Product details


RAM (KB) 32 Protocols Zigbee 2.6, 6LoWPAN Features USB GPIO 32 Peripherals USB, I2C, 2 SPI, 2 UART, 12-bit ADC 8-channel, 4 timers Security Device Identity, Debug security, Crypto acceleration (AES, SHA2, ECC, RSA) Sensitivity (best) (dBm) -97 Operating temperature range (C) -40 to 125 TX - full power (mA) 24 open-in-new Find other Thread products

Package | Pins | Size

VQFN (RTQ) 56 64 mm² 8 x 8 open-in-new Find other Thread products


  • Microcontroller
    • Powerful ARM® Cortex®-M3 With Code Prefetch
    • Up to 32-MHz Clock Speed
    • 512KB, 256KB or 128KB of In-System-
      Programmable Flash
    • Supports On-Chip Over-the-Air Upgrade (OTA)
    • Supports Dual ZigBee Application Profiles
    • Up to 32KB of RAM (16KB With Retention in All
      Power Modes)
    • cJTAG and JTAG Debugging
  • RF
    • 2.4-GHz IEEE 802.15.4 Compliant RF
    • Excellent Receiver Sensitivity of –97 dBm
    • Robustness to Interference With ACR of 44 dB
    • Programmable Output Power up to 7 dBm
  • Security Hardware Acceleration
    • Future Proof AES-128/256, SHA2 Hardware
      Encryption Engine
    • Optional – ECC-128/256, RSA Hardware
      Acceleration Engine for Secure Key Exchange
    • Radio Command Strobe Processor and Packet
      Handling Processor for Low-Level MAC
  • Low Power
    • Active-Mode RX (CPU Idle): 20 mA
    • Active-Mode TX at 0 dBm (CPU Idle): 24 mA
    • Power Mode 1 (4-µs Wake-Up, 32-KB RAM
      Retention, Full Register Retention): 0.6 mA
    • Power Mode 2 (Sleep Timer Running, 16-KB
      RAM Retention, Configuration Register
      Retention): 1.3 µA
    • Power Mode 3 (External Interrupts, 16-KB
      RAM Retention, Configuration Register
      Retention): 0.4 µA
    • Wide Supply-Voltage Range (2 V to 3.6 V)
  • Peripherals
    • µDMA
    • 4 × General-Purpose Timers
      (Each 32-Bit or 2 × 16-Bit)
    • 32-Bit 32-kHz Sleep Timer
    • 12-Bit ADC With 8 Channels and Configurable
    • Battery Monitor and Temperature Sensor
    • USB 2.0 Full-Speed Device (12 Mbps)
    • 2 × SPI
    • 2 × UART
    • I2C
    • 32 General-Purpose I/O Pins
      (28 × 4 mA, 4 × 20 mA)
    • Watchdog Timer
  • Layout
    • 8-mm × 8-mm QFN56 Package
    • Robust Device for Industrial Operation up to
    • Few External Components
    • Only a Single Crystal Needed for Asynchronous
  • Development Tools
    • CC2538 Development Kit
    • Reference Design Certified Under FCC and
      ETSI Regulations
    • Full Software Support for Contiki/6LoWPAN,
      Smart Grid, Lighting, and ZigBee Home
      Automation With Sample Applications and
      Reference Designs Available
    • Code Composer Studio™
    • IAR Embedded Workbench® for ARM
    • SmartRF™ Studio
    • SmartRF Flash Programmer
open-in-new Find other Thread products


