Product details


Frequency 2379-2496 MHz Standard Proprietary 2.4 GHz Operating temperature range (C) -40 to 125 Rating Catalog Transmission principle GFSK, MSK open-in-new Find other Other wireless technologies

Package | Pins | Size

VQFN (RHB) 32 25 mm² 5 x 5 open-in-new Find other Other wireless technologies


  • RF section
    • Single-Chip 2.4-GHz RF Transceiver and MCU
    • Data Rates and Modulation Formats:
      • 2-Mbps GFSK, 320-kHz Deviation
      • 2-Mbps GFSK, 500-kHz Deviation
      • 1-Mbps GFSK, 160-kHz Deviation
      • 1-Mbps GFSK, 250-kHz Deviation
      • 500-kbps MSK
      • 250-kbps GFSK, 160-kHz Deviation
      • 250-kbps MSK
    • Excellent Link Budget, Enabling Long Range
      Without External Front-Ends
    • Programmable Output Power up to 4 dBm
    • Excellent Receiver Sensitivity (–88 dBm at 2 Mbps)
    • Suitable for Systems Targeting Compliance With
      Worldwide Radio Frequency Regulations:
      ETSI EN 300 328 and EN 300 440 Category 2 (Europe),
      FCC CFR47 Part 15 (US), and ARIB STD-T66 (Japan)
    • Accurate RSSI Function
  • Layout
    • Few External Components
    • Reference Designs Available
    • 32-pin 5-mm × 5-mm QFN (8 General I/O Pins) Package
  • Low Power
    • Active Mode RX: 22.5 mA
    • Active Mode TX (0 dBm): 27 mA
    • Power Mode 1 (4-µs Wake-Up): 1 mA
    • Wide Supply-Voltage Range
      • 3.3V LDO Output
      • Supply Range: 2 V–3.6 V
      • USB 5-V Regulator: 4 V–5.45 V
  • Microcontroller
    • High-Performance and Low-Power 8051 Microcontroller Core With Code Prefetch
    • 32-KB Flash Program Memory
    • 2 KB SRAM
    • Hardware Debug Support
    • Extensive Baseband Automation, Including Auto-Acknowledgement and Address Decoding
  • Peripherals
    • Full Speed USB 2.0
      • 6 Endpoints (Endpoint 0 and 5 IN/OUT Endpoints)
      • Internal Pullup for D+
      • 5-V to 3.3-V Regulator
    • Powerful Two-Channel DMA
    • General-Purpose Timers (One 16-Bit, Two 8-Bit)
    • Radio Timer, 40-Bit
    • IR Generation Circuitry
    • Several Oscillators:
      • 32-MHz XOSC
      • 16-MHz RCOSC
      • 32-kHz RCOSC
    • 32-kHz Sleep Timer With Capture
    • AES Security Coprocessor
    • UART/SPI Serial Interface
    • 8 General-Purpose I/O pins (6 × 4-mA and 2 × 20-mA Drive Strength)
    • Watchdog Timer
    • True Random-Number Generator
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The CC2544 is an optimized system-on-chip (SoC) solution for USB applications with datarates upto 2Mbps built with low bill-of-material cost. The CC2544 combines the excellent performance of a leading RF transceiver with a single-cycle 8051 compliant CPU, 32-KB in-system programmable flash memory, up to 2-KB RAM, and many other powerful features.

The CC2544 is compatible with the CC2541/CC2543/CC2545. It comes in a 5-mm × 5-mm QFN32 package, with SPI/UART/USB interface. The CC2544 comes complete with reference designs from Texas Instruments.

The devices target wireless consumer and HID applications. The CC2544 is ideal for USB dongle applications.

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Technical documentation

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Type Title Date
* Data sheet CC2544 System-on-Chip for 2.4-GHz USB Applications datasheet (Rev. D) May 03, 2012
* Errata CC2544 ERRATA NOTE Mar. 28, 2012
* User guide CC2543, CC2544, CC2545 System-on-Chip Solution for 2.4-GHz Apps User's Guide (Rev. B) Mar. 18, 2013
Technical article Wireless M-Bus 101: Demystifying modes and regional application profiles Jul. 02, 2021
Application note CE Regulations for SRDs Operating in License-Free 2.4GHz/5GHz Bands-WiFi Devices Apr. 15, 2020
Technical article Bluetooth® Low Energy shifts gears for car access Jul. 15, 2019
Technical article An out-of-the-box Internet of Things: building a seamless and secure smart home network Jun. 12, 2018
Technical article Thread vs. Zigbee – what’s the difference? May 16, 2018
Application note Autonomous high density streaming protocol Aug. 06, 2013
User guide CC2543/44/45 Development Kit User’s Guide (Rev. B) Jun. 06, 2013
Application note AN081 -- Johanson Technology Balun Optimized for CC253X, CC254X, CC257X, CC853X (Rev. B) Nov. 06, 2012
Application note AN118 -- Flash programming of CC253x/4x devices Sep. 05, 2012
Application note AN098 - Layout Review Techniques for Low Power RF Designs (Rev. A) Aug. 02, 2012

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The CC Debugger is a small programmer and debugger for the TI Low Power RF System-on-Chips. It can be used together with IAR Embedded Workbench for 8051 (version 7.51A or later) for debugging and SmartRF Flash Programmer for flash programming. The CC Debugger can also be used for controlling (...)


Contents in the box:

  • CC Debugger
  • Mini USB cable
  • 10-pin flat cable with 2x5 2.54mm connector
  • 10-pin flat cable with 2x5 1.27mm connector
  • Converter board 2.54mm-1.27mm connector
  • Documentation

CC-Debugger can be used to program and debug the following 8051-based system-on-chips from Texas Instruments:

  • CC1110 (...)

Software development

SWRC257.ZIP (763 KB)
SWRC251B.ZIP (232 KB)

Design tools & simulation

SmartRF Studio
SMARTRFTM-STUDIO SmartRF™ Studio is a Windows application that helps designers of RF systems to easily evaluate the radio at an early stage in the design process for all TI CC1xxx and CC2xxx low-power RF devices. It simplifies generation of the configuration register values and commands, as well as practical (...)
document-generic User guide
  • Link tests. Send and Receive packets between nodes.
  • Antenna and radiation tests. Set the radio in continuous wave TX and RX states.
  • A set of recommended/typical register settings for all devices.
  • Read and write individual RF registers.
  • Execute individual commands to control the radio.
  • Detailed (...)
Hardware design reviews for SimpleLink™ CC2xxx devices
SIMPLELINK-2-4GHZ-DESIGN-REVIEWS The SimpleLink hardware design review process provides a way to get in touch, one-on-one, with a subject matter expert that can help review your design and provide valuable feedback. A simple 3-step process for requesting a review as well as links to relevant technical documentation and resources (...)

CAD/CAE symbols

Package Pins Download
VQFN (RHB) 32 View options

Ordering & quality

Information included:
  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

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