SBOS288M January   2004  – December 2020 TMP175 , TMP75

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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 I2C Interface Timing
    7. 6.7 Typical Characteristics
  7. 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
        1. 7.3.2.1 Bus Overview
        2. 7.3.2.2 Serial Bus Address
        3. 7.3.2.3 Writing and Reading to the TMP175 and TMP75
        4. 7.3.2.4 Slave Mode Operations
          1. 7.3.2.4.1 Slave Receiver Mode
          2. 7.3.2.4.2 Slave Transmitter Mode
        5. 7.3.2.5 SMBus Alert Function
        6. 7.3.2.6 General Call
        7. 7.3.2.7 High-Speed Mode
        8. 7.3.2.8 Time-out Function
      3. 7.3.3 Timing Diagrams
      4. 7.3.4 Two-Wire Timing Diagrams
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode (SD)
      2. 7.4.2 One-shot (OS)
      3. 7.4.3 Thermostat Mode (TM)
      4. 7.4.4 Comparator Mode (TM = 0)
      5. 7.4.5 Interrupt Mode (TM = 1)
    5. 7.5 Programming
      1. 7.5.1 Pointer Register
        1. 7.5.1.1 Pointer Register Byte (pointer = N/A) [reset = 00h]
        2. 7.5.1.2 Pointer Addresses of the TMP175
      2. 7.5.2 Temperature Register
      3. 7.5.3 Configuration Register
        1. 7.5.3.1 Shutdown Mode (SD)
        2. 7.5.3.2 Thermostat Mode (TM)
        3. 7.5.3.3 Polarity (POL)
        4. 7.5.3.4 Fault Queue (F1/F0)
        5. 7.5.3.5 Converter Resolution (R1/R0)
        6. 7.5.3.6 One-Shot (OS)
      4. 7.5.4 High and Low Limit Registers
  8. 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. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.3.2.2 Serial Bus Address

To communicate with the TMP175 and TMP75, the master must first address slave devices through a slave address byte. The slave address byte consists of seven address bits, and a direction bit indicating the intent of executing a read or write operation.

The TMP175 features three address pins to allow up to 27 devices to be addressed on a single bus interface. Table 7-2 describes the pin logic levels used to properly connect up to 27 devices. A 1 indicates the pin is connected to the supply (VCC); a 0 indicates the pin is connected to GND; float indicates the pin is left unconnected. The state of pins A0, A1, and A2 is sampled on every bus communication and must be set prior to any activity on the interface.

The TMP75 features three address pins allowing up to eight devices to be connected per bus. Pin logic levels are described in Table 7-3. The address pins of the TMP175 and TMP75 are read after reset, at start of communication, or in response to a two-wire address acquire request. After the state of the pins are read, the address is latched to minimize power dissipation associated with detection.

Table 7-2 Address Pins and Slave Addresses for the TMP175
A2A1A0SLAVE ADDRESS
0001001000
0011001001
0101001010
0111001011
1001001100
1011001101
1101001110
1111001111
Float001110000
Float0Float1110001
Float011110010
Float101110011
Float1Float1110100
Float111110101
FloatFloat01110110
FloatFloat11110111
0Float00101000
0Float10101001
1Float00101010
1Float10101011
00Float0101100
01Float0101101
10Float0101110
11Float0101111
0FloatFloat0110101
1FloatFloat0110110
FloatFloatFloat0110111
Table 7-3 Address Pins and Slave Addresses for the TMP75
A2A1A0SLAVE ADDRESS
0001001000
0011001001
0101001010
0111001011
1001001100
1011001101
1101001110
1111001111