Arduino Nano 33 BLE Sense Rev2 User manual

Arduino® Nano 33 BLE Sense Rev2
1 / 19 Arduino® Nano 33 BLE Sense Rev2 Modified: 12/01/2023
Product Reference Manual
SKU: ABX00069
Description
The Arduino Nano 33 BLE Sense Rev2 is a miniature sized module containing a NINA B306 module, based on
Nordic nRF52480 and containing a Cortex M4F. The BMI270 and BMM150 jointly provide a 9 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, IoT application

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Features
NINA B306 Module
Processor
64 MHz Arm® Cortex®-M4F (with FPU)
1 MB Flash + 256 KB RAM
Bluetooth® 5 multiprotocol radio
2 Mbps
CSA #2
Advertising Extensions
Long Range
+8 dBm TX power
-95 dBm sensitivity
4.8 mA in TX (0 dBm)
4.6 mA in RX (1 Mbps)
Integrated balun with 50 Ω single-ended output
IEEE 802.15.4 radio support
Thread
Zigbee
Peripherals
Full-speed 12 Mbps USB
NFC-A tag
Arm CryptoCell CC310 security subsystem
QSPI/SPI/TWI/I²S/PDM/QDEC
High speed 32 MHz SPI
Quad SPI interface 32 MHz
EasyDMA for all digital interfaces
12-bit 200 ksps ADC
128 bit AES/ECB/CCM/AAR co-processor
BMI270 6-axis IMU (Accelerometer and Gyroscope)
16-bit
3-axis accelerometer with ±2g/±4g/±8g/±16g range
3-axis gyroscope with ±125dps/±250dps/±500dps/±1000dps/±2000dps range
BMM150 3-axis IMU (Magnetometer)
3-axis digital geomagnetic sensor
0.3μT resolution
±1300μT (x,y-axis), ±2500μT (z-axis)

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LPS22HB (Barometer and temperature sensor)
260 to 1260 hPa absolute pressure range with 24 bit precision
High overpressure capability: 20x full-scale
Embedded temperature compensation
16-bit temperature data output
1 Hz to 75 Hz output data rateInterrupt functions: Data Ready, FIFO flags, pressure thresholds
HS3003 Temperature & humidity sensor
0-100% relative humidity range
Humidity accuracy: ±1.5%RH, typical (HS3001, 10 to 90%RH,25°C)
Temperature sensor accuracy: ±0.1°C, typical
Up to 14-bit humidity and temperature output data
APDS-9960 (Digital proximity, Ambient light, RGB and Gesture Sensor)
Ambient Light and RGB Color Sensing with UV and IR blocking filters
Very high sensitivity – Ideally suited for operation behind dark glass
Proximity Sensing with Ambient light rejection
Complex Gesture Sensing
MP34DT06JTR (Digital Microphone)
AOP = 122.5 dbSPL
64 dB signal-to-noise ratio
Omnidirectional sensitivity
–26 dBFS ± 3 dB sensitivity
MP2322 DC-DC
Regulates input voltage from up to 21V with a minimum of 65% efficiency @minimum load
More than 85% efficiency @12V

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Contents
1 The Board
1.1 Ratings
1.1.1 Recommended Operating Conditions
1.2 Power Consumption
2 Functional Overview
2.1 Board Topology
2.2 Processor
2.3 IMU
2.4 LPS22HB (U9) Barometer and Temperature Sensor
2.5 HS3003 (U8) Relative Humidity and Temperature Sensor
2.5.1 Gesture Detection
2.5.2 Proximity Detection
2.5.3 Color and ALS Detection
2.6 Digital Microphone
2.7 Power Tree
3 Board Operation
3.1 Getting Started - IDE
3.2 Getting Started - Arduino Web Editor
3.3 Getting Started - Arduino IoT Cloud
3.4 Sample Sketches
3.5 Online Resources
3.6 Board Recovery
4 Connector Pinouts
4.1 USB
4.2 Headers
4.3 Debug
5 Mechanical Information
5.1 Board Outline and Mounting Holes
6 Certifications
6.1 Declaration of Conformity CE DoC (EU)
6.2 Declaration of Conformity to EU RoHS & REACH 211 01/19/2021
6.3 Conflict Minerals Declaration
7 FCC Caution
8 Company Information

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9 Reference Documentation
10 Revision History

