SBOSA50A December   2021  – March 2022 TMP127-Q1

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 SPI Interface Timing
    7. 7.7 Timing Diagrams
    8. 7.8 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 Low Power Consumption
    4. 8.4 Device Functional Modes
      1. 8.4.1 Continuous Conversion Mode
      2. 8.4.2 Shutdown Mode
    5. 8.5 Programming
      1. 8.5.1 Temperature Data Format
      2. 8.5.2 Serial Bus Interface
        1. 8.5.2.1 Communication in Shutdown Mode
        2. 8.5.2.2 Communication in Continuous Conversion Mode
        3. 8.5.2.3 Internal Register Structure
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Read-Only Configuration
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
      2. 9.2.2 Read/Write Configuration
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
  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

8.5.1 Temperature Data Format

Temperature data is represented by a 14-bit, two's complement word with an LSB (Least Significant Bit) equal to 0.03125 °C. The last two bits of the register are always 11b.

Table 8-1 14-Bit Temperature Data Format
TemperatureDigital Output
BinaryHex
175 °C0101 0111 1000 00115783
150 °C0100 1011 0000 00114B03
125 °C0011 1110 1000 00113E83
25 °C0000 1100 1000 00110C83
0.03125 °C0000 0000 0000 01110007
0°C0000 0000 0000 00110003
−0.03125 °C1111 1111 1111 1111FFFF
−25 °C1111 0011 1000 0011F383
−40 °C1110 1100 0000 0011EC03
−55 °C1110 0001 0000 0011E483

The first data byte is the Most Significant Byte (MSB) with most significant bit first, permitting only as much data as necessary that must be read to determine temperature condition. For example, if the first four bits of the temperature data indicate an overtemperature condition, the host controller could immediately take action to remedy the excessive temperatures.