BL54L15 Series - Bluetooth LE + 802.15.4 + NFC

Our BL54L15 module, based on the nRF54L15 SoC, has undergone updates to its pin and power supply configuration across different hardware versions. Pin 40 (VDD_nRF) has been removed and replaced by Pin 26 (VDDM_nRF). In current hardware revisions and reference designs, the pin formerly designated as VDDM_nRF, which served as the primary power supply, is now referred to as VDD_nRF. For all new designs, VDD_nRF must be used as the main power source instead of VDDM_nRF.

Note: Preliminary engineering samples featured a 40-pin footprint, while mass production versions from revision 3.0 onward use a 39-pin layout. The version number is printed on the module’s silkscreen, as illustrated in the example below — highlighted in red for clarity and easy identification. This change also applies to all related development boards and reflects Nordic’s decision to remove support for the medium voltage mode, which was only present in alpha and beta silicon versions.

Moving forward, normal voltage mode must be implemented and strictly followed. For the most up-to-date information on the operating voltage range for VDD_nRF, please refer to the latest BL54L15 datasheet available on our website: https://www.ezurio.com/documentation/datasheet-bl54l15-series.

Please reference the Nordic Migration Guide for nRF Connect SDK v2.8.0 for the required changes to use the nRF Connect SDK in VS Code with the BL54 series modules.

https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/releases_and_maturity/migration/migration_guide_2.8.html

Be sure to reference the requirements for the specific board based on the chipset. 

Note: If you are using a BL54H20 engineering DVK, based on Rev B silicon, you MUST follow the steps for Rev B silicon. Then select the nrf54h20dk/nrf54h20dk/cpuapp as the board target and set the Revision to 0.8.0.

Ezurio did provide breakout boards for our older BL600(EOL) modules but we do not produce breakout boards for any of our current range of Bluetooth modules as of 2024.

This includes all BL65x, BL53xx, BL54xxx, BTxxx, Vela and Lyra modules.

We do provide development kits for all of our module offerings. To learn more, visit any product page on ezurio.com.