2.4GHz RF System-on-Chip (SoC) with Flash and USB
Not recommended


This product is not recommended for new designs. Nordic recommends the nRF24LU1+.

The Nordic nRF24LU1 is a highly integrated, ultra low power 2.4GHz RF System-on-Chip (SoC) for the 2.4GHz ISM (Industrial, Scientific and Medical) band. It includes a 2.4GHz RF transceiver core, 8-bit CPU, Full-speed USB 2.0 device controller, and embedded Flash memory. With an integrated voltage regulator enabling it to be powered directly from the USB VBUS, the nRF24LU1 is ideally suited for ultra compact USB dongles for wireless peripherals. The on-chip Flash can also be upgraded over the USB interface enabling easy deployment of bug fixes and new features to end-users.

The Nordic nRF24LU1 integrates a Nordic nRF24L01 2.4GHz RF transceiver core, enhanced 16MHz 8-bit 8051 compatible CPU, 2kB + 256B RAM, 16kB embedded Flash, a Full-speed USB 2.0-compliant device controller, and a range of system peripherals including a hardware AES co-processor and PWM.

The nRF24LU1 is available in a 5 x 5mm 32-pin QFN package with 6 generic I/O pins.


  • Single chip solution for compact 2.4GHz USB dongles
  • Low cost BoM – powers directly from USB VBUS and supports
    use of a single, low cost 16MHz ±60ppm crystal
  • Integrates Nordic nRF24L01+ radio core, enhanced 8051 CPU, 16KB Flash, and Full-speed USB 2.0-compliant device controller
  • Supports firmware upgrades over USB for easy deployment of new features and bug fixes to end-users
  • On-air compatible with all Nordic nRF24L Series in 1 and 2Mbps mode
  • On-air compatible with Nordic nRF24E and nRF240 Series in 1Mbps mode


  • Compact USB dongles for 2.4GHz RF wireless peripherals
  • Embedded 2.4GHz RF wireless connectivity

Related Products


Ordering codes



The Nordic nRF24LU1 is a highly integrated, ultra low power (ULP) 2.4GHz RF System-on-Chip (SoC) for the 2.4GHz ISM (Industrial, Scientific and Medical) band.

Low power consumption

  • 480µA standby mode
  • 4.5mA USB active
  • 6mA active mode with CPU at 16MHz
  • 11mA Radio TX at 0dBm
  • 12mA Radio RX at 2Mbps on-air data-rate


2.4GHz Radio

  • 2.4GHz ISM band operation
  • GFSK modulation, 1 or 2MHz bandwidth
  • 0, -6, -12, and -18dBm programmable TX output power
  • Configurable on-air data rate of 1Mbps or 2Mbps
  • -82dBm RX sensitivity at 2Mbps
  • -85dBm RX sensitivity at 1Mbps
  • Compatible with a 16MHz ±60ppm crystal


Enhanced ShockBurst™ hardware protocol accelerator

  • Automatic packet assembly
    (Preamble, Address, CRC)
  • Automatic packed detection and validation
  • Dynamic payload length, 1 to 32Bytes
  • Auto retransmit
  • Auto Acknowledgment with optional payload
  • 6 data pipe MultiCeiver™
  • 3 separate 32Byte TX and RX FIFOs


Processor and Memory

  • 8-bit enhanced 8051 CPU
  • Reduced instruction cycle time
  • Up to 16MHz operation
  • 32-bit multiplication/division unit
  • 2KB SRAM + 256B IRAM
  • 16KB program Flash


USB Device Controller

  • Full-speed USB 2.0 compliant
  • Up to 12Mbps
  • 5 input and 5 output Bulk/Interrupt endpoints
  • 1 input and 1 output double buffered iso-synchronous endpoints
  • Endpoint 0 for control
  • 512B endpoint RAM
  • On-chip programmable pull-up resistor for D+


Oscillators, PLLs and Timers

  • 16MHz XO
  • 48MHz PLL
  • 24-bit RTC
  • 3x 16-bit timer/counters


System Peripherals

  • 128-bit AES co-processor


Digital I/O

  • SPI Master/Slave
  • UART



  • 6 GPIO pins
  • Configurable type, direction, drive strength, and pull up/down
  • Configurable pin to I/O peripheral assignment


Power supply

  • Internal linear voltage regulator
  • 4.0 to 5.25V supply range
  • Powers directly from USB VBUS


Temperature range of -40 to +80 ºC

Package options

  • 32-pin 5 x 5mm QFN

Product Specification

Code Name Version
nRF24LU1-PS nRF24LU1 Product Specification 1.1
PAN-006 nRF24LU1 Product Anomaly Notice Build CX 1.0
PAN-008 nRF24LU1 Product Anomaly Notice Build E 1.0
PCN-059 Product Change Notification - Cu as additional bond wire option 1.0
PCN-075 Product Change Notification 1_0
PCN-094 Change on outer box container for trays and 7” reels 1.0


PC software
To aid your product development, Nordic also offers a range of tools enabling you to interact with and monitor your product


Code Name Version nRFUtil tool modified with changes needed for Thread DFU zip file 2.1.0dev2

Application Notes

Code Name Version
nAN-15 Creating Applications with the Keil C51 C Compiler 1.1
nAN-20 Using external, non-volatile memory with the nRF24LE1 [Firmware included] 1.0
nAN24-12 Software examples using ShockBurst modes in nRF24L01 and nRF24LU1 2.1
nAN24-14 Using flash devices as development platforms for OTP devices 1.0
nAN400-08 QFN Soldering Reflow Guidelines 1.2

White Papers

Code Name Version
nWP-001 Benefits of Total Integration of Large RF Circuits
nWP-005 Introduction to wireless networks
nWP-006 nRF Performance Test Guidelines 1.0
nWP-008 Quarterwave printed monopole antenna for 2.4GHz
nWP-010 Regulatory and Compliance Standards for RF Devices
nWP-011 Sharing crystal with a microcontroller (MCU) 1.1
nWP-013 Tuning the nRF24xx matching network
nWP-014 USB Certification Guidelines
nWP-015 Crystal Oscillator Design Considerations
nWP-017 Antenna tuning 1.0