Arduino Nano 33 BLE Sense - Processor; Crypto; Imu; Barometer and Temperature Sensor

Arduino® Nano 33 BLE Sense
6 / 12 Arduino® Nano 33 BLE Sense / Rev. 01 - 03/12/2021
Board topology bot
Ref. Description Ref. Description
SJ1 VUSB Jumper SJ2 D7 Jumper
SJ3 3v3 Jumper SJ4 D8 Jumper
1.6 Processor
The Main Processor is a 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 I
2
C 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 I
2
C Bus so usage as analog inputs is not
recommended.
1.7 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 [8]
1.8 3.4 IMU
Arduino Nano 33 BLE has an embedded 9 axis IMU which can be used to measure board orientation (by checking the gravity acceleration vector orientation or by using the
3D compass) or to measure shocks, vibration, acceleration and rotation speed.
Source code for the Arduino Library that supports the IMU is available [9]
1.9 Barometer and Temperature Sensor
The embedded Barometer and temperature sensor allow measuring ambient pressure. The temperature sensor integrated with the barometer can be used to compensate
the pressure measurement.
Source code for the Arduino Library that supports the Barometer is available [10]