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1 The Board
As all Nano form factor boards, Nano 33 BLE Sense Rev2 does not have a battery charger but can be powered
through USB or headers.
NOTE: Arduino Nano 33 BLE Sense Rev2 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 Ratings
1.1.1 Recommended Operating Conditions
Symbol Description Min Max
Conservative thermal limits for the whole board: -40 °C ( 40 °F) 85°C ( 185 °F)
1.2 Power Consumption
Symbol Description Min Typ Max Unit
PBL Power consumption with busy loop TBC mW
PLP Power consumption in low power mode TBC mW
PMAX Maximum Power Consumption TBC mW

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2 Functional Overview
2.1 Board Topology
Top:
Board topology top
Ref. Description Ref. Description
U1 NINA-B306 Module Bluetooth® Low Energy 5.0 Module U6 MP2322GQH Step Down Converter
U2 BMI270 Sensor IMU PB1 IT-1185AP1C-160G-GTR Push button
U3 MP34DT06JTR MEMS Microphone U8 HS3003 Humidity Sensor
U7 BMM150 Magnetometer IC DL1 Led L
U5 APDS-9660 Ambient Module DL2 Led Power
U9 LPS22HBTR Pressure Sensor IC
Bottom:

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Board topology bot
Ref. Description Ref. Description
SJ1 VUSB Jumper SJ2 D7 Jumper
SJ3 3v3 Jumper SJ4 D8 Jumper
2.2 Processor
The Main Processor is an Arm® Cortex®-M4F running at up to 64MHz. 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.
2.3 IMU
The Arduino Nano 33 BLE Sense Rev2 provides IMU capabilities with 9-axis, by combination of the BMI270 and
BMM150 ICs. The BMI270 includes both a three axis gryroscope as well as an three axis accelerometer, while the
BMM150 is capable of sensing magnetic field variations in all three dimensions. The information obtained can be
used for measuring raw movement parameters as well as for machine learning.

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2.4 LPS22HB (U9) Barometer and Temperature Sensor
The LPS22HB pressure sensor IC (U9) includes both a piezoresistive absolute pressure sensor together with a
temperature sensor integrated into a small chip. The pressure sensor (U9) interfaces with the main microcontroller
(U1) via an I2C interface. The sensing element is composed of a micromachined suspended membrane for
measuring absolute pressure, and includes a Wheatstone bridge internally for measuring the the piezoresistive
elements. The temperature perturbations are compensated via an included temperature sensor on-chip. The
absolute pressure can range from 260 to 1260 hPa. Pressure data can be polled via I2C at up to 24-bits, while
temperature data can be polled at up to 16-bits. The Arduino_LPS22HB library provides a ready to use
implementation of the I2C protocol with this chip.
2.5 HS3003 (U8) Relative Humidity and Temperature Sensor
The HS3003 (U8) is a MEMS sensors, designed to provide accurate readings of relative humidity and temperature in
a small package. Temperature-compensation and calibration is performed on-chip, without requiring external
circuitry. The HS3003 can measure the relative humidity from 0% to 100%RH with fast response times (under 4
seconds). The included on-chip temperature sensor (used for compensation) is has a temperature accuracy of
±0.1°C. U8 communicates via the main microcontroller via an I2C bus.
2.5.1 Gesture Detection
Gesture detection utilizes four directional photodiodes to sense reflected IR energy (sourced by the integrated LED)
to convert physical motion information (i.e. velocity, direction and distance) to a digital information. The
architecture of the gesture engine features automatic activation (based on Proximity engine results), ambient light
subtraction, cross-talk cancellation, dual 8-bit data converters, power saving inter-conversion delay, 32-dataset
FIFO, and interrupt driven I2C communication. The gesture engine accommodates a wide range of mobile device
gesturing requirements: simple UP-DOWN-RIGHT-LEFT gestures or more complex gestures can be accurately
sensed. Power consumption and noise are minimized with adjustable IR LED timing.
2.5.2 Proximity Detection
The Proximity detection feature provides distance measurement (E.g. mobile device screen to user’s ear) by
photodiode detection of reflected IR energy (sourced by the integrated LED). Detect/release events are interrupt
driven, and occur whenever proximity result crosses upper and/ or lower threshold settings. The proximity engine
features offset adjustment registers to compensate for system offset caused by unwanted IR energy reflections
appearing at the sensor. The IR LED intensity is factory trimmed to eliminate the need for end-equipment
calibration due to component variations. Proximity results are further improved by automatic ambient light
subtraction.

