Interface nRF21540 FEM with nRF5340 a new design.

[KarthikKumar]

Hi All,

I'm in process of designing a system which has nRF21540 as the FEM and nRF340 as the chipset, But finding it hard to configure. Can some one help me hoe to connect both and create a new design.

Regards

Karthik Kumar

[Martin Sivertsen]

Hello Karthik,

When you say you find it hard to configure, what do you mean specifically?

When you say connect both, do you mean in a schematic or on a PCB?

And when you say help to create a new design, what's the scope of this request?

We have an infocenter with product specification for all our chips as well as erratas, white papers etc.

Here is the specific page for nRF5340: https://infocenter.nordicsemi.com/topic/ps_nrf5340/keyfeatures_html5.html?cp=3_0_0

Here is a page with reference schematics for the two package types (QKAA and CLAA) of the nRF5340: https://infocenter.nordicsemi.com/topic/ps_nrf5340/chapters/ref_circuitry.html?cp=3_0_0_8_2

Here is PCB layout files for the nRF5340 you can copy (and please follow closely): https://www.nordicsemi.com/Products/nRF5340/Downloads#infotabs

Here is the product specification for nRF21540: https://infocenter.nordicsemi.com/topic/struct_fem/struct/nrf21540.html?cp=7_0

Here is the PCB layout files for the nRF21540, please copy exactly: https://www.nordicsemi.com/Products/nRF21540/Downloads#infotabs

Let us know how we can help.

Best regards,

Martin S.

[KarthikKumar]

Hi Martin,

I'm planning to connect an sensor to the nRF5340 chipset, which shall sense the motion and position of an object, that is an accelerometer and magnetometer sensors. How can I connect this? 

Regards

Karthik Kumar

[Martin Sivertsen]

Hi,

Are you going to include them on the same PCB or are they on separate breakout boards?

Either way, most accelerometers and magnetometers usually communicate using I2C (Nordic uses TWI (Two-wire interface) which is the same thing) or SPI, and you can use any GPIO on the nRF5340 to set up this communication.

Best regards,

Martin S.