SWRS205F March   2017  – December 2024 CC3120MOD

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Functional Block Diagrams
  6. 5 Device Comparison
    1. 5.1 Related Products
  7. 6 Terminal Configuration and Functions
    1. 6.1 CC3120MOD Pin Diagram
    2. 6.2 Pin Attributes
      1.      11
    3. 6.3 Connections for Unused Pins
  8. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Current Consumption Summary
    5. 7.5  TX Power and IBAT versus TX Power Level Settings
    6. 7.6  Brownout and Blackout Conditions
    7. 7.7  Electrical Characteristics
    8. 7.8  WLAN Receiver Characteristics
    9. 7.9  WLAN Transmitter Characteristics
    10. 7.10 Reset Requirement
    11. 7.11 Thermal Resistance Characteristics for MOB Package
    12. 7.12 Timing and Switching Characteristics
      1. 7.12.1 Power-Up Sequencing
      2. 7.12.2 Power-Down Sequencing
      3. 7.12.3 Device Reset
      4. 7.12.4 Wakeup From HIBERNATE Mode Timing
    13. 7.13 External Interfaces
      1. 7.13.1 SPI Host Interface
      2. 7.13.2 Host UART Interface
        1. 7.13.2.1 5-Wire UART Topology
        2. 7.13.2.2 4-Wire UART Topology
        3. 7.13.2.3 3-Wire UART Topology
      3. 7.13.3 External Flash Interface
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Module Features
      1. 8.2.1 WLAN
      2. 8.2.2 Network Stack
        1. 8.2.2.1 Security
      3. 8.2.3 Host Interface and Driver
      4. 8.2.4 System
    3. 8.3 Power-Management Subsystem
      1. 8.3.1 VBAT Wide-Voltage Connection
    4. 8.4 Low-Power Operating Modes
      1. 8.4.1 Low-Power Deep Sleep
      2. 8.4.2 Hibernate
      3. 8.4.3 Shutdown
    5. 8.5 Restoring Factory Default Configuration
    6. 8.6 Device Certification and Qualification
      1. 8.6.1 FCC Certification and Statement
      2. 8.6.2 Industry Canada (IC) Certification and Statement
      3. 8.6.3 ETSI/CE Certification
      4. 8.6.4 Japan MIC Certification
      5. 8.6.5 SRRC Certification and Statement
    7. 8.7 Module Markings
    8. 8.8 End Product Labeling
    9. 8.9 Manual Information to the End User
  10. 9 Applications, Implementation, and Layout
    1. 9.1 Application Information
      1. 9.1.1 Typical Application
      2. 9.1.2 Power Supply Decoupling and Bulk Capacitors
      3. 9.1.3 Reset
      4. 9.1.4 Unused Pins
    2. 9.2 PCB Layout Guidelines
      1. 9.2.1 General Layout Recommendations
      2. 9.2.2 RF Layout Recommendations
      3. 9.2.3 Antenna Placement and Routing
      4. 9.2.4 Transmission Line Considerations
  11. 10Environmental Requirements and Specifications
    1. 10.1 Temperature
      1. 10.1.1 PCB Bending
    2. 10.2 Handling Environment
      1. 10.2.1 Terminals
      2. 10.2.2 Falling
    3. 10.3 Storage Condition
      1. 10.3.1 Moisture Barrier Bag Before Opened
      2. 10.3.2 Moisture Barrier Bag Open
    4. 10.4 Baking Conditions
    5. 10.5 Soldering and Reflow Condition
  12. 11Device and Documentation Support
    1. 11.1 Device Nomenclature
    2. 11.2 Development Tools and Software
    3. 11.3 Firmware Updates
    4. 11.4 Documentation Support
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Mechanical, Land, and Solder Paste Drawings
    2. 13.2 Package Option Addendum
      1. 13.2.1 Packaging Information
    3. 13.3 Tape and Reel Information
      1. 13.3.1 Tape and Reel Specification

7.13.2.3 3-Wire UART Topology

The 3-wire UART topology requires only the following lines (see Figure 7-12).

  • RX
  • TX
  • nCTS
CC3120MOD 3-Wire UART TopologyFigure 7-12 3-Wire UART Topology

Using 3-wire topology requires one of the following conditions to be met:

  • Host always stays awake or active.
  • Host goes to sleep, but the UART module has receiver start-edge detection for auto wake up and does not lose data.
  • Host can always receive any amount of data transmitted by the SimpleLink device because there is no flow control in this direction.

Because there is no full flow control, the host cannot stop the SimpleLink device to send its data; thus, the following parameters must be carefully considered:

  • Maximum baud rate
  • RX character interrupt latency and low-level driver jitter buffer
  • Time consumed by the user's application