SWAS037B February   2019  – May 2021 CC3135

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Functional Block Diagram
  5. 5 Revision History
  6. 6 Device Comparison
    1. 6.1 Related Products
  7. 7 Terminal Configuration and Functions
    1. 7.1 Pin Diagram
    2. 7.2 Pin Attributes
    3. 7.3 Signal Descriptions
      1.      12
    4. 7.4 Connections for Unused Pins
  8. 8 Specifications
    1. 8.1  Absolute Maximum Ratings
    2. 8.2  ESD Ratings
    3. 8.3  Power-On Hours (POH)
    4. 8.4  Recommended Operating Conditions
    5. 8.5  Current Consumption Summary: 2.4 GHz RF Band
    6. 8.6  Current Consumption Summary: 5 GHz RF Band
    7. 8.7  TX Power Control for 2.4 GHz Band
    8. 8.8  TX Power Control for 5 GHz
    9. 8.9  Brownout and Blackout Conditions
      1.      24
    10. 8.10 Electrical Characteristics for DIO Pins
      1.      26
      2.      27
    11. 8.11 Electrical Characteristics for Pin Internal Pullup and Pulldown
    12. 8.12 WLAN Receiver Characteristics
      1.      30
      2.      31
    13. 8.13 WLAN Transmitter Characteristics
      1.      33
      2.      34
    14. 8.14 WLAN Transmitter Out-of-Band Emissions
      1.      36
      2.      37
    15. 8.15 BLE/2.4 GHz Radio Coexistence and WLAN Coexistence Requirements
    16. 8.16 Thermal Resistance Characteristics for RGK Package
    17. 8.17 Timing and Switching Characteristics
      1. 8.17.1 Power Supply Sequencing
      2. 8.17.2 Device Reset
      3. 8.17.3 Reset Timing
        1. 8.17.3.1 nRESET (32-kHz Crystal)
        2.       45
        3. 8.17.3.2 nRESET (External 32-kHz Crystal)
          1.        47
      4. 8.17.4 Wakeup From HIBERNATE Mode
        1.       49
      5. 8.17.5 Clock Specifications
        1. 8.17.5.1 Slow Clock Using Internal Oscillator
          1.        52
        2. 8.17.5.2 Slow Clock Using an External Clock
          1.        54
        3. 8.17.5.3 Fast Clock (Fref) Using an External Crystal
          1.        56
        4. 8.17.5.4 Fast Clock (Fref) Using an External Oscillator
          1.        58
      6. 8.17.6 Interfaces
        1. 8.17.6.1 Host SPI Interface Timing
          1.        61
        2. 8.17.6.2 Flash SPI Interface Timing
          1.        63
        3. 8.17.6.3 DIO Interface Timing
          1. 8.17.6.3.1 DIO Output Transition Time Parameters (Vsupply = 3.3 V)
            1.         66
          2. 8.17.6.3.2 DIO Input Transition Time Parameters
            1.         68
    18. 8.18 External Interfaces
      1. 8.18.1 SPI Flash Interface
      2. 8.18.2 SPI Host Interface
      3. 8.18.3 Host UART Interface
        1. 8.18.3.1 5-Wire UART Topology
        2. 8.18.3.2 4-Wire UART Topology
        3. 8.18.3.3 3-Wire UART Topology
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Device Features
      1. 9.2.1 WLAN
      2. 9.2.2 Network Stack
      3. 9.2.3 Security
      4. 9.2.4 Host Interface and Driver
      5. 9.2.5 System
    3. 9.3 FIPS 140-2 Level 1 Certification
    4. 9.4 Power-Management Subsystem
      1. 9.4.1 VBAT Wide-Voltage Connection
    5. 9.5 Low-Power Operating Modes
      1. 9.5.1 Low-Power Deep Sleep
      2. 9.5.2 Hibernate
      3. 9.5.3 Shutdown
    6. 9.6 Memory
      1. 9.6.1 External Memory Requirements
    7. 9.7 Restoring Factory Default Configuration
    8. 9.8 Hostless Mode
  10. 10Applications, Implementation, and Layout
    1. 10.1 Application Information
      1. 10.1.1 BLE/2.4 GHz Radio Coexistence
      2. 10.1.2 Antenna Selection
      3. 10.1.3 Typical Application
    2. 10.2 PCB Layout Guidelines
      1. 10.2.1 General PCB Guidelines
      2. 10.2.2 Power Layout and Routing
        1. 10.2.2.1 Design Considerations
      3. 10.2.3 Clock Interface Guidelines
      4. 10.2.4 Digital Input and Output Guidelines
      5. 10.2.5 RF Interface Guidelines
  11. 11Device and Documentation Support
    1. 11.1  Third-Party Products Disclaimer
    2. 11.2  Tools and Software
    3. 11.3  Firmware Updates
    4. 11.4  Device Nomenclature
    5. 11.5  Documentation Support
    6. 11.6  Support Resources
    7. 11.7  Trademarks
    8. 11.8  Electrostatic Discharge Caution
    9. 11.9  Export Control Notice
    10. 11.10 Glossary
  12. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Packaging Information
    2. 12.2 Package Option Addendum
      1. 12.2.1 Packaging Information
      2. 12.2.2 Tape and Reel Information

