JAJSGR1E October   2014  – September 2021 TMP102-Q1


  1. 特長
  2. アプリケーション
  3. 概要
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings (1)
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Digital Temperature Output
      2. 7.3.2  Serial Interface
      3. 7.3.3  Bus Overview
      4. 7.3.4  Serial Bus Address
      5. 7.3.5  Writing and Reading Operation
      6. 7.3.6  Slave Mode Operations
        1. Slave Receiver Mode
        2. Slave Transmitter Mode
      7. 7.3.7  SMBus Alert Function
      8. 7.3.8  General Call
      9. 7.3.9  High-Speed (Hs) Mode
      10. 7.3.10 Time-Out Function
      11. 7.3.11 Timing Diagrams
      12. 7.3.12 Two-Wire Timing Diagrams
    4. 7.4 Device Functional Modes
      1. 7.4.1 Continuous-Conversion Mode
      2. 7.4.2 Extended Mode (EM)
      3. 7.4.3 Shutdown Mode (SD)
      4. 7.4.4 One-Shot and Conversion Ready (OS)
      5. 7.4.5 Thermostat Mode (TM)
        1. Comparator Mode (TM = 0)
        2. Interrupt Mode (TM = 1)
    5. 7.5 Programming
      1. 7.5.1 Pointer Register
      2. 7.5.2 Temperature Register
      3. 7.5.3 Configuration Register
        1. Shutdown Mode (SD)
        2. Thermostat Mode (TM)
        3. Polarity (POL)
        4. Fault Queue (F1 and F0)
        5. Converter Resolution (R1 and R0)
        6. One-Shot (OS)
        7. Extended Mode (EM)
        8. Alert (AL Bit)
        9. Conversion Rate (CR)
      4. 7.5.4 High-Limit and Low-Limit Registers
  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
      3. 8.2.3 Application Curve
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 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 Community Resources
    4. 11.4 Trademarks
  12. 12Mechanical, Packaging, and Orderable Information



High-Limit and Low-Limit Registers

The temperature limits are stored in the T(LOW) and T(HIGH) registers in the same format as the temperature result, and their values are compared to the temperature result on every conversion. The outcome of the comparison drives the behavior of the ALERT pin, which operates as a comparator output or an interrupt, and is set by the TM bit in the configuration register.

In Comparator mode (TM = 0), the ALERT pin is active when the temperature equals or exceeds the value in THIGH and generates a consecutive number of faults according to fault bits F1 and F0. The ALERT pin remains active until the temperature falls below the indicated TLOW value for the same number of faults.

In Interrupt mode (TM = 1), the ALERT pin becomes active when the temperature equals or exceeds the value in THIGH for a consecutive number of fault conditions as shown in Table 7-11. The ALERT pin remains active until a read operation of any register occurs, or the device successfully responds to the SMBus alert response address. The ALERT pin is cleared if the device is placed in shutdown mode. When the ALERT pin is cleared, it becomes active again only when temperature falls below TLOW. The pin remains active until cleared by a read operation of any register or a successful response to the SMBus alert response address. When the ALERT pin is cleared, the above cycle repeats, and the ALERT pin goes active when the temperature equals or exceeds THIGH. The ALERT pin is also cleared by resetting the device with the general call reset command. This action also clears the state of the internal registers in the device, returning the device to comparator mode (TM = 0).

Both operational modes are shown in Figure 7-8. Table 7-12 and Table 7-13 list the format for the THIGH and TLOW registers. Note that the most significant byte is sent first, followed by the least significant byte. Power-up reset values for THIGH and TLOW are: THIGH = 80°C and TLOW = 75°C. The format of the data for THIGH and TLOW is the same as for the temperature register.

Table 7-12 Bytes 1 and 2 of THIGH Register(1)
The 13-bit Extended-Mode configuration is shown in parenthesis.
Table 7-13 Bytes 1 and 2 of TLOW Register(1)
The 13-bit Extended-Mode configuration is shown in parenthesis.