SWAS034 February   2017 CC3120


  1. 1Device Overview
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
    4. 1.4 Functional Block Diagrams
  2. 2Revision History
  3. 3Terminal Configuration and Functions
    1. 3.1 Pin Diagram
    2. 3.2 Pin Attributes
    3. 3.3 Connections for Unused Pins
  4. 4Specifications
    1. 4.1  Absolute Maximum Ratings
    2. 4.2  ESD Ratings
    3. 4.3  Power-On Hours
      1. 4.3.1 Recommended Operating Conditions
    4. 4.4  Current Consumption Summary
    5. 4.5  TX Power and IBAT versus TX Power Level Settings
    6. 4.6  Brownout and Blackout Conditions
    7. 4.7  Electrical Characteristics (3.3 V, 25°C)
    8. 4.8  WLAN Receiver Characteristics
    9. 4.9  WLAN Transmitter Characteristics
    10. 4.10 WLAN Filter Requirements
    11. 4.11 Thermal Resistance Characteristics for RGK Package
    12. 4.12 Timing and Switching Characteristics
      1. 4.12.1 Power Supply Sequencing
      2. 4.12.2 Device Reset
      3. 4.12.3 Reset Timing
        1. nRESET (32k XTAL)
        2. nRESET (External 32K)
        3. Wakeup From HIBERNATE Mode
      4. 4.12.4 Clock Specifications
        1. Slow Clock Using Internal Oscillator
        2. Slow Clock Using an External Clock
        3. Fast Clock (Fref) Using an External Crystal
        4. Fast Clock (Fref) Using an External Oscillator
      5. 4.12.5 Interfaces
        1. Host SPI Interface Timing
        2. Flash SPI Interface Timing
    13. 4.13 External Interfaces
      1. 4.13.1 SPI Flash Interface
      2. 4.13.2 SPI Host Interface
    14. 4.14 Host UART
      1. 4.14.1 5-Wire UART Topology
      2. 4.14.2 4-Wire UART Topology
      3. 4.14.3 3-Wire UART Topology
  5. 5Detailed Description
    1. 5.1 Overview
    2. 5.2 Functional Block Diagram
    3. 5.3 Device Features
      1. 5.3.1 WLAN
      2. 5.3.2 Network Stack
      3. 5.3.3 Security
      4. 5.3.4 Host Interface and Driver
      5. 5.3.5 System
    4. 5.4 Power-Management Subsystem
      1. 5.4.1 VBAT Wide-Voltage Connection
      2. 5.4.2 Preregulated 1.85V
    5. 5.5 Low-Power Operating Modes
      1. 5.5.1 Low-Power Deep Sleep
      2. 5.5.2 Hibernate
      3. 5.5.3 Shutdown
    6. 5.6 Memory
      1. 5.6.1 External Memory Requirements
    7. 5.7 Restoring Factory Default Configuration
  6. 6Applications, Implementation, and Layout
    1. 6.1 Application Information
      1. 6.1.1 Typical Application—CC3120R Wide-Voltage Mode
      2. 6.1.2 Typical Application Schematic—CC3120R Preregulated, 1.85-V Mode
    2. 6.2 PCB Layout Guidelines
      1. 6.2.1 General PCB Guidelines
      2. 6.2.2 Power Layout and Routing
        1. Design Considerations
      3. 6.2.3 Clock Interfaces
      4. 6.2.4 Digital Input and Output
      5. 6.2.5 RF Interface
  7. 7Device and Documentation Support
    1. 7.1 Tools and Software
    2. 7.2 Device Nomenclature
    3. 7.3 Documentation Support
    4. 7.4 Community Resources
    5. 7.5 Trademarks
    6. 7.6 Electrostatic Discharge Caution
    7. 7.7 Export Control Notice
    8. 7.8 Glossary
  8. 8Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RGK|64
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Device Overview


