Arduino ABX00032 Manual de usuario

Arduino® Nano 33 IoT

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Product Reference Manual

SKU: ABX00027

SKU(with headers): ABX00032

Description

Nano 33 IoT and Nano 33 IoT with headers is a miniature sized module containing a Cortex M0+ SAMD21

processor, a WiFi+BT module based on ESP32, a crypto chip which can securely store certiﬁcates and pre-shared

keys and a 6 axis IMU. The module can either be mounted as a DIP component (when mounting pin headers), or as

a SMT component, directly soldering it via the castellated pads.

Target areas:

Maker, enhancements, basic IoT application scenarios

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Features

SAMD21G18A

Processor

256KB Flash

32KB Flash

Power On Reset (POR) and Brown Out Detection (BOD)

Peripherals

12 channel DMA

12 channel event system

5x 16 bit Timer/Counter

3x 24 bit timer/counter with extended functions

32 bit RTC

Watchdog Time

CRC-32 generator

Full speed Host/Device USB with 8 end points

6x SERCOM (USART, I2C, SPI, LIN)

Two channel I2S

12 bit 350ksps ADC (up to 16 bit with oversampling)

10 bit 350ksps DAC

External Interrupt Controller (up to 16 lines)

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Nina W102

Module

Dual Core Tensilica LX6 CPU at up to 240MHz

448 KB ROM, 520KB SRAM, 2MB Flash

WiFi

IEEE 802.11b up to 11Mbit

IEEE 802.11g up to 54MBit

IEEE 802.11n up to 72MBit

2.4 GHz, 13 channels

-96 dBm sensitivity

Bluetooth® BR/EDR

Max 7 peripherals

2.4 GHz, 79 channels

Up to 3 Mbit/s

8 dBm output power at 2/3 Mbit/s

11 dBm EIRP at 2/3 Mbit/s

-88 dBm sensitivity

Bluetooth® Low Energy

Bluetooth® 4.2 dual mode

2.4GHz 40 channels

6 dBm output power

9 dBm EIRP

-88 dBm sensitivity

Up to 1 Mbit/

MPM3610 (DC-DC)

Regulates input voltage from up to 21V with a minimum of 65% eﬃciency @minimum load

More than 85% eﬃciency @12V

ATECC608A (Crypto Chip)

Cryptographic co-processor with secure hardware based key storage

Protected storage for up to 16 keys, certiﬁcates or data

ECDH: FIPS SP800-56A Elliptic Curve Diﬃe-Hellman

NIST standard P256 elliptic curve support

SHA-256 & HMAC hash including oﬀ-chip context save/restore

AES-128 encrypt/decrypt, galois ﬁeld multiply for GCM

LSM6DSL (6 axis IMU)

Always-on 3D accelerometer and 3D gyroscope

Smart FIFO up to 4 KByte based

±2/±4/±8/±16 g full scale

±125/±250/±500/±1000/±2000 dps full scale

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Contents
1 The Board
1.1 Application Examples
2 Ratings
2.1 Recommended Operating Conditions
2.2 Power Consumption
3 Functional Overview
3.1 Board Topology
3.2 Processor
3.3 WiFi/BT Communication Module
3.4 Crypto
3.5 IMU
3.6 Power Tree
4 Board Operation
4.1 Getting Started - IDE
4.2 Getting Started - Arduino Web Editor
4.3 Getting Started - Arduino IoT Cloud
4.4 Sample Sketches
4.5 Online Resources
4.6 Board Recovery
5 Connector Pinouts
5.1 USB
5.2 Headers
5.3 Debug
6 Mechanical Information
6.1 Board Outline and Mounting Holes
6.2 Connector Positions
7 Certiﬁcations
7.1 Declaration of Conformity CE DoC (EU)
7.2 Declaration of Conformity to EU RoHS & REACH 211 01/19/2021
7.3 Conﬂict Minerals Declaration
8 FCC Caution
9 Company Information
10 Reference Documentation
11 Revision History

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1 The Board

As all Nano form factor boards, Nano 33 IoT and Nano 33 IoT with headers does not have a battery charger but can

be powered through USB or headers.

NOTE: Arduino Nano 33 IoT and Nano 33 IoT with headers only supports 3.3V I/Os and is NOT 5V tolerant so

please make sure you are not directly connecting 5V signals to this board or it will be damaged. Also, as opposed to

Arduino Nano boards that support 5V operation, the 5V pin does NOT supply voltage but is rather connected,

through a jumper, to the USB power input.

1.1 Application Examples

Weather station: Using the Arduino Nano 33 IoT or Nano 33 IoT with headers together with a sensor and a OLED

display, we can create a small weather station communicating temperature, humidity etc. directly to your phone.

