Product Data Sheet

Bottom:
Ref.
Description
Ref.
Description
SJ1
VUSB Jumper
SJ2
D7 Jumper
SJ3
3v3 Jumper
SJ4
D8 Jumper
3.2 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.
3.3 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]
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.