB signal-to-noise ratio
• Omnidirectional sensitivity
• -26 dBFS ± 1 dB sensitivity

RGB LED

• Common Anode
• Connected to U-blox® Nina W102 GPIO

Microchip® ATECC608A Crypto

• Cryptographic Co-Processor with Secure Hardware-Based Key Storage
• I2C, SWI
• Hardware Support for Symmetric Algorithms: SHA-256 & HMAC Hash including off-chip context save/restore, AES-128: Encrypt/Decrypt, Galois Field Multiply for GCM
• Internal High-Quality NIST SP 800-90A/B/C Random Number Generator (RNG)
• Secure Boot Support: Full ECDSA code signature validation, optional stored digest/signature, Optional communication key disablement prior to secure boot, Encryption/Authentication for messages to prevent on-board attacks

I/O

• 14x Digital Pin
• 8x Analog Pin
• Micro USB
• UART, SPI, I2C Support

Power

• Buck step-down converter

Safety Information

• Class A

Functional Overview

3.1 Block Diagram

The block diagram illustrates the core components and their interconnections. Power input comes from VUSB or VIN, feeding into an MP2322 Regulator which outputs 3V3. This 3V3 rail powers the RP2040 microcontroller, the Nina W102 Wi-Fi/BT module, the MP34DT06J MEMS Microphone, the ATECC608A Crypto IC, the LSM6DSOXTR 6-axis IMU, and the AT25SF128A 16MB Flash IC. The RP2040 communicates with the Nina W102 via SPI and potentially other interfaces. The RP2040 also interfaces with the Flash memory via QSPI, the MEMS Microphone via PDM, the Crypto IC via I2C/SWI, and the IMU via I2C/SPI. The Nina W102 module handles Wi-Fi and Bluetooth communication. An RGB LED is also connected and controlled by the Nina W102. The diagram includes a legend indicating Power, Microcontroller, Data Communication, Software, LED, and Internal Parts.

3.2 Board Topology

Front View: The front view of the Arduino Nano RP2040 Connect board shows the placement of various components and connectors. Key components include the Raspberry Pi RP2040 Microcontroller (U1), Ublox NINA-W102 Wi-Fi/Bluetooth® Module (U2), 16MB Flash IC (U5), ATECC608A Crypto IC (U4), Step-Down Buck Regulator (U6), MEMS Microphone (U8), and 6-axis IMU (U9). Connectors include a Micro USB connector (J1). Indicator LEDs are also visible: Green Power On LED (DL1), Builtin Orange LED (DL2), and RGB Common Anode LED (DL3). Pin headers are labeled JP2 and JP3. A Reset Button (PB1) is also present.

Back View: The back view of the Arduino Nano RP2040 Connect board shows jumpers. SJ4 is the 3.3V jumper (connected), and SJ1 is the VUSB jumper (disconnected).

3.3 Processor

The processor is based upon the new Raspberry Pi RP2040 silicon (U1). This microcontroller provides opportunities for low-power Internet of Things (IoT) development and embedded machine learning. Two symmetric Arm® Cortex®-M0+ clocked at 133MHz provide computation power for embedded machine learning and parallel processing with low power consumption. Six independent banks of 264 KB SRAM and 2MB are provided. Direct memory access provides fast interconnect between the processors and the memory that can be made inactive along with the core to enter a sleep state. Serial wire debug (SWD) is available from boot via the pads under the board. The RP2040 runs at 3.3V and has an internal voltage regulator providing 1.1V.

The RP2040 controls the peripherals and digital pins, as well as analog pins (A0-A3). The I2C connections on pins A4 (SDA) and A5 (SCL) are used for connecting to the onboard peripherals and are pulled up with a 4.7 kΩ resistor. SWD Clock line (SWCLK) and reset are also pulled up with a 4.7 kΩ resistor. An external MEMS oscillator (U7) running at 12MHz provides the clock pulse. Programmable IO helps to the implementation of arbitrary communication protocol with minimal burden on the main processing cores. A USB 1.1 device interface is implemented on the RP2040 for uploading code.

