System-on-Chip Solution for IEEE 802.15.4 and ZigBee Applications


Other devices and data sheet

Other device variants can also be found in the  CC2531 product page

This data sheet applies to both  CC2531 and  CC2531-RF4CE


The CC2531 is a USB enabled true system-on-chip (SoC) solution for IEEE 802.15.4, ZigBee and RF4CE applications. It enables USB dongles or USB upgradable network nodes to be built with low total bill-of-material costs. The CC2531 combines the performance of a leading RF transceiver with an industry-standard enhanced 8051 MCU, in-system programmable flash memory, 8-KB RAM, and many other powerful features. The CC2531 has various operating modes, making it suited for systems where ultralow power consumption is required. Short transition times between operating modes further ensure low energy consumption. Source code for USB HID and CDC libraries and examples are downloadable from the CC2531 product page on

Combined with the industry-leading and golden-unit-status ZigBee protocol stack (Z-Stack) from Texas Instruments, the CC2531 provides a robust and complete ZigBee USB dongle or firmware upgradable network node.

Combined with the golden-unit-status RemoTI stack from Texas Instruments, the CC2531 provides a robust ZigBee RF4CE remote-control target for USB dongle or TV/STB implementations.


  • RF/Layout
    • 2.4-GHz IEEE 802.15.4 Compliant RF Transceiver
    • Excellent Receiver Sensitivity and Robustness to Interference
    • Programmable Output Power Up to 4.5 dBm
    • Few External Components
    • Only a Single Crystal Needed for Asynchronous Networks
    • 6-mm × 6-mm QFN40 Package
    • Suitable for Systems Targeting Compliance With Worldwide Radio-Frequency
      Regulations: ETSI EN 300 328 and EN 300 440 (Europe), FCC CFR47 Part 15 (US),
      and ARIB STD-T-66 (Japan)
  • USB
    • USB 2.0 Certified Full Speed Device (12 Mbps)
    • 5 Highly Flexible Endpoints
    • 1-KB Dedicated FIFO
    • DMA Access to FIFO
    • No 48-MHz Crystal Required
  • Low Power
    • Active Mode RX (CPU Idle): 24 mA
    • Active Mode TX at 1 dBm (CPU Idle): 29 mA
    • Power Mode 1 (4 µs Wake-Up): 0.2 mA
    • Power Mode 2 (Sleep Timer Running): 1 µA
    • Power Mode 3 (External Interrupts): 0.4 µA
    • Wide Supply-Voltage Range (2 V–3.6 V)
  • Microcontroller
    • High-Performance and Low-Power 8051 Microcontroller Core With Code Prefetch
    • 256-KB or 128-KB In-System-Programmable Flash
    • 8-KB RAM With Retention in All Power Modes
    • Hardware Debug Support 
  • Peripherals
    • Powerful Five-Channel DMA
    • IEEE 802.15.4 MAC Timer, General-Purpose Timers (One 16-Bit, Two 8-Bit)
    • IR Generation Circuitry
    • 32-kHz Sleep Timer With Capture
    • CSMA/CA Hardware Support
    • Accurate Digital RSSI/LQI Support
    • Battery Monitor and Temperature Sensor
    • 12-Bit ADC With Eight Channels and Configurable Resolution
    • AES Security Coprocessor
    • Two Powerful USARTs With Support for Several Serial Protocols
    • 21 General-Purpose I/O Pins
      (19 × 4 mA, 2 × 20 mA)
    • Watchdog Timer
  • Development Tools
    • CC2531 Development Kit
    • Certified CC2531 USB Dongle Reference Design
    • SmartRF™ Software
    • Packet Sniffer
    • IAR Embedded Workbench® Software Available
    • USB Upgradable 2.4-GHz IEEE 802.15.4 Systems
    • RF4CE Remote Control Target for TV or STB
    • PC Peripherals
    • ZigBee® Systems
    • Home/Building Automation
    • Lighting Systems
    • Industrial Control and Monitoring
    • Low-Power Wireless Sensor Networks
    • Consumer Electronics
    • Health Care

SmartRF, Z-Stack, RemoTI are trademarks of Texas Instruments.
IAR Embedded Workbench is a registered trademark of IAR Systems AB.
ZigBee is a registered trademark of ZigBee Alliance.
All other trademarks are the property of their respective owners.

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Parametrics Compare all products in ZigBee

Device Type
Frequency (MHz)
Flash (KB)
Over-the-air Upgrade
Timers - 16-bit
Timers - 32-bit
RX Current (Lowest) (mA)
Sleep Current (uA)
Output Power (dBm)
RX Sensitivity (dBm)
Data Rate (Max) (kbps)
Operating Temperature Range (C)
Package Group
Key Applications
CC2531 CC2530 CC2533 CC2538
Wireless MCU    Wireless MCU    Wireless MCU    Wireless MCU   
24    24    24    24   
Up to 256    Up to 256    Up to 96    Up to 512   
8 KB    8 KB      Up to 32 KB   
128-bit AES    128-bit AES    128-bit AES    AES128/ 256
ECC 128/ 256
No    No      Yes   
1    1    1    8   
0    0    0    4   
19    21    23    32   
12-bit, 8 channel    12-bit, 8 channel    N/A    12-bit, 8 channel   
20.0    20.5    20.0    N/A   
0.4    0.4      1.3   
4.5    4.5      7   
-97    -97      -97   
250    250    250    250   
-40 to 125    -40 to 125    -40 to 125    -40 to 125   
VQFN    VQFN    VQFN    QFN   
2.4-GHz IEEE 802.15.4    2.4-GHz IEEE 802.15.4 Systems
RF4CE Remote Control Systems (64-KB Flash and Higher)
ZigBee Systems (256-KB Flash)
Home/Building Automation
Lighting Systems
Industrial Control and Monitoring
Low-Power Wireless Sensor Networks
Consumer Electronics
Health Care   
2.4 GHz IEEE 802.15.4, Consumer Electronics, RF4CE remote control systems, Shelf Labeling    2.4-GHz IEEE 802.15.4   
ZigBee    RF4CE
SimpleLink CC2x   
Catalog    Catalog    Catalog    Catalog