SLLSFE4A May   2022  – December 2022 TLIN1431-Q1

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 ESD Ratings, IEC Specification
    4. 6.4 Recommended Operating Conditions
    5. 6.5 Thermal Information
    6. 6.6 Power Supply Characteristics
    7. 6.7 Electrical Characteristics
    8. 6.8 AC Switching Characteristics
    9. 6.9 Typical Characteristics
  7. 7 Parameter Measurement Information
    1. 7.1 Test Circuit: Diagrams and Waveforms
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  LIN (Local Interconnect Network) Bus
        1. 8.3.1.1 LIN Transmitter Characteristics
        2. 8.3.1.2 LIN Receiver Characteristics
          1. 8.3.1.2.1 Termination
      2. 8.3.2  TXD (Transmit Input and Output)
      3. 8.3.3  RXD (Receive Output)
      4. 8.3.4  WAKE (High Voltage Local Wake Up Input)
      5. 8.3.5  WDT or CLK (Pin Programmable Watchdog Delay Input or SPI Clock)
      6. 8.3.6  WDI or SDI (Watchdog Timer Input or SPI Serial Data In)
      7. 8.3.7  PIN or nCS (Pin Watchdog Select or SPI Chip Select)
      8. 8.3.8  LIMP (Limp Home Output – High Voltage Open Drain Output)
        1. 8.3.8.1 LIMP in Pin Control Mode
        2. 8.3.8.2 LIMP in SPI Control Mode
      9. 8.3.9  nWDR/SDO (Watchdog Timeout Reset Output/SPI Serial Data Out)
