SNVSC54 January   2022 LP5861

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison
  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 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 Analog Dimming (Current Gain Control)
      2. 8.3.2 PWM Dimming
      3. 8.3.3 ON and OFF Control
      4. 8.3.4 Data Refresh Mode
      5. 8.3.5 Full Addressable SRAM
      6. 8.3.6 Protections and Diagnostics
    4. 8.4 Device Functional Modes
    5. 8.5 Programming
    6. 8.6 Register Maps
      1. 8.6.1 CONFIG Registers
      2. 8.6.2 GROUP Registers
      3. 8.6.3 DOTGROUP Registers
      4. 8.6.4 DOTONOFF Registers
      5. 8.6.5 FAULT Registers
      6. 8.6.6 RESET Registers
      7. 8.6.7 DC Registers
      8. 8.6.8 PWM Registers
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Application
      2. 9.2.2 Design Requirements
      3. 9.2.3 Detailed Design Procedure
      4. 9.2.4 Program Procedure
      5. 9.2.5 Application Performance Plots
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Support Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

9.2.4 Program Procedure

When selecting data refresh Mode 1, outputs are refreshed instantly after data is received.

When selecting data refresh Mode 2 and 3, VSYNC signal is required for synchronized display. Programming flow is showed as Figure 9-3. To display full pixel of last frame, VSYNC pulse must be sent to the device after the end of last PWM. Time between two pulses tSYNC must be larger than the whole PWM time of all Dots tframe. Common selection like 60 Hz, 90 Hz, 120 Hz or even higher refresh frequency can be supported. High pulse width longer than tSYNC_H is required at the beginning of each VSYNC frame, and data must not be write to PWM registers during high pulse width.

Figure 9-3 Program Procedure