ZHCSJT3B May   2019  – August 2020 LP5009 , LP5012

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and Functions
    1.     Pin 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 Characteristics
    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 PWM Control for Each Channel
        1. 8.3.1.1 Independent Color Mixing Per RGB LED Module
        2. 8.3.1.2 Independent Intensity Control Per RGB LED Module
          1. 8.3.1.2.1 Intensity-Control Register Configuration
          2. 8.3.1.2.2 Logarithmic- or Linear-Scale Intensity Control
        3. 8.3.1.3 12-Bit, 29-kHz PWM Generator Per Channel
          1. 8.3.1.3.1 PWM Generator
        4. 8.3.1.4 PWM Phase-Shifting
      2. 8.3.2 LED Bank Control
      3. 8.3.3 Current Range Setting
      4. 8.3.4 Automatic Power-Save Mode
      5. 8.3.5 Protection Features
        1. 8.3.5.1 Thermal Shutdown
        2. 8.3.5.2 UVLO
    4. 8.4 Device Functional Modes
    5. 8.5 Programming
      1. 8.5.1 I2C Interface
        1. 8.5.1.1 Data Validity
        2. 8.5.1.2 Start and Stop Conditions
        3. 8.5.1.3 Transferring Data
        4. 8.5.1.4 I2C Slave Addressing
        5. 8.5.1.5 Control-Register Write Cycle
        6. 8.5.1.6 Control-Register Read Cycle
        7. 8.5.1.7 Auto-Increment Feature
    6. 8.6 Register Maps
      1.      45
      2. 8.6.1  DEVICE_CONFIG0 (Address = 0h) [reset = 0h]
      3. 8.6.2  DEVICE_CONFIG1 (Address = 1h) [reset = 3Ch]
      4. 8.6.3  LED_CONFIG0 (Address = 2h) [reset = 00h]
      5. 8.6.4  BANK_BRIGHTNESS (Address = 3h) [reset = FFh]
      6. 8.6.5  BANK_A_COLOR (Address = 4h) [reset = 00h]
      7. 8.6.6  BANK_B_COLOR (Address = 5h) [reset = 00h]
      8. 8.6.7  BANK_C_COLOR (Address = 6h) [reset = 00h]
      9. 8.6.8  LED0_BRIGHTNESS (Address = 7h) [reset = FFh]
      10. 8.6.9  LED1_BRIGHTNESS (Address = 8h) [reset = FFh]
      11. 8.6.10 LED2_BRIGHTNESS (Address = 9h) [reset = FFh]
      12. 8.6.11 LED3_BRIGHTNESS (Address = 0Ah) [reset = FFh]
      13. 8.6.12 OUT0_COLOR (Address = 0Bh) [reset = 00h]
      14. 8.6.13 OUT1_COLOR (Address = 0Ch) [reset = 00h]
      15. 8.6.14 OUT2_COLOR (Address = 0Dh) [reset = 00h]
      16. 8.6.15 OUT3_COLOR (Address = 0Eh) [reset = 00h]
      17. 8.6.16 OUT4_COLOR (Address = 0Fh) [reset = 00h]
      18. 8.6.17 OUT5_COLOR (Address = 10h) [reset = 00h]
      19. 8.6.18 OUT6_COLOR (Address = 11h) [reset = 00h]
      20. 8.6.19 OUT7_COLOR (Address = 12h) [reset = 00h]
      21. 8.6.20 OUT8_COLOR (Address = 13h) [reset = 00h]
      22. 8.6.21 OUT9_COLOR (Address = 14h) [reset = 00h]
      23. 8.6.22 OUT10_COLOR (Address = 15h) [reset = 00h]
      24. 8.6.23 OUT11_COLOR (Address = 16h) [reset = 00h]
      25. 8.6.24 RESET (Address = 17h) [reset = 00h]
  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 Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Examples
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 支持资源
    4. 12.4 Trademarks
    5. 12.5 静电放电警告
    6. 12.6 术语表
  13. 13Mechanical, Packaging, and Orderable Information

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8.5.1.2 Start and Stop Conditions

START and STOP conditions classify the beginning and the end of the data transfer session. A START condition is defined as the SDA signal transitioning from HIGH to LOW while the SCL line is HIGH. A STOP condition is defined as the SDA transitioning from LOW to HIGH while SCL is HIGH. The bus master always generates START and STOP conditions. The bus is considered to be busy after a START condition and free after a STOP condition. During data transmission, the bus master can generate repeated START conditions. First START and repeated START conditions are functionally equivalent.

GUID-369FDCB4-8F09-4C3B-B512-9C9B9CB8EC7B-low.gifFigure 8-9 Start and Stop Conditions