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2.5.3 Color and ALS Detection
The Color and ALS detection feature provides red, green, blue and clear light intensity data. Each of the R, G, B, C
channels have a UV and IR blocking filter and a dedicated data converter producing16-bit data simultaneously. This
architecture allows applications to accurately measure ambient light and sense color which enables devices to
calculate color temperature and control display backlight.
2.6 Digital Microphone
The MP34DT06JTR is an ultra-compact, low-power, omnidirectional, digital MEMS microphone built with a
capacitive sensing element and an IC interface.
The sensing element, capable of detecting acoustic waves, is manufactured using a specialized silicon
micromachining process dedicated to produce audio sensors
2.7 Power Tree
The board can be powered via USB connector, VIN or VUSB pins on headers.

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Power tree
NOTE: Since VUSB feeds VIN via a Schottky diode and a DC-DC regulator specified minimum input voltage is 4.5V the
minimum supply voltage from USB has to be increased to a voltage in the range between 4.8V to 4.96V depending
on the current being drawn.

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3 Board Operation
3.1 Getting Started - IDE
If you want to program your Arduino Nano 33 BLE Sense Rev2 while offline you need to install the Arduino Desktop
IDE [1] To connect the Arduino Nano 33 BLE Sense Rev2 to your computer, you’ll need a Micro-B USB cable. This
also provides power to the board, as indicated by the LED.
3.2 Getting Started - Arduino Web Editor
All Arduino boards, including this one, work out-of-the-box on the Arduino Web Editor, 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 to start coding on the browser and upload your sketches onto your board.
3.3 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.
3.4 Sample Sketches
Sample sketches for the Arduino Nano 33 BLE Sense Rev2 can be found either in the “Examples” menu in the
Arduino IDE or in the “Documentation” section of the Arduino Pro website.
3.5 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, the Arduino Library Reference and the on line
store where you will be able to complement your board with sensors, actuators and more.

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3.6 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.
4 Connector Pinouts
Pinout

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4.1 USB
Pin Function Type Description
1 VUSB Power Power Supply Input. If board is powered via VUSB from header this is an Output
(1)
2 D- Differential USB differential data -
3 D+ Differential USB differential data +
4 ID Analog Selects Host/Device functionality
5 GND Power Power Ground
4.2 Headers
The board exposes two 15 pin connectors which can either be assembled with pin headers or soldered through
castellated vias.
Pin Function Type Description
1 D13 Digital GPIO
2 +3V3 Power Out Internally generated power output to external devices
3 AREF Analog Analog Reference; can be used as GPIO
4 A0/DAC0 Analog ADC in/DAC out; can be used as GPIO
5 A1 Analog ADC in; can be used as GPIO
6 A2 Analog ADC in; can be used as GPIO
7 A3 Analog ADC in; can be used as GPIO
8 A4/SDA Analog ADC in; I2C SDA; Can be used as GPIO (1)
9 A5/SCL Analog ADC in; I2C SCL; Can be used as GPIO (1)
10 A6 Analog ADC in; can be used as GPIO
11 A7 Analog ADC in; can be used as GPIO
12 VUSB Power
In/Out
Normally NC; can be connected to VUSB pin of the USB connector by shorting a
jumper
13 RST Digital In Active low reset input (duplicate of pin 18)
14 GND Power Power Ground
15 VIN Power In Vin Power input
16 TX Digital USART TX; can be used as GPIO
17 RX Digital USART RX; can be used as GPIO
18 RST Digital Active low reset input (duplicate of pin 13)
19 GND Power Power Ground
20 D2 Digital GPIO
21 D3/PWM Digital GPIO; can be used as PWM
22 D4 Digital GPIO
23 D5/PWM Digital GPIO; can be used as PWM
24 D6/PWM Digital GPIO, can be used as PWM
25 D7 Digital GPIO
26 D8 Digital GPIO
27 D9/PWM Digital GPIO; can be used as PWM
28 D10/PWM Digital GPIO; can be used as PWM
29 D11/MOSI Digital SPI MOSI; can be used as GPIO

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Pin Function Type Description
30 D12/MISO Digital SPI MISO; can be used as GPIO
4.3 Debug
On the bottom side of the board, under the communication module, debug signals are arranged as 3x2 test pads
with 100 mil pitch with pin 4 removed. Pin 1 is depicted in Figure 3 – Connector Positions
Pin Function Type Description
1 +3V3 Power Out Internally generated power output to be used as voltage reference
2 SWD Digital nRF52480 Single Wire Debug Data
3 SWCLK Digital In nRF52480 Single Wire Debug Clock
5 GND Power Power Ground
6 RST Digital In Active low reset input
5 Mechanical Information
5.1 Board Outline and Mounting Holes
The board measures are mixed between metric and imperial. Imperial measures are used to maintain 100 mil pitch
grid between pin rows to allow them to fit a breadboard whereas board length is Metric
Board layout