3.4 Wi-Fi/Bluetooth® Connectivity

Wi-Fi and Bluetooth® connectivity is provided by the Nina W102 (U2) module. The RP2040 only has 4 analog pins, and the Nina is used to extend that to the full eight as is standard in the Arduino Nano form factor with another 4 12-bit analog inputs (A4-A7). Additionally, the common anode RGB LED is also controlled by the Nina W-102 module such that the LED is off when the digital state is HIGH and on when the digital state is LOW. The internal PCB antenna in the module eliminates the need for an external antenna.

The Nina W102 module also includes a dual core Xtensa LX6 CPU that can also be programmed independently of the RP2040 through the pads under the board using SWD.

3.5 6-Axis IMU

It is possible to obtain 3D gyroscope and 3D accelerometer data from the LSM6DSOX 6-axis IMU (U9). In addition to providing such data, it is also possible to do machine learning on the IMU for gesture detection.

3.6 External Memory

The RP2040 (U1) has access to an additional 16 MB of flash memory via a QSPI interface. The execute-in-place (XIP) feature of the RP2040 allows external flash memory to be addressed and accessed by the system as though it were internal memory, without first copying the code to internal memory.

3.7 Cryptography

The ATECC608A Cryptographic IC (U4) provides secure boot capabilities alongside SHA and AES-128 encryption/decryption support for security in Smart Home and Industrial IoT (IIoT) applications. Additionally, a random number generator is also available for use by the RP2040.

3.8 Microphone

The MP34DT06J microphone is connected via a PDM interface to the RP2040. The digital MEMS microphone is omnidirectional and operate via a capacitive sensing element with a high (64 dB) signal to noise ratio. The sensing element, capable of detecting acoustic waves, is manufactured using a specialized silicon micromachining process dedicated to produce audio sensors.

3.9 RGB LED

The RGB LED (DL3) is a common anode LED that is connected to the Nina W102 module. The LED are off when the digital state is HIGH and on when the digital state is LOW.

3.10 Power Tree

The power tree diagram illustrates how power is distributed on the Arduino Nano RP2040 Connect. Power is supplied via Micro USB (5V) or VIN (3-20V). An onboard MP2322GQH DCDC buck converter, capable of 800mA, steps down the input voltage to 3V3. This 3V3 rail powers the RP2040 microcontroller, the Nina W102 Wi-Fi/BT module, the MP34DT06JTR microphone, the ATECC608A crypto IC, the LSM6DSOXTR IMU, and the AT25SF128A flash memory. The RP2040 also has an internal 1V8 regulator. The legend indicates components, power I/O, max current, conversion type, and voltage range.

Board Operation

4.1 Getting Started - IDE

If you want to program your Arduino® Nano RP2040 Connect while offline you need to install the Arduino® Desktop IDE [1]. To connect the Arduino® Edge control to your computer, you'll need a micro USB cable. This also provides power to the board, as indicated by the LED.

4.2 Getting Started - Arduino Web Editor

All Arduino® boards, including this one, work out-of-the-box on the Arduino® Web Editor [2], by just installing a simple plugin. The Arduino® Web Editor is hosted online, therefore it will always be up-to-date with the latest features and support for all boards. Follow [3] to start coding on the browser and upload your sketches onto your board.

4.3 Getting Started - Arduino IoT Cloud

All Arduino® IoT enabled products are supported on Arduino® IoT Cloud which allows you to Log, graph and analyze sensor data, trigger events, and automate your home or business.

4.4 Sample Sketches

Sample sketches for the Arduino® Nano RP2040 Connect can be found either in the "Examples" menu in the Arduino® IDE or in the “Documentation" section of the Arduino website [4].

4.5 Online Resources

Now that you have gone through the basics of what you can do with the board you can explore the endless possibilities it provides by checking exciting projects on ProjectHub [5], the Arduino® Library Reference [6] and the online store [7] where you will be able to complement your board with sensors, actuators and more.

