SNIS214E june   2021  – july 2023 TMP114

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Comparison
  7. 6 Pin Configuration and Functions
  8. 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 I2C Interface Timing
    7. 7.7 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 1.2 V Compatible Logic Inputs
      2. 8.3.2 Cyclic Redundancy Check (CRC)
      3. 8.3.3 Temperature Limits
      4. 8.3.4 Slew Rate Warning
      5. 8.3.5 NIST Traceability
    4. 8.4 Device Functional Modes
      1. 8.4.1 Continuous Conversion Mode
      2. 8.4.2 Shutdown Mode
        1. 8.4.2.1 One-Shot Temperature Conversions
    5. 8.5 Programming
      1. 8.5.1 Temperature Data Format
      2. 8.5.2 I2C and SMBus Interface
      3. 8.5.3 Device Address
      4. 8.5.4 Bus Transactions
        1. 8.5.4.1 Auto-Increment
        2. 8.5.4.2 Writes
          1. 8.5.4.2.1 CRC Enabled Writes
        3. 8.5.4.3 Reads
          1. 8.5.4.3.1 CRC Enabled Reads
        4. 8.5.4.4 General Call Reset Function
        5. 8.5.4.5 Time-Out Function
        6. 8.5.4.6 Coexist on I3C MixedBus
        7. 8.5.4.7 Cyclic Redundancy Check Implementation
    6. 8.6 Register Map
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Separate I2C Pullup and Supply Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
    3. 9.3 Equal I2C Pullup and Supply Voltage Application
      1. 9.3.1 Design Requirements
      2. 9.3.2 Detailed Design Procedure
    4. 9.4 Power Supply Recommendations
    5. 9.5 Layout
      1. 9.5.1 Layout Guidelines
      2. 9.5.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

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

8.3.2 Cyclic Redundancy Check (CRC)

The TMP114 implements an optional CRC function to improve data integrity and communication robustness using an 8-bit polynomial that is checked during communication. By default the feature is disabled and can be enabled by setting the CRC_EN bit in the Configuration register.

When enabled, the CRC function starts with the seed value of FFh at every start or repeated start condition on the bus and computes one CRC value. After transmitting or receiving a CRC value the TMP114, the next CRC will have the seed value reset to FFh.

When the TMP114 operates in target receive mode or during a write bus transaction, the CRC byte covers the device address, pointer address, and received data bytes. If the device detects a CRC error on the byte, it shall set the CRC_flag status bit in the Alert_Status register. If the CRC byte is not present, the transaction is discarded and the CRC flag is not set.

When the TMP114 operates in target transmit mode or during a read bus transaction, the CRC byte covers the device address and the sent data bytes.