ZHCSH32 November   2017 TLA2021 , TLA2022 , TLA2024

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      系统监控应用示例
  4. 4 修订历史记录
  5. 5 Device Comparison Table
  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 I2C Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagrams
    3. 8.3 Feature Description
      1. 8.3.1 Multiplexer
      2. 8.3.2 Analog Inputs
      3. 8.3.3 Full-Scale Range (FSR) and LSB Size
      4. 8.3.4 Voltage Reference
      5. 8.3.5 Oscillator
      6. 8.3.6 Output Data Rate and Conversion Time
    4. 8.4 Device Functional Modes
      1. 8.4.1 Reset and Power-Up
      2. 8.4.2 Operating Modes
        1. 8.4.2.1 Single-Shot Conversion Mode
        2. 8.4.2.2 Continuous-Conversion Mode
    5. 8.5 Programming
      1. 8.5.1 I2C Interface
        1. 8.5.1.1 I2C Address Selection
        2. 8.5.1.2 I2C Interface Speed
        3. 8.5.1.3 Serial Clock (SCL) and Serial Data (SDA)
        4. 8.5.1.4 I2C Data Transfer Protocol
        5. 8.5.1.5 Timeout
        6. 8.5.1.6 I2C General-Call (Software Reset)
      2. 8.5.2 Reading and Writing Register Data
        1. 8.5.2.1 Reading Conversion Data or the Configuration Register
        2. 8.5.2.2 Writing the Configuration Register
      3. 8.5.3 Data Format
  9. 9 Register Maps
    1. 9.1 Conversion Data Register (RP = 00h) [reset = 0000h]
      1. Table 6. Conversion Data Register Field Descriptions
    2. 9.2 Configuration Register (RP = 01h) [reset = 8583h]
      1. Table 7. Configuration Register Field Descriptions
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Basic Interface Connections
      2. 10.1.2 Connecting Multiple Devices
      3. 10.1.3 Single-Ended Signal Measurements
      4. 10.1.4 Analog Input Filtering
      5. 10.1.5 Duty Cycling To Reduce Power Consumption
      6. 10.1.6 I2C Communication Sequence Example
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curve
  11. 11Power Supply Recommendations
    1. 11.1 Power-Supply Sequencing
    2. 11.2 Power-Supply Decoupling
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13器件和文档支持
    1. 13.1 器件支持
      1. 13.1.1 Third-Party Products Disclaimer
    2. 13.2 相关链接
    3. 13.3 接收文档更新通知
    4. 13.4 社区资源
    5. 13.5 商标
    6. 13.6 静电放电警告
    7. 13.7 Glossary
  14. 14机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

7.6 I2C Timing Requirements

over operating ambient temperature range and VDD = 2 V to 5.5 V (unless otherwise noted)
MIN MAX UNIT
STANDARD-MODE
fSCL SCL clock frequency 10 100 kHz
tLOW Pulse duration, SCL low 4.7 µs
tHIGH Pulse duration, SCL high 4.0 µs
tHD;STA Hold time, (repeated) START condition.
After this period, the first clock pulse is generated.		 4 µs
tSU;STA Setup time, repeated START condition 4.7 µs
tHD;DAT Hold time, data 0 µs
tSU;DAT Setup time, data 250 ns
tr Rise time, SCL, SDA 1000 ns
tf Fall time, SCL, SDA 250 ns
tSU;STO Setup time, STOP condition 4.0 µs
tBUF Bus free time, between STOP and START condition 4.7 µs
tVD;DAT Valid time, data 3.45 µs
tVD;ACK Valid time, acknowledge 3.45 µs
FAST-MODE
fSCL SCL clock frequency 10 400 kHz
tLOW Pulse duration, SCL low 1.3 µs
tHIGH Pulse duration, SCL high 0.6 µs
tHD;STA Hold time, (repeated) START condition.
After this period, the first clock pulse is generated.		 0.6 µs
tSU;STA Setup time, repeated START condition 0.6 µs
tHD;DAT Hold time, data 0 µs
tSU;DAT Setup time, data 100 ns
tr Rise time, SCL, SDA 20 300 ns
tf Fall time, SCL, SDA 300 ns
tSU;STO Setup time, STOP condition 0.6 µs
tBUF Bus free time, between STOP and START condition 1.3 µs
tVD;DAT Valid time, data 0.9 µs
tVD;ACK Valid time, acknowledge 0.9 µs
TLA2021 TLA2022 TLA2024 ti_I2C_bas822.gifFigure 1. I2C Timing Requirements
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