4.6 Board Recovery

All Arduino boards have a built-in bootloader which allows flashing the board via USB. In case a sketch locks up the processor and the board is not reachable anymore via USB it is possible to enter bootloader mode by double-tapping the reset button right after power up.

Connector Pinouts

5.1 J1 Micro USB

5.2 JP1

5.3 JP2

Note: The analog reference voltage is fixed at +3.3V. A0-A3 are connected to the RP2040's ADC. A4-A7 are connected to the Nina W102 ADC. Additionally, A4 and A5 are shared with the I2C bus of the RP2040 and are each pulled up with 4.7 kΩ resistors.

5.4 RP2040 SWD Pad

5.5 Nina W102 SWD Pad

Mechanical Information

The mechanical dimensions diagram shows the physical layout of the Arduino Nano RP2040 Connect. The overall dimensions are approximately 43.18mm in length and 17.77mm in width. The pin header pitch is 2.54mm. Key internal dimensions include a width of 15.24mm for the main component area and a length of 40.64mm for the pin header rows. The diameter of the mounting holes is 1.65mm. The diagram also indicates a 1.26mm border around the edges.

Certifications

7.1 Declaration of Conformity CE DoC (EU)

Arduino S.r.l. declares under its sole responsibility that the products are in conformity with the essential requirements of the relevant EU Directives and therefore qualify for free movement within markets comprising the European Union (EU) and European Economic Area (EEA).

7.2 Declaration of Conformity to EU RoHS & REACH 211 01/19/2021

Arduino boards are in compliance with RoHS 2 Directive 2011/65/EU and RoHS 3 Directive 2015/863/EU, restricting the use of certain hazardous substances in electrical and electronic equipment. The maximum limits for the listed substances are: Lead (Pb): 1000 ppm, Cadmium (Cd): 100 ppm, Mercury (Hg): 1000 ppm, Hexavalent Chromium (Cr6+): 1000 ppm, Poly Brominated Biphenyls (PBB): 1000 ppm, Poly Brominated Diphenyl ethers (PBDE): 1000 ppm, Bis(2-Ethylhexyl} phthalate (DEHP): 1000 ppm, Benzyl butyl phthalate (BBP): 1000 ppm, Dibutyl phthalate (DBP): 1000 ppm, Diisobutyl phthalate (DIBP): 1000 ppm.

Exemptions: No exemptions are claimed.

Arduino Boards are fully compliant with European Union Regulation (EC) 1907/2006 (REACH). None of the Substances of Very High Concern (SVHCs) from the ECHA candidate list are present in quantities totaling 0.1% or above. Products do not contain substances from the "Authorization List" (Annex XIV) or SVHCs from Annex XVII in significant amounts.

7.3 Conflict Minerals Declaration

As a global supplier, Arduino is aware of obligations regarding Conflict Minerals (Dodd-Frank Act, Section 1502). Arduino does not directly source or process conflict minerals (Tin, Tantalum, Tungsten, Gold). These minerals may be present in solder or metal alloys. Through reasonable due diligence, component suppliers have been contacted to verify compliance. Based on this information, Arduino declares that its products contain Conflict Minerals sourced from conflict-free areas.

7.4 FCC Caution

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This device complies with part 15 of the FCC Rules. Operation is subject to two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

FCC RF Radiation Exposure Statement:

1. This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
2. This equipment complies with RF radiation exposure limits set forth for an uncontrolled environment.
3. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

Industry Canada Compliance: This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

French: Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil nedoit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

IC SAR Warning: This equipment should be installed and operated with minimum distance 20 cm between the radiator and your body.

French: Lors de l'installation et de l'exploitation de ce dispositif, la distance entre le radiateur et le corps est d'au moins 20 cm.

Company Information

Company name: Arduino S.r.l.

Company Address: Via Ferruccio Pelli 14, 6900 Lugano, TI (Ticino), Switzerland

Reference Documentation

Revision History