2.4GHz RF Transceiver

General Description

SPRF24B01A is a GFSK transceiver operating in the world wide ISM frequency band at 2400-2483.5 MHz. Burst mode transmission and up to 2Mbps air data rate make them suitable for applications requiring ultralow power consumption. The embedded packet processing engines enable their full operation with a very simple MCU as a radio system. Auto re-transmission and auto acknowledge give reliable link without any MCU interference. SPRF24B01A operates in TDD mode, either as a transmitter or as a receiver.
The RF channel frequency determines the center of the channel used by SPRF24B01A. The frequency is set by the RF_CH register in register bank 0 according to the following formula: F0= 2400 + RF_CH (MHz). The resolution of the RF channel frequency is 1MHz.
A transmitter and a receiver must be programmed with the same RF channel frequency to be able to communicate with each other.
The output power of SPRF24B01A is set by the RF_PWR bits in the RF_SETUP register. Demodulation is done with embedded data slicer and bit recovery logic. The air data rate can be programmed to 250Kbps, 1Mbps or 2Mbps by RF_DR_HIGH and RF_DR_LOW register. A transmitter and a receiver must be programmed with the same setting.
In the following chapters, all registers are in register bank 0 except with explicit claim.


  • ISM Band Operation (2400MHz~2483.5MHz)
  • 1.9 to 3.6V supply range
  • Support 250K,1M and 2Mbps air data rate
  • Programmable TX output power
  • 4-pin SPI interface with maximum 8 MHz clock rate
  • Variable payload length from 1 to 32bytes
  • Automatic packet processing
  • 6 data pipes for 1:6 star networks
  • Compact 20-pin 4x4mm QFN package


  • Wireless mouse, keyboard, gamepad and Presenter
  • Wireless audio
  • Wireless VOIP and headsets
  • Remote controls
  • Home Automation
  • Industrial networks
  • Interactive toys
  • Personal health and entertainment

Product Solutions

SunplusIT offer a series of comprehensive ASSP & ASIC product solutions with on-site engineering supports targeting Human Interface Devices, Industry Control, PC External HDD/ODD Drives and PC/NB Camera market segments.

MCU Solutions
  • Wired Optical Mouse
  • Wireless Desktop (Keyboard & Mouse)
  • MCU for HID & Toy Devices

Image Solutions
  • Web camera controllers
  • NB camera controllers




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