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nRF54LM20A System-on-Chip

Ultra-low-power wireless SoC

The nRF54LM20A is part of the nRF54L Series, together with the nRF54L15, nRF54L10, and nRF54L05. All wireless SoCs in the Series integrate an ultra-low-power 2.4 GHz radio and MCU with a 128 MHz Arm Cortex-M33 processor, a comprehensive peripheral set, and scalable memory configuration. The series offers a selection of packages and memory size options with CSP and QFN packages.

Nordic’s proprietary technologies, such as low-leakage RAM and advanced multiprotocol radio design, enable ultra-low power consumption, reducing battery size or increasing lifetime.

nRF54LM20A is suitable for products using Bluetooth LE, Channel Sounding introduced in Bluetooth 6.0, Thread, Matter, Zigbee, and proprietary 2.4 GHz protocols with up to 4 Mbps data rate. In addition, it can run a Wi-Fi stack for the nRF70 Series companion ICs.

The nRF54LM20A is the largest memory option in the series with 2 MB NVM and 512 KB RAM. It features high-speed USB, extended peripheral set and up to 66 GPIOs.

Key Features
  • Ultra-low-power multiprotocol 2.4 GHz radio
  • Integrated multi-purpose MCU functionality
  • 128 MHz Arm Cortex-M33 processor
  • 2 MB NVM and 512 KB RAM
  • High-Speed USB
  • Comprehensive set of peripherals, including new Global RTC available in System OFF, 14-bit ADC, and high-speed serial interfaces
  • Secure boot, secure firmware update, secure storage
  • Cryptographic accelerator with side-channel leakage protection, tamper detectors
Documentation
Datasheet

Reference layout

FCCSP package

Selected version
0.5

Changelog:

0.5

  • Pad D1 on nRF54LM20 connected to GND on top layer
  • Removed thermal relief on C3, C12 and C13

0.4

  • C9 removed
  • L5 and C8 added
  • L2 changed to 3.6nH
  • L3 changed to 4.7nH
  • L4 changed to 2.2nH
  • C3 and C12 changed to 1.2pF
  • C13 changed to DNM
  • C6 changed to 4.7µF
  • R2 changed to 200ohm
  • Updated component placement on C8, C14, L5 ,FB2 and X2 to match the schematic
  • Removed GND on inner layers below the 50 ohm impedance trace

0.3