The CC2538xFnn is the ideal wireless microcontroller System-on-Chip (SoC) for high-performance ZigBee applications. The device combines a powerful ARM Cortex-M3-based MCU system with up to 32KB on-chip RAM and up to 512KB on-chip flash with a robust IEEE 802.15.4 radio. This enables the device to handle complex network stacks with security, demanding applications, and over-the-air download. Thirty-two GPIOs and serial peripherals enable simple connections to the rest of the board. The powerful hardware security accelerators enable quick and efficient authentication and encryption while leaving the CPU free to handle application tasks. The multiple low-power modes with retention enable quick startup from sleep and minimum energy spent to perform periodic tasks. For a smooth development, the CC2538xFnn includes a powerful debugging system and a comprehensive driver library. To reduce the application flash footprint, CC2538xFnn ROM includes a utility function library and a serial boot loader. Combined with the robust and comprehensive Z-Stack software solutions from TI, the CC2538 provides the most capable and proven ZigBee solution in the market.

open-in-new Find other Thread products

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 26
Type Title Date
* Data sheet CC2538 Powerful Wireless Microcontroller System-On-Chip for 2.4-GHz IEEE 802.15.4, 6LoWPAN, and ZigBee Applications datasheet (Rev. D) Apr. 07, 2015
* Errata CC2538 SoC for 2.4-GHz IEEE 802.15.4, 6LoWPAN and ZigBee Applications Errata (Rev. A) Jan. 06, 2014
* User guide CC2538 SoC for 2.4-GHz IEEE 802.15.4 & ZigBee/ZigBee IP Apps User's Guide (Rev. C) Sep. 03, 2013
Application note CC2538/CC26x0/CC26x2 Serial Bootloader Interface (Rev. D) Aug. 19, 2021
Technical article Wireless M-Bus 101: Demystifying modes and regional application profiles Jul. 02, 2021
Selection guide Leitfaden zur Auswahl drahtloser Kommunikationstechnologie (Rev. A) Jun. 14, 2021
Selection guide 無線連線技術選擇指南 (Rev. A) Jun. 14, 2021
Selection guide 무선 연결 기술 선택 가이드 (Rev. A) Jun. 14, 2021
Selection guide Wireless Connectivity Technology Selection Guide (Rev. A) May 27, 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
Application note What's New in Zigbee 3.0 (Rev. A) Jun. 06, 2019
Selection guide Zigbee® Selection Guide for SimpleLink MCUs (Rev. F) Feb. 21, 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 Debugging Communication Range Mar. 27, 2018
White paper Wireless Connectivity For The Internet of Things, One Size Does Not Fit All (Rev. A) Oct. 16, 2017
Application note Using GCC/GDB With CC2538 (Rev. A) Feb. 04, 2015
White paper 6LoWPAN Demystified - 6LoWPAN Demystifed – A Low Power IP Mesh Network Oct. 28, 2014
Application note Developing a Low-Cost, Zigbee-Enabled Smart Energy Meter On CC2538 Sep. 10, 2014
Application note AN-131 Pwr Consumption Meas & Optimization for CC2538 End Device With Z-Stack Jun. 04, 2014
Application note AN130 - Using CC2592 Front End with CC2538 Feb. 27, 2014
More literature TI: The IoT technology leader Nov. 01, 2013
More literature The Evolution of the Internet of Things Sep. 09, 2013
User guide CC2538 Peripheral Driver Library User's Guide (Rev. A) May 06, 2013
User guide ROM Texas Instruments CC2538 Family of Products User's Guide (Rev. A) Apr. 18, 2013

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 SmartRF06 Evaluation Board Kit contains one SmartRF06EB. The SmartRF06EB is intended to be used with CC2538EM for radio performance testing and software development.

SmartRF06EB has integrated the XDS100v3 debug probe, enabling downloading and debugging of software running on the CC2538 device (...)

  • XDS100v3 for debugging and flash programming
  • UART back-channel over USB
  • Break-out connectors for easy probing and experimenting
  • Adjustable voltage regulators for stable and low noise power supply
  • Accelerometer and Light Sensor for demo applications
  • SD Card holder enabling off-chip data storage
  • LCD (...)
document-generic User guide

The CC2531EMK kit provides one CC2531 USB Dongle and documentation to support a PC interface to 802.15.4 / ZigBee applications. The dongle can be plugged directly into your PC and can be used as an IEEE 802.15.4 packet sniffer or for other purposes. With the CC2531 USB Firmware Library available on (...)


