SBOS891C October   2018  – September 2023 TMP144

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 UART Interface Timing
    7. 6.7 Timing Diagrams
    8. 6.8 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 Power Up
      2. 7.3.2 Digital Temperature Output
      3. 7.3.3 Timeout Function
    4. 7.4 Device Functional Modes
      1. 7.4.1 Continuous Conversion Mode
      2. 7.4.2 Shutdown Mode
      3. 7.4.3 One-Shot Mode
      4. 7.4.4 Extended Temperature Mode
      5. 7.4.5 Temperature Alert Function
      6. 7.4.6 Interrupt Functionality
    5. 7.5 SMAART Wire / UART Interface
      1. 7.5.1 Communication Protocol
      2. 7.5.2 Global Software Reset
      3. 7.5.3 Global Initialization and Address Assignment Sequence
      4. 7.5.4 Global Clear Interrupt
      5. 7.5.5 Global Read and Write
      6. 7.5.6 Individual Read and Write
    6. 7.6 Register Maps
      1. 7.6.1 Temperature Result Register (P[1:0] = 00) [reset = 0000h]
      2. 7.6.2 Configuration Register (P[1:0] = 01) [reset = 0200h]
      3. 7.6.3 Temperature Low Limit Register (P[1:0] = 10) [reset = F600h]
      4. 7.6.4 Temperature High Limit Register (P[1:0] = 11) [reset = 3C00h]
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Trace Length
        2. 8.2.2.2 Voltage Drop Effect
        3. 8.2.2.3 Power Supply Noise Filtering
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Device Nomenclature
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • YBK|4
  • YFF|4
  • YMT|4
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.6.4 Temperature High Limit Register (P[1:0] = 11) [reset = 3C00h]

The temperature high limit register is used to store the high temperature threshold for the device high limit flag. The default power up reset value is +60°C. The power on default value is valid only when ETM = 0. At the end of each temperature conversion, the device compares the temperature result with the temperature high limit register. If the temperature result is greater than the threshold set in this register, the FH bit in the configuration register is set.

When the ETM bit in the configuration register is updated, it is strongly recommended that the user update the high limit register.

Note: When the ETM bit is set to 0, any writes to the EM bit will be ignored.

Table 7-16 Temperature High Limit Register (ETM = 0)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
H[11:0] EM Reserved
R/W-3C0h R/W-0 R-0h
Table 7-17 Temperature High Limit Register (ETM = 0) Field Description
Bit Field Type Reset Description
15:4 H[11:1] R/W 3C0h 12-bit temperature high limit threshold
3 EM R/W 0 Don't care when ETM = 0
2:0 Reserved R 0h Reserved
Table 7-18 Temperature High Limit Register (ETM = 1)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
H[12:0] Reserved
R/W-3C00h R-0h
Table 7-19 Temperature High Limit Register (ETM = 1) Field Description
Bit Field Type Reset Description
15:3 H[12:0] R/W 3C00h 13-bit temperature high limit threshold
2:0 Reserved R 0h Reserved