nRF54L15

Next-generation ultra-low-power Bluetooth 5.4 SoC with RISC-V and ARM Cortex-M33 cores. Designed for ultra-constrained battery-powered devices.

Full Zephyr RTOS / nRF Connect SDK support. FirmwareMaestro generates Zephyr-native projects (prj.conf, CMakeLists.txt, Devicetree overlays) targeting this MCU.

Next-generation ultra-low-power Bluetooth 5.4 SoC with RISC-V and ARM Cortex-M33 cores. Designed for ultra-constrained battery-powered devices.

Specifications

Spec	Value
Flash	1.5MB
Ram	256KB
Core	ARM Cortex-M33 + RISC-V
MaxClock	128 MHz
Gpio	32

Wireless Protocols

ble, 802.15.4, 2.4ghz-proprietary

Hardware Features

arm-cortex-m33, risc-v, ultra-low-power, tamper-detection, cracen-security

Vendor

Nordic Semiconductor — SDKs: nRF Connect SDK, Zephyr RTOS

Recommended Use Cases

BLE Fitness Tracker

Wearable fitness device that tracks activity, heart rate, and sleep patterns over Bluetooth Low Energy, syncing data to a companion mobile app.

BLE Audio Device

Bluetooth LE Audio device supporting LC3 codec, Auracast broadcast audio, and hearing aid compatibility for next-generation wireless audio products.

Medical Wearable

Clinical-grade wearable device for continuous health monitoring including ECG, SpO2, and body temperature, with secure data transmission to healthcare systems.

Ready-Made Solutions

nRF54L15 BLE Fitness Tracker

Build an ultra-low-power BLE fitness tracker with the nRF54L15 — leveraging CRACEN hardware security, RISC-V co-processor for always-on sensing, and BLE 5.4 for multi-day battery life.

nRF54L15 Secure Smart Lock

Build a next-generation secure smart lock with the nRF54L15 — CRACEN hardware crypto for secure BLE key management, tamper detection peripherals, and years of battery life on 2xAA cells.