  • CC3120R SimpleLink™ Wi-Fi® Consists of a Wireless Network Processor (NWP) and Power-Management Subsystems
  • Featuring Wi-Fi Internet-on-a chip™ Dedicated ARM® Cortex®-M3 Microcontroller Unit (MCU) Completely Offloads Wi-Fi and Internet Protocols from the Application MCU
  • Wi-Fi Modes:
    • 802.11b/g/n Station
    • 802.11b/g Access Point (AP) Supports up to Four Stations
    • Wi-Fi Direct® Client/Group Owner
  • WPA2 Personal and Enterprise Security: WEP, WPA/WPA2 PSK, WPA2 Enterprise (802.1x)
  • IPv4 and IPv6 TCP/IP Stack
    • Industry-Standard BSD Socket Application Programming Interfaces (APIs)
      • 16 Simultaneous TCP or UDP Sockets
      • 6 Simultaneous TLS and SSL Sockets
  • IP Addressing: Static IP, LLA, DHCPv4, and DHCPv6 With Duplicate Address Detection (DAD)
  • SimpleLink Connection Manager for Autonomous and Fast Wi-Fi Connections
  • Flexible Wi-Fi Provisioning With SmartConfig™ Technology, AP Mode, and WPS2 Options
  • RESTful API Support Using Internal HTTP Server
  • Wide Set of Security Features
    • Hardware Features
      • Separate Execution Environments
      • Device Identity
    • Networking security
      • Personal and Enterprise Wi-Fi Security
      • Secure Sockets (SSLv3, TLS1.0/1.1/TLS1.2)
      • HTTPS Server
      • Trusted Root-Certificate Catalog
      • TI Root-of-Trust Public key
    • Software IP protection
      • Secure Key Storage
      • File System Security
      • Software Tamper Detection
      • Cloning Protection
  • Embedded Network Applications Running on the Dedicated NWP
    • HTTP/HTTPS Web Server With Dynamic User Callbacks
    • mDNS, DNS-SD, DHCP Server
    • Ping
  • Recovery Mechanism—Can Recover to Factory Defaults or to a Complete Factory Image
  • Wi-Fi TX Power
    • 18.0 dBm @ 1 DSSS
    • 14.5 dBm @ 54 OFDM
  • Wi-Fi RX Sensitivity
    • –96.0 dBm @ 1 DSSS
    • –74.5 dBm @ 54 OFDM
  • Application Throughput
    • UDP: 16 Mbps
    • TCP: 13 Mbps
  • Power-Management Subsystem
    • Integrated DC-DC Converters Support a Wide Range of Supply Voltage:
      • VBAT Wide-Voltage Mode: 2.1 V to 3.6 V
      • VIO is Always Tied With VBAT
      • Preregulated 1.85-V Mode
    • Advanced Low-Power Modes
      • Shutdown: 1 µA
      • Hibernate: 4.5 µA
      • Low-Power Deep Sleep (LPDS): 115 µA
      • RX Traffic: 59 mA @ 54 OFDM
      • TX Traffic: 229 mA @ 54 OFDM, Maximum Power
      • Idle Connected (MCU in LPDS): 690 µA @ DTIM = 1
  • Clock Source
    • 40.0-MHz Crystal With Internal Oscillator
    • 32.768-kHz Crystal or External RTC
  • RGK Package
    • 64-Pin, 9-mm × 9-mm Very Thin Quad Flat Nonleaded (VQFN) Package, 0.5-mm Pitch
  • Operating Temperature
    • Ambient Temperature Range: –40°C to +85°C
  • Device Supports SimpleLink Developers Ecosystem


  • For Internet-of-Things (IoT) applications, such as:
    • Cloud Connectivity
    • Internet Gateway
    • Home and Building Automation
    • Appliances
    • Access Control
    • Security Systems
    • Smart Energy
    • Industrial Control
    • Smart Plug and Metering
    • Wireless Audio
    • IP Network Sensor Nodes
    • Asset Tracking
    • Medical Devices


The CC3120R device is part of the SimpleLink™ microcontroller (MCU) platform which consists of Wi-Fi, Bluetooth® low energy, Sub-1 GHz and host MCUs, which all share a common, easy-to-use development environment with a single core software development kit (SDK) and rich tool set. A one-time integration of the SimpleLink platform enables you to add any combination of the portfolio’s devices into your design, allowing 100 percent code reuse when your design requirements change. For more information, visit Overview for SimpleLink™ solutions.

Connect any microcontroller (MCU) to the Internet of Things (IoT) cloud with the CC3120R device from Texas Instruments™. The Wi-Fi® Alliance CERTIFIED® CC3120R device is part of the second generation of the SimpleLink™ Wi-Fi family that dramatically simplifies the implementation of low-power Internet connectivity.

The CC3120R has all of the Wi-Fi and Internet protocols implemented in the ROM, which runs from the dedicated on-chip ARM® network processor and significantly offloads the host MCU and simplifies the system integration.

The CC3120R Wi-Fi Internet-on-a chip™ device contains a dedicated ARM MCU that offloads many of the networking activities from the host MCU. This subsystem includes an 802.11b/g/n radio, baseband, and MAC with a powerful crypto engine for fast, secure Internet connections with 256-bit encryption. The CC3120R device supports station, AP, and Wi-Fi direct modes. The device also supports WPA2 personal and enterprise security. The device includes embedded TCP/IP and TLS/SSL stacks, an HTTP server, and multiple Internet protocols. The CC3120R device supports a variety of Wi-Fi provisioning methods, including HTTP based on AP mode, SmartConfig™ technology, and WPS2.0.

As part of TI’s SimpleLink Wi-Fi family second generation, the CC3120R device introduces the new features and enhanced capabilities, such as the following:


Enhanced Wi-Fi provisioning

Enhanced power consumption

Wi-Fi AP connection with up to four stations

More concurrently opened BSD sockets; up to 16 BSD sockets, of which 6 are secure

HTTPS support

RESTful API support

Asymmetric keys crypto library

The CC3120R device is delivered with a slim and user-friendly host driver to simplify the integration and development of networking applications. The host driver can easily be ported to most platforms and operating systems (OS). The driver is written in strict ANSI-C (C89) and requires minimal platform adaptation layer (porting layer). The driver has a small memory footprint and can run on 8-, 16-, or 32-bit microcontrollers with any clock speed (no performance or real-time dependency).

The CC3120R device comes in an easy-to-layout VQFN package and is delivered as a complete platform solution, including various tools and software, sample applications, user and programming guides, reference designs, and the TI E2E™ support community. The CC3120R device is part of the SimpleLink MCU Ecosystem.

Device Information(1)

CC3120RNMARGKT/R VQFN (64) 9.00 mm × 9.00 mm
For all available packages, see the orderable addendum at the end of the data sheet.

Functional Block Diagrams

Figure 1-1 shows the CC3120R hardware overview.

CC3120 fbd_SWAS034.gif Figure 1-1 CC3120R Hardware Overview

Figure 1-2 shows an overview of the CC3120R embedded software.

CC3120 CC31x0_SW_FBD.gif Figure 1-2 CC3120R Software Overview