Air quality monitor: Bad air quality may have serious eﬀects on your health. By assembling the board, with a

sensor and monitor you can make sure that the air quality is kept in indoor-environments. By connecting the

hardware assembly to an IoT application/API, you will receive real time values.

Air drum: A quick and fun project is to create a small air drum. Connect your board and upload your sketch from

the Create Web Editor and start creating beats with your audio workstation of your choice.

2 Ratings

2.1 Recommended Operating Conditions

Symbol Description Min Max

Conservative thermal limits for the whole board: -40 °C ( 40 °F) 85°C ( 185 °F)

2.2 Power Consumption

Symbol Description Min Typ Max Unit

VINMax Maximum input voltage from VIN pad -0.3 - 21 V

VUSBMax Maximum input voltage from USB connector -0.3 - 21 V

PMax Maximum Power Consumption - - TBC mW

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3 Functional Overview

3.1 Board Topology

Board topology top

Ref. Description Ref. Description

U1 ATSAMD21G18A Controller U3 LSM6DSOXTR IMU Sensor

U2 NINA-W102-00B WiFi/BLE Module U4 ATECC608A-MAHDA-T Crypto Chip

J1 Micro USB Connector PB1 IT-1185-160G-GTR Push button

Board topology bottom

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Ref. Description Ref. Description

SJ1 Open solder bridge (VUSB) SJ4 Closed solder bridge (+3V3)

TP Test points xx Lorem Ipsum

3.2 Processor

The Main Processor is a Cortex M0+ running at up to 48MHz. Most of its pins are connected to the external

headers, however some are reserved for internal communication with the wireless module and the on-board

internal I2C peripherals (IMU and Crypto).

NOTE: As opposed to other Arduino Nano boards, pins A4 and A5 have an internal pull up and default to be used

as an I2C Bus so usage as analog inputs is not recommended.

Communication with NINA W102 happens through a serial port and a SPI bus through the following pins.

SAMD21 Pin SAMD21 Acronym NINA Pin NINA Acronym Description

13 PA08 19 RESET_N Reset

39 PA27 27 GPIO0 Attention Request

41 PA28 7 GPIO33 Acknowledge

23 PA14 28 GPIO5 SPI CS

21 GPIO19 UART RTS

24 PA15 29 GPIO18 SPI CLK

20 GPIO22 UART CTS

22 PA13 1 GPIO21 SPI MISO

21 PA12 36 GPIO12 SPI MOSI

31 PA22 23 GPIO3 Processor TX 🡺 Nina RX

32 PA23 22 GPIO1 Processor RX 🡸 Nina TX

3.3 WiFi/BT Communication Module

Nina W102 is based on ESP32 and is delivered with a pre-certiﬁed software stack from Arduino. Source code for the

ﬁrmware is available [9].

NOTE: Reprogramming the wireless module’s ﬁrmware with a custom one will invalidate compliance with radio

standards as certiﬁed by Arduino, hence this is not recommended unless the application is used in private

laboratories far from other electronic equipment and people. Usage of custom ﬁrmware on radio modules is the

sole responsibility of the user.

Some of the module’s pins are connected to the external headers and can be directly driven by ESP32 provided

SAMD21’s corresponding pins are aptly tri-stated. Below is a list of such signals:

SAMD21 Pin SAMD21 Acronym NINA Pin NINA Acronym Description

48 PB03 8 GPIO21 A7

14 PA09 5 GPIO32 A6

8 PB09 31 GPIO14 A5/SCL

7 PB08 35 GPIO13 A4/SDA

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3.4 Crypto

The crypto chip in Arduino IoT boards is what makes the diﬀerence with other less secure boards as it provides a

secure way to store secrets (such as certiﬁcates) and accelerates secure protocols while never exposing secrets in

plain text.

Source code for the Arduino Library that supports the Crypto is available [10]

3.5 IMU

The board has an embedded 6 axis IMU which can be used to measure board orientation (by checking the gravity

acceleration vector orientation) or to measure shocks, vibration, acceleration and rotation speed.

Source code for the Arduino Library that supports the IMU is available [11]

3.6 Power Tree

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Power tree

4 Board Operation

4.1 Getting Started - IDE

If you want to program your board while oﬄine you need to install the Arduino Desktop IDE [1] To connect the

Arduino 33 IoT to your computer, you’ll need a Micro-B 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 33 IoT can be found either in the “Examples” menu in the Arduino IDE or in the

“Documentation” section of the Arduino Pro 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

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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.

5 Connector Pinouts

Pinout

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