The CC2531EMK includes:

  • CC2531 USB Firmware Library and Examples (downloadable from web)
  • Works with RemoTI, TIMAC and ZStack for CC2530
  • Supported by SmartRF® Studio, Packet Sniffer and Flash Programmer

The CC2538-CC2592EMK demonstrates the use of the CC2592 PA/LNA front end together with the CC2538 IEEE 802.15.4 System-on-Chip. The CC2592 RF front end includes PA, LNA, switches, balun, and RF matching, and will increase output power and improve receiver sensitivity on a 2.4 GHz low-power RF (...)

  • 2 x CC2538 with CC2592 PA/LNA RF Front End Evaluation Module

The CC2538 Evaluation Module Kit is an add-on kit for the CC2538DK and it contains two CC2538 evaluation module boards. The CC2538 evaluation modules can be used as reference modules for hardware and software prototyping and for verifying the performance of the CC2538 RF IC. In combination with (...)

XDS200 USB Debug Probe

The XDS200 is a debug probe (emulator) used for debugging TI embedded devices.  The XDS200 features a balance of low cost with good performance as compared to the low cost XDS110 and the high performance XDS560v2.  It supports a wide variety of standards (IEEE1149.1, IEEE1149.7, SWD) in a (...)


The XDS200 is the mid-range family of JTAG debug probes (emulators) for TI processors. Designed to deliver good performance and the most common features that place it between the low cost XDS110 and the high performance XDS560v2, the XDS200 is the balanced solution to debug TI microcontrollers (...)

document-generic User guide

The CC2538 development kit provides a complete hardware performance test platform and generic software development environment for the ARM Cortex M3-based, IEEE 802.15.4 compliant CC2538 system-on-chip from Texas Instruments. The kit includes two CC2538 RF evaluation modules (CC2538EM), two general (...)

Software development

IEEE802.15.4 Medium Access control (MAC) software stack
TIMAC TIMAC - IEEE802.15.4 Medium Access Control (MAC) Software Stack

To download the free tools download click the "Get Software" button above. By subscribing, we will be able to notify you of updates when they become available and provide instructions on how to perform the update.

  • Support for IEEE 802.15.4-2006
  • Multiple Platforms: CC2630, CC2538, CC2530 and CC2531 wireless MCUs, CC2592 and CC2590 range extenders
  • Star topology: point-to-point, one-to-many and data concentrator
  • Synchronous (beacon) and asynchronous (non-beacon) modes
  • Network security features
  • Co-processor (...)
A fully compliant ZigBee 3.x solution: Z-Stack
Z-STACK Zigbee 3.0 combines multiple previous Zigbee profiles into one unified standard
  • Incorporates the unified Zigbee Cluster Library which is at the foundation of dotdot, the universal language for IoT applications defining data objects, models and functionalities for embedded IoT applications
  • Implements (...)
Archive for Z-Stack Fully Compliant ZigBee 2012 Solution

This page contains links to obtain previous versions of the Z-Stack releases. For new projects, TI recommends using the newest release in order to take advantages of all improvements and new features. The latest Z-Stack release can be found at


Z-Stack Home

Z-Stack Home is TI's (...)

CC2538 Foundation Firmware
CC2538-SW The CC2538 foundation firmware is an extensive collection of software libraries for the CC2538 - an ARM Cortex-M3 based IEEE 802.15.4 compliant RF system-on-chip. The foundation firmware contains the following components:
  1. driverlib: This is the low level peripheral driver library for easy access to (...)
Code Composer Studio™ integrated development environment (IDE) for wireless connectivity
CCSTUDIO-WCS Code Composer Studio is an integrated development environment (IDE) that supports TI's Microcontroller and Embedded Processors portfolio. Code Composer Studio comprises a suite of tools used to develop and debug embedded applications. It includes an optimizing C/C++ compiler, source code editor (...)
SmartRF Flash Programmer
FLASH-PROGRAMMER SmartRF Flash Programmer 2 can be used to program the flash memory in Texas Instruments ARM based low-power RF wireless MCUs over the debug and serial interfaces.

