SNIS133E September   2003  – February 2024 LM95010

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Operating Ratings
    3. 5.3 DC Electrical Characteristics
    4. 5.4 AC Electrical Characteristics
    5. 5.5 Typical Performance Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  SensorPath BUS SWD
      2. 6.3.2  SensorPath BIT SIGNALING
      3. 6.3.3  Bus Inactive
      4. 6.3.4  Data Bit 0 and 1
      5. 6.3.5  Start Bit
      6. 6.3.6  Attention Request
      7. 6.3.7  Bus Reset
      8. 6.3.8  SensorPath BUS TRANSACTIONS
      9. 6.3.9  Bus Reset Operation
      10. 6.3.10 Read Transaction
      11. 6.3.11 Write Transaction
      12. 6.3.12 Read and Write Transaction Exceptions
      13. 6.3.13 Attention Request Transaction
  8. 7 Register Set
    1. 7.1  Fixed Number Setting
    2. 7.2  Register Set Summary
    3. 7.3  Device Reset Operation
    4. 7.4  Device Number (Addr 00o)
    5. 7.5  Manufacturer ID (Addr 01o)
    6. 7.6  Device ID (Addr 02o)
    7. 7.7  Capabilities Fixed (Addr 03o)
    8. 7.8  Device Status (Addr 04o)
    9. 7.9  Device Control (Addr 05o)
    10. 7.10 Temperature Measurement Function (TYPE - 0001)
    11. 7.11 Operation
    12. 7.12 Temperature Capabilities (Addr 10o)
    13. 7.13 Temperature Data Readout (Addr 11o)
    14. 7.14 Temperature Control (Addr 12o)
    15. 7.15 Conversion Rate (Addr 40o)
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Mounting Considerations
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
    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. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

6.3.12 Read and Write Transaction Exceptions

This section describes master and LM95010 handling of special bus conditions, encountered during either Read or Write transactions.

If an LM95010 receives a Start Bit in the middle of a transaction, it aborts the current transaction (the LM95010 does not "complete" the current transaction) and begins a new transaction. Although not recommend for SensorPath normal operation, this situation is legitimate, therefore it is not flagged as an error by the LM95010 and Attention Request is not generated in response to it. The master generating the Start Bit, is responsible for handling the not "complete" transaction at a "higher level".

If LM95010 receives more than the expected number of data bits (defined by the size of the accessed register), it ignores the unnecessary bits. In this case, if both master and LM95010 identify correct EP and ACK bits they "complete" the transaction. However, in most cases, the additional data bits differ from the correct EP and ACK bits. In this case, both the master and the LM95010 do not "complete" the transaction. In addition, the LM95010 performs the following:

  • the BER bit in the LM95010 Device Status register is set
  • the LM95010 generates an Attention Request

If the LM95010 receives less than the expected number of data bits (defined by the size of the accessed register), it waits indefinitely for the missing bits to be sent by the master. If then the master sends the missing bits, together with the correct EP/ACK bits, both master and LM95010 "complete" the transaction. However, if the master starts a new transaction generating a Start Bit, the LM95010 aborts the current transaction (the LM95010 does not "complete" the current transaction) and begins the new transaction. The master is not notified by the LM95010 of the incomplete transaction.