10.1.1 BLE/2.4 GHz Radio Coexistence

The CC3135 device is designed to support BLE/2.4 GHz radio coexistence. Because WLAN is inherently more tolerant to time-domain disturbances, the coexistence mechanism gives priority to the Bluetooth® low energy entity over the WLAN. Bluetooth® low energy operates in the 2.4 GHz band, therefore the coexistence mechanism does not affect the 5 GHz band. The CC3135 device can operate normally on the 5 GHz band, while the Bluetooth® low energy works on the 2.4 GHz band without mutual interference.

The following coexistence modes can be configured by the user:

  • Off mode or intrinsic mode

    • No BLE/2.4 GHz radio coexistence, or no synchronization between WLAN and Bluetooth® low energy—in case Bluetooth® low energy exists in this mode, collisions can randomly occur.

  • Time Division Multiplexing (TDM, Single Antenna)
    • 2.4 GHz Wi-Fi band (see Figure 10-1)

      In this mode, the two entities share the antenna through an RF switch using two GPIOs (one input and one output from the WLAN perspective).

    • 5 GHz Wi-Fi band (see Figure 10-2)

      In this mode, the WLAN operates on the 5 GHz band and Bluetooth® low energy operates on the 2.4 GHz band. A 2.4- or 5 GHz diplexer is required for sharing the single antenna.

  • Time Division Multiplexing (TDM, Dual Antenna)
    • 2.4 GHz Wi-Fi Band (see Figure 10-3)

      In this mode, the two entities have separate antennas. No RF switch is required and only a single GPIO (one input from the WLAN perspective).

    • 5 GHz Wi-Fi band (see Figure 10-4)

      In this mode, the WLAN operates on the 5 GHz band and Bluetooth® low energy operates on the 2.4 GHz band. No diplexer is required for the dual-antenna solution.

GUID-51308D9D-E43B-4104-898C-A598D8D3BCC8-low.gifFigure 10-1 2.4 GHz, Single-Antenna Coexistence Mode Block Diagram

 

Figure 10-2 shows the single antenna implementation of a complete Bluetooth® low energy and WLAN coexistence network with the WLAN operating on either a 2.4- or a 5 GHz band. The SOP lines control the 5 GHz switch. The Coex switch is controlled by a GPIO signal from the BLE device and a GPIO signal from the CC3135 device.

GUID-D78DE800-DBD2-4D26-8614-DCF902C20A0D-low.gifFigure 10-2 Single Antenna Coexistence Solution with 5 GHz Wi-Fi®

Figure 10-3 shows the dual antenna implementation of a complete Bluetooth® low energy and WLAN coexistence network with the WLAN operating on either a 2.4- or a 5 GHz band. Note in this implementation no Coex switch is required and only a single GPIO from the BLE device to the CC3135 device is required.

GUID-BCCFDFBC-370C-450E-AD11-053C722C9569-low.gifFigure 10-3 Dual-Antenna Coexistence Mode Block Diagram

Figure 10-4 shows the dual antenna implementation of a complete Bluetooth® low energy and WLAN coexistence network with the WLAN operating on either a 2.4- or a 5 GHz band. In this case, the 2.4 GHz and 5 GHz Wi-Fi share an antenna and the BLE has it's own dedicated antenna. The SOP lines control the 5 GHz switch. Note in this implementation no Coex switch is required and only a single GPIO from the BLE device to the CC3135 device is required.

GUID-400E8A06-FC88-471D-B811-E0CDD22EBF42-low.gifFigure 10-4 Dual Antenna Coexistence Solution with 5 GHz Wi-Fi®