SNIS237A December   2024  – April 2025 TMP118

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  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 Two-Wire Interface Timing
    7. 6.7 Timing Diagram
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 Digital Temperature Output
      2. 7.3.2 Averaging
      3. 7.3.3 Temperature Comparator and Hysteresis
      4. 7.3.4 Strain Tolerance
      5. 7.3.5 NIST Traceability
    4. 7.4 Device Functional Modes
      1. 7.4.1 Continuous Conversion Mode
      2. 7.4.2 One-Shot Mode (OS)
    5. 7.5 Programming
      1. 7.5.1 I2C and SMBus Interface
        1. 7.5.1.1 Serial Interface
          1. 7.5.1.1.1 Bus Overview
          2. 7.5.1.1.2 Device Address
          3. 7.5.1.1.3 Writing and Reading Operation
            1. 7.5.1.1.3.1 Writes
            2. 7.5.1.1.3.2 Reads
          4. 7.5.1.1.4 General-Call Reset Function
          5. 7.5.1.1.5 Timeout Function
          6. 7.5.1.1.6 Coexistence on I3C Mixed Bus
  9. 8 Device Registers
    1. 8.1 Register Map
      1. 8.1.1 Temp_Result Register (address = 00h) [reset = 0000h]
      2. 8.1.2 Configuration Register (address = 01h) [reset = 60B0h]
      3. 8.1.3 TLow_Limit Register (address = 02h) [reset = 2580h]
      4. 8.1.4 THigh_Limit Register (address = 03h) [reset = 2800h]
      5. 8.1.5 Device ID Register (Address = 0Bh) [reset = 1180h]
      6. 8.1.6 Unique_ID0 Register (Address = 0Ch) [reset = xxxxh]
      7. 8.1.7 Unique_ID1 Register (Address = 0Dh) [reset = xxxxh]
      8. 8.1.8 Unique_ID2 Register (Address = 0Eh) [reset = xxxxh]
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Separate I2C Pullup and Supply Application
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
      2. 9.2.2 Equal I2C Pullup and Supply Voltage Application
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Examples
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

8.1.2 Configuration Register (address = 01h) [reset = 60B0h]

This register is used to configure the operation of the TMP118 and also provides the alert status.

Return to Register Map.

Table 8-5 Configuration Register
15141312111098
One_ShotReservedFault[1:0]PolarityReservedShutdown
R/W-0bR-11bR/W-00bR/W-0bR-0bR/W-0b
76543210
Conversion_Rate[1:0]AlertReservedAVG[1:0]Reserved
R/W-10bR-1bR-1bR/W-00bR-00b
Table 8-6 Configuration Register Field Description
BitFieldTypeResetDescription
15One_ShotR/W0bOne-shot conversion trigger applicable in shutdown mode only. In continuous conversion mode the bit reads 0b. Writing a 1 to this bit triggers a single temperature conversion. During the conversion, this bit reads 0. The device returns to the shutdown state at the completion of the single conversion.
0b = Active conversion ongoing
1b = Trigger a one-shot conversion by writing this bit to 1b
14:13ReservedR11bReserved
12:11Fault[1:0]R/W00bThe fault bit is used to count the number of consecutive conversions for which the alert condition exists before the status bit is set.
00b = 1 fault
01b = 2 faults
10b = 4 faults
11b = 6 faults
10PolarityR/W0bThe polarity bit allows the host to adjust the polarity of the Alert_Flag bit.
0b = Alert_Flag is active low
1b = Alert_Flag is active high
9ReservedR0bReserved.

Program the value to 0b.

8ShutdownR/W0bThe shutdown bit is used to change the device conversion mode.
0b = Continuous conversion mode
1b = Shutdown mode
7:6Conversion_Rate[1:0]R/W10bThe conversion rate bits configure the device conversion interval. The default is conversion every 250ms.
00b = 4s / 0.25Hz
01b = 1s / 1Hz
10b = 0.25s / 4Hz
11b = 125ms / 8Hz
5Alert_FlagR1bThe Alert_Flag bit is a read-only bit which provides the information about the alert status The Polarity bit affects the Alert_Flag value.
4

Reserved

R1bReserved
3:2AVG[1:0]R/W00bAveraging enable bit. Averaging forces every measurement including one-shot measurements to be averaged with the following conversions modes:
00b = No Averaging
01b = 4x Back-to-back Averaging
10b = 8x Back-to-back Averaging
11b = Moving 4x Averaging
1:0ReservedR00bReserved.