Arduino Nano 33 BLE
Information on the ABX00030 SKU
Last updated
Information on the ABX00030 SKU
Last updated
Somebody may think that information on the Arduino Nano 33 BLE board should be clear and exact. It turns out that this is not exactly so. I will speak about the ABX00030 variant on this page. Here is the datasheet from the Arduino web site:
Processor on the board:
64 MHz Arm® Cortex-M4F (with FPU)
1 MB Flash + 256 KB RAM
This manual gives this picture of the board:
The picture above matches what I ordered and received exactly. The manual is also giving this schematic diagram:
If you will look carefully, you will see that these two boards differ in details. Manual mentions the following elements on the diagram:
U1
NINA-B306
Main CPU, Bluetooth 5.0 Module
U2
LSM9DS1TR
The 9-axis IMU (Accelerometer, Gyroscope, Magnetometer)
U6
MP2322GQH
Synchronous Step-Down Converter, 1A Load Current
L2
Inductor
3.3 micro henry
Arduino site also contains the following circuit diagram:
Below is the same diagram in the form of a picture (with little bit improved readability):
Elements from this circuit diagram:
U1 A,B
NINA-B3X
Main CPU, Bluetooth 5.0 Module
U2
LSM9DS1
The 9-axis IMU (Accelerometer, Gyroscope, Magnetometer)
U3
MP34DT06JTR
Omnidirectional Digital Microphone
U4 A,B
--
Crypto Auth (it is not clear what is that)
U5
APDS-9960
Proximity, Ambient Light, RGB and Gesture Sensor
LPS-1
LPS22
Pressure Sensor
IC1
MPM3610
Synchronous Step-Down Converter with Integrated Inductor
IC2
HTS221
Humidity and Temperature Sensor
As you can see, several ICs, mentioned on the circuit diagram are not installed on the board plus some of them may not even have pads on the PCB.
Most important takeaways from this diagram:
Only the U1, U2 and IC1 are installed. Just these 3 ICs. Not any other
The step down power convertor is MPM3610. I can read "3610" on the chip if looking closely.
There is no inductor on the boards as it is integrated into the voltage regulator chip
All LEDs are software driven. None of the LEDs are are driven by the hardware.
These notes are written in January 2023. It may happen that details described above will change.
