Nordic Semiconductor — nRF54LM20 Wireless SoC

The nRF54L series are ultra-low-power wireless SoCs supporting multiple communications protocols operating in the 2.4GHz band, enabling products using Bluetooth® Low Energy, Bluetooth Mesh, Zigbee, Thread, Matter, Amazon Sidewalk, and proprietary 2.4GHz protocols. 

The nRF54LM20A and nRF54LM20B offer the largest memory capacity at 2Mbytes of non-volatile memory and 512kbytes of RAM, fit for the most demanding use cases. Both SoC variants in the series integrate a multi-protocol 2.4GHz radio and microcontroller functionality based on a 128MHz Arm® Cortex®-M33 processor.

Due to an improved radio, stronger processing efficiency thanks to the CPU, and the use of fabrication technologies implemented on a 22nm process node, the nRF54LM20 series is very power-efficient compared to the older nRF52 series.

Both are equipped with the same set of standard peripherals and high-speed serial interfaces. The series features a 14-bit ADC for high-resolution analog sensor measurements, and a global real-time clock capable of running in System OFF mode, drawing just 0.8µA at 3.0V.

An integrated RISC-V co-processor is available to offload time-critical tasks from the main Cortex-M33 processor when it is occupied by protocol stack operations. In some cases, the co-processor can even eliminate the need for an external MCU for real-time functions.

The nRF54LM20B integrates a 128MHz Axon neural processing unit (NPU), a dedicated AI accelerator core allowing it to run machine learning workloads up to 15 times faster using less power compared to running on the primary CPU, and both SoCs include CSP98, CSP61, and QFN52 package options.