SLLSFE3 December   2021 TCAN1164-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Device Comparison Table
  7. 7 Pin Configurations and Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 ESD Ratings IEC Specification
    4. 8.4 Recomended Operating Conditions
    5. 8.5 Thermal Information
    6. 8.6 Power Supply Characteristics
    7. 8.7 Electrical Characteristics
    8. 8.8 Switching Characteristics
    9. 8.9 Typical Characteristics
  9. 9 Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1  VSUP Pin
      2. 10.3.2  VCCOUT Pin
      3. 10.3.3  Digital Inputs and Outputs
        1. 10.3.3.1 TXD Pin
        2. 10.3.3.2 RXD Pin
      4. 10.3.4  GND
      5. 10.3.5  nRST Pin
      6. 10.3.6  SDO
      7. 10.3.7  nCS Pin
      8. 10.3.8  SCLK
      9. 10.3.9  SDI
      10. 10.3.10 CAN Bus Pins
      11. 10.3.11 Local Faults
        1. 10.3.11.1 TXD Dominant Timeout (TXD DTO)
        2. 10.3.11.2 Thermal Shutdown (TSD)
        3. 10.3.11.3 Under/Over Voltage Lockout
        4. 10.3.11.4 Unpowered Devices
        5. 10.3.11.5 Floating Terminals
        6. 10.3.11.6 CAN Bus Short Circuit Current Limiting
        7. 10.3.11.7 Sleep Wake Error Timer
      12. 10.3.12 Watchdog
        1. 10.3.12.1 Watchdog Error Counter
        2. 10.3.12.2 Watchdog SPI Control Programming
        3. 10.3.12.3 Watchdog Timing
        4. 10.3.12.4 Question and Answer Watchdog
          1. 10.3.12.4.1 WD Question and Answer Basic information
          2. 10.3.12.4.2 Question and Answer Register and Settings
          3. 10.3.12.4.3 WD Question and Answer Value Generation
        5. 10.3.12.5 Question and Answer WD Example
          1. 10.3.12.5.1 Example configuration for desired behavior
          2. 10.3.12.5.2 Example of performing a question and answer sequence
      13. 10.3.13 Bus Fault Detection and Communication
    4. 10.4 Device Functional Modes
      1. 10.4.1 Operating Mode Description
        1. 10.4.1.1 Normal Mode
        2. 10.4.1.2 Silent Mode
        3. 10.4.1.3 Standby Mode
          1. 10.4.1.3.1 Wake-Up Pattern (WUP) Detection in Standby Mode
        4. 10.4.1.4 Reset Mode
        5. 10.4.1.5 Fail-safe Mode
      2. 10.4.2 CAN Transceiver
        1. 10.4.2.1 CAN Transceiver Operation
        2. 10.4.2.2 CAN Transceiver Modes
          1. 10.4.2.2.1 CAN Off Mode
          2. 10.4.2.2.2 CAN Autonomous: Inactive and Active
          3. 10.4.2.2.3 CAN Active
        3. 10.4.2.3 Driver and Receiver Function Tables
        4. 10.4.2.4 CAN Bus States
    5. 10.5 Programming
      1. 10.5.1 Serial Peripheral Interface (SPI) Communication
      2. 10.5.2 Serial Clock Input (SCLK)
      3. 10.5.3 Serial Data Input (SDI)
      4. 10.5.4 Serial Data Output (SDO)
      5. 10.5.5 Chip Select Not (nCS)
      6. 10.5.6 Registers
        1. 10.5.6.1  DEVICE_ID_y Register (Address = 0h + formula) [reset = xxh]
        2. 10.5.6.2  REV_ID_MAJOR Register (Address = 8h) [reset = 00h]
        3. 10.5.6.3  REV_ID_MINOR Register (Address = 9h) [reset = 00h]
        4. 10.5.6.4  SPI_RSVD_x Register (Address = Ah + formula) [reset = 00h]
        5. 10.5.6.5  Scratch_Pad_SPI Register (Address = Fh) [reset = 00h]
        6. 10.5.6.6  MODE_CNTRL Register (Address = 10h) [reset = 04h]
        7. 10.5.6.7  WD_CONFIG_1 Register (Address = 13h) [reset = 54h]
        8. 10.5.6.8  WD_CONFIG_2 Register (Address = 14h) [reset = 02h]
        9. 10.5.6.9  WD_INPUT_TRIG Register (Address = 15h) [reset = 00h]
        10. 10.5.6.10 WD_QA_CONFIG Register (Address = 2Dh) [reset = 0h]
        11. 10.5.6.11 WD_QA_ANSWER Register (Address = 2Eh) [reset = 0h]
        12. 10.5.6.12 WD_QA_QUESTION Register (Address = 2Fh) [reset = 0h]
        13. 10.5.6.13 STATUS (address = 40h) [reset = 00h]
        14. 10.5.6.14 INT_GLOBAL Register (Address = 50h) [reset = 0h]
        15. 10.5.6.15 INT_1 Register (Address = 51h) [reset = 0h]
        16. 10.5.6.16 INT_2 Register (Address = 52h) [reset = 40h]
        17. 10.5.6.17 INT_3 Register (Address 53h) [reset = 0h]
        18. 10.5.6.18 INT_CANBUS Register (Address = 54h) [reset = 0h]
        19. 10.5.6.19 INT_ENABLE_1 Register (Address = 56h) [reset = F3h]
        20. 10.5.6.20 INT_ENABLE_2 Register (Address = 57h) [reset = 3Fh]
        21. 10.5.6.21 INT_ENABLE_3 Register (Address =58h) [reset = 80h]
        22. 10.5.6.22 INT_ENABLE_CANBUS Register (Address = 59h) [reset = 7Fh]
        23. 10.5.6.23 INT_RSVD_y Register (Address = 5Ah + formula) [reset = 00h]
  11. 11Application Information Disclaimer
    1. 11.1 Application Information
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
        1. 11.2.1.1 Bus Loading, Length and Number of Nodes
      2. 11.2.2 Detailed Design Procedures
        1. 11.2.2.1 CAN Termination
    3. 11.3 Application Curves
  12. 12Power Supply Requirements
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
  14. 14Device and Documentation Support
    1. 14.1 Documentation Support
      1. 14.1.1 Related Documentation
    2. 14.2 Receiving Notification of Documentation Updates
    3. 14.3 Support Resources
    4. 14.4 Trademarks
    5. 14.5 Electrostatic Discharge Caution
    6. 14.6 Glossary
  15. 15Mechanical, Packaging, and Orderable Information

Package Options

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

10.3.11.5 Floating Terminals

The TCAN1164-Q1 has internal pull-ups and pull-downs on critical pins to ensure a known operating behavior if the pins are left floating.

The TXD pin is pulled up to VCCOUT which forces a recessive level if the pin floats. This internal bias should not be relied upon by design but rather a fall-safe option. Special care needs to be taken when the devive is used with a CAN controller that has open drain outputs. The device implements a weak internal pull-up resistor on the TXD pin. The CAN bit timing for CAN FD data rates will require special consideration and the pull-up strength should be considered carfully when using open drain outputs. An adequate external pull-up resistor must be used to ensure that the TXD output of the CAN controller maintains adequate bit timing input to the CAN device.

Table 10-2 Terminal Fail-Safe Biasing
TERMINALPULL-UP or PULL-DOWNCOMMENT
TXDPull-upWeakly biases TXD toward recessive to prevent bus blockage or TXD DTO triggering
nCSPull-upWeakly biases nCS high to prevent un-intended SPI communication
SCLKPull-downWeakly biased to ground