SmartRF Flash Programmer can be used to program the flash memory in Texas Instruments 8051-based low-power RF wireless MCUs and for (...)

  • Programming of SW images on low-power RF wireless MCUs
  • Programming/updating firmware and bootloader on the Evaluation Boards' USB MCU
  • Append software image to existing software on device
  • Read out software image from device into binary, hex or ELF files (elf and bin for ARM-devices only)
  • Verify software (...)
SWRC272A.ZIP (653 KB)

Design tools & simulation

Third party wireless module search tool
3P-WIRELESS-MODULES The third party wireless module search tool helps developers to identify products that meet their end equipment specifications and procure production ready wireless modules. The third party module vendors included in the search tool are independent third party companies with expertise in designing (...)
  • Modules listed are based on TI wireless technology supporting Wi-Fi®, Bluetooth®, Zigbee®, Sub-1 GHz, Sigfox, 2.4 GHz, multi-band connectivity and more
  • Modules integrate clocks, SPI flash and passive components
  • Listings included for hardware customization, software integration and cloud services
  • Listings (...)
SmartRF Protocol Packet Sniffer
PACKET-SNIFFER The SmartRF Packet Sniffer is a PC software application that can display and store radio packets captured by a listening RF device. The capture device is connected to the PC via USB. Various RF protocols are supported. The Packet Sniffer filters and decodes packets and displays them in a convenient (...)
document-generic User guide
  • Packet sniffer for IEEE 802.15.4, ZigBee and Thread networks
  • Packet sniffer for IEEE 802.15.4ge (TI 15.4 Stack) networks
  • Packet sniffer for TI EasyLink protocol
  • Packet sniffer for Bluetooth® Low Energy
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 (...)

Reference designs

Reference Design for Voltage, Current & Temp Monitoring for Solar Module Level Power Electronics
TIDA-00640 — The TIDA-00640 verified reference design provides an overview on how to implement a solar module level monitoring and communication sub-system. This design addresses the key need of a highly cost optimized monitoring and communication sub-system for solar Module Level Power Electronics (MLPE). This (...)
document-generic Schematic
Standalone 2.4GHz Range Extender Reference Design
CC2592EMK-RD This standalone 2.4 GHz range extender reference design provides all the information needed to use the SimpleLink™ CC2592 range extender (PA/LNA front end) with any 2.4 GHz RF radio in a wide range of applications, including sensor mesh networks and gateways. The CC2592 range extender contains PA (...)
Portable ZigBee Plug-In Software Framework for any OS
TIDC-ZNP-HOST-SW3 A portable host software framework that allows ZigBee to be “bolted on” to existing products in the market, quickly enabling Internet of Things (IoT) system applications. This design can be used with any microcontrollers or processors, offering flexibility in the solution. This software framework (...)
document-generic Schematic document-generic User guide
Segment LCD-Based Low-End In-Home Display with Wireless RF Communication
TIDM-LOWEND-IHD An in-home display (IHD) allows utility customers to track their energy usage information such as total energy consumption, pricing, and kilowatt hours in real time. The display can communicate with utility meters and other enabled appliance typically using Low Power RF communication. In entry line (...)
document-generic Schematic
CC2538EM Reference Design
CC2538EM-RD This 2.4 GHz RF Layout Reference Design demonstrates good decoupling and layout techniques for a low power RF device operating in the license free 2.4 GHz frequency band.
document-generic Schematic

CAD/CAE symbols

Package Pins Download
QFN (RTQ) 56 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

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​