Press Backgrounders

About nRF24LU1™



The nRF24LU1 is a single chip solution for compact USB dongles for wireless peripherals. It provides native support for up to five bidirectional ultra-low power (ULP) wireless peripherals communicating simultaneously via a single, ultra-compact full-speed USB 2.0-compliant dongle.


The nRF24LU1 offers full interoperability with the nRF24L01 2Mbps 2.4GHz transceiver and its Enhanced ShockBurst hardware link layer, and integrates a full-speed USB 2.0-compliant device controller, an 8051 compatible microcontroller, a hardware AES security co-processor and 16 kBytes of flash memory. The nRF24LU1 is supplied in a 5 by 5mm QFN package.


With an internal voltage regulator (covering a 4.0 to 5.25V supply range) that enables the chip to be powered directly from the USB bus, the nRF24LU1 does not require an external voltage regulator, saving cost and board space. With a fully integrated RF synthesizer and PLL for the USB no external loop filters, resonators or VCO varactor diodes are required, only a low cost ±60ppm 16MHz crystal, matching circuitry and the antenna.


The nRF24LU1 features 6 general-purpose digital input/output pins, hardware SPI slave & master (UART) and three 16-bit timers/counters. It supports firmware upgrade over USB and a FS2 hardware debugger. In addition, the nRF24LU1 is air compatible with the nRF24L01, nRF2401A, 02, E1 and E2.


The AES encryption co-processor provides industry standard data encryption and decryption at the application level, and the on-chip flash memory features fully configurable write and read back protection, offering complete protection from reverse engineering.


With air data rate of 2 Mbps combined with full speed USB, supporting up to 12 Mbps, the nRF24LU1 meets performance requirements of a wide range of applications including PC peripherals, sports accessories and game peripherals.