SLYS045A June   2021  – September 2021 TMAG5273

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics
    6. 6.6  Temperature Sensor
    7. 6.7  Magnetic Characteristics For A1
    8. 6.8  Magnetic Characteristics For A2
    9. 6.9  Magnetic Temp Compensation Characteristics
    10. 6.10 I2C Interface Timing
    11. 6.11 Power up & Conversion Time
    12. 6.12 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Magnetic Flux Direction
      2. 7.3.2 Sensor Location
      3. 7.3.3 Interrupt Function
      4. 7.3.4 Device I2C Address
      5. 7.3.5 Magnetic Range Selection
      6. 7.3.6 Update Rate Settings
    4. 7.4 Device Functional Modes
      1. 7.4.1 Stand-by (Trigger) Mode
      2. 7.4.2 Sleep Mode
      3. 7.4.3 Wake-up and Sleep (W&S) Mode
      4. 7.4.4 Continuous Measure Mode
    5. 7.5 Programming
      1. 7.5.1 I2C Interface
        1. 7.5.1.1 SCL
        2. 7.5.1.2 SDA
        3. 7.5.1.3 I2C Read/Write
          1. 7.5.1.3.1 Standard I2C Write
          2. 7.5.1.3.2 General Call Write
          3. 7.5.1.3.3 Standard 3-Byte I2C Read
          4. 7.5.1.3.4 1-Byte I2C Read Command for 16-Bit Data
          5. 7.5.1.3.5 1-Byte I2C Read Command for 8-Bit Data
          6. 7.5.1.3.6 I2C Read CRC
      2. 7.5.2 Data Definition
        1. 7.5.2.1 Magnetic Sensor Data
        2. 7.5.2.2 Temperature Sensor Data
        3. 7.5.2.3 Angle and Magnitude Data Definition
        4. 7.5.2.4 Magnetic Sensor Offset Correction
    6. 7.6 Register Map
      1. 7.6.1 TMAG5273 Registers
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Select the Sensitivity Option
      2. 8.1.2 Temperature Compensation for Magnets
      3. 8.1.3 Sensor Conversion
        1. 8.1.3.1 Continuous Conversion
        2. 8.1.3.2 Trigger Conversion
        3. 8.1.3.3 Pseudo-Simultaneous Sampling
      4. 8.1.4 Magnetic Limit Check
      5. 8.1.5 Error Calculation During Linear Measurement
      6. 8.1.6 Error Calculation During Angular Measurement
    2. 8.2 Typical Application
      1. 8.2.1 Magnetic Tamper Detection
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 I2C Address Expansion
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
      3. 8.2.3 Angle Measurement
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
          1. 8.2.3.2.1 Gain Adjustment for Angle Measurement
        3. 8.2.3.3 Application Curves
    3. 8.3 What to Do and What Not to Do
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information
7.5.1.3.3 Standard 3-Byte I2C Read

Figure 7-13 and Figure 7-10 show examples of standard I2C three byte read command supported by the TMAG5273. The starting byte contains 7-bit secondary device address and the R/W command bit '0'. The MSB of the second byte contains the conversion trigger command bit. Writing '1' at this trigger bit will start a new conversion after the register address decoding is completed. The 7 LSB bits of the second byte contains the starting register address for the write command. After receiving ACK signal from secondary, the primary send the secondary address once again with R/W command bit as '1'. The secondary starts to send the corresponding register data. It will send successive register data with each successive ACK from primary. If CRC is enabled, the secondary will send the fifth CRC byte based off the CRC calculation of immediate past 4 register bytes.

Note: In the standard 3-byte read command the TMAG5273 doesn't support CRC if the data length is more than 4 byte. Initiate successive read commands for larger data stream requiring CRC.

GUID-20210921-SS0I-CSQP-PG4F-FKPNLTXMRGP6-low.svg Figure 7-9 Standard 3-Byte I2C Read With CRC Disabled, CRC_EN = 0b
GUID-20210921-SS0I-WWNP-CCMZ-SXTJK0ZSDNXT-low.svg Figure 7-10 Standard 3-Byte I2C Read With CRC Enabled, CRC_EN = 1b