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6 Certifications
6.1 Declaration of Conformity CE DoC (EU)
We declare under our sole responsibility that the products above are in conformity with the essential requirements
of the following EU Directives and therefore qualify for free movement within markets comprising the European
Union (EU) and European Economic Area (EEA).
6.2 Declaration of Conformity to EU RoHS & REACH 211 01/19/2021
Arduino boards are in compliance with RoHS 2 Directive 2011/65/EU of the European Parliament and RoHS 3
Directive 2015/863/EU of the Council of 4 June 2015 on the restriction of the use of certain hazardous substances in
electrical and electronic equipment.
Substance Maximum limit (ppm)
Lead (Pb) 1000
Cadmium (Cd) 100
Mercury (Hg) 1000
Hexavalent Chromium (Cr6+) 1000
Poly Brominated Biphenyls (PBB) 1000
Poly Brominated Diphenyl ethers (PBDE) 1000
Bis(2-Ethylhexyl} phthalate (DEHP) 1000
Benzyl butyl phthalate (BBP) 1000
Dibutyl phthalate (DBP) 1000
Diisobutyl phthalate (DIBP) 1000
Exemptions : No exemptions are claimed.
Arduino Boards are fully compliant with the related requirements of European Union Regulation (EC) 1907 /2006
concerning the Registration, Evaluation, Authorization and Restriction of Chemicals (REACH). We declare none of
the SVHCs (https://echa.europa.eu/web/guest/candidate-list-table), the Candidate List of Substances of Very High
Concern for authorization currently released by ECHA, is present in all products (and also package) in quantities
totaling in a concentration equal or above 0.1%. To the best of our knowledge, we also declare that our products
do not contain any of the substances listed on the "Authorization List" (Annex XIV of the REACH regulations) and
Substances of Very High Concern (SVHC) in any significant amounts as specified by the Annex XVII of Candidate list
published by ECHA (European Chemical Agency) 1907 /2006/EC.

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6.3 Conflict Minerals Declaration
As a global supplier of electronic and electrical components, Arduino is aware of our obligations with regards to
laws and regulations regarding Conflict Minerals, specifically the Dodd-Frank Wall Street Reform and Consumer
Protection Act, Section 1502. Arduino does not directly source or process conflict minerals such as Tin, Tantalum,
Tungsten, or Gold. Conflict minerals are contained in our products in the form of solder, or as a component in
metal alloys. As part of our reasonable due diligence Arduino has contacted component suppliers within our supply
chain to verify their continued compliance with the regulations. Based on the information received thus far we
declare that our products contain Conflict Minerals sourced from conflict-free areas.
7 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 the following two conditions:
(1) This device may not cause harmful interference
(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.
English: User manuals for license-exempt radio apparatus shall contain the following or equivalent notice in a
conspicuous location in the user manual or alternatively on the device or both. This device complies with Industry
Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:
(1) this device may not cause interference
(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
(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:
English 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.

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Important: The operating temperature of the EUT can’t exceed 85℃ and shouldn’t be lower than -40℃.
Hereby, Arduino S.r.l. declares that this product is in compliance with essential requirements and other relevant
provisions of Directive 2014/53/EU. This product is allowed to be used in all EU member states.
Frequency bands Maximum output power (ERP)
863-870Mhz TBD
8 Company Information
Company name Arduino S.r.l
Company Address Via Andrea Appiani 25 20900 MONZA Italy
9 Reference Documentation
Reference Link
Arduino IDE (Desktop) https://www.arduino.cc/en/software
Arduino IDE (Cloud) https://create.arduino.cc/editor
Cloud IDE Getting
Started
https://create.arduino.cc/projecthub/Arduino_Genuino/getting-started-with-arduino-
web-editor-4b3e4a
Forum http://forum.arduino.cc/
Nina B306 https://content.u-blox.com/sites/default/files/NINA-B3_DataSheet_UBX-17052099.pdf
Arduino_LPS22HB
Library https://github.com/arduino-libraries/Arduino_LPS22HB
Arduino_APDS9960
Library https://github.com/arduino-libraries/Arduino_APDS9960
ProjectHub https://create.arduino.cc/projecthub?by=part&part_id=11332&sort=trending
Library Reference https://www.arduino.cc/reference/en/

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10 Revision History
Date Revision Changes
10/11/2022 3 Updated to account for Rev2 changes: LSM9DS1 -> BMI270+Bmm150, HTS221 ->
HS3003, MPM3610 -> MP2322, PCB modification
08/03/2022 2 Reference documentation links updates
04/27/2021 1 General datasheet updates