SLVS331I December   2000  – October 2021

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
    1.     6
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Switching Characteristics
    8. 7.8 Dissipation Ratings
    9. 7.9 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Input Voltage (VDD)
        1. 8.3.1.1 VDD Hysteresis
        2. 8.3.1.2 VDD Glitch Immunity
      2. 8.3.2 User-Programmable Watchdog Timer (WDI)
      3. 8.3.3 RESET Output
    4. 8.4 Device Functional Modes
      1. 8.4.1 Normal Operation (VDD > VIT)
      2. 8.4.2 Above Power-On Reset But Less Than Threshold (VPOR < VDD < VIT)
      3. 8.4.3 Below Power-On Reset (VDD < VPOR)
    5. 8.5 Programming
      1. 8.5.1 Implementing Window-Watchdog Settings
      2. 8.5.2 Programmable Window-Watchdog by Using an External Capacitor
      3. 8.5.3 Lower Boundary Calculation
      4. 8.5.4 Watchdog Software Considerations
      5. 8.5.5 Power-Up Considerations
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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8.3 Feature Description

The TPS3813xxx family incorporates both a voltage supervisor and a window-watchdog timer into a single device. The device monitors the input voltage and the supervised processor must trigger the WDI pin of the TPS3813xxx within the user-programmable window to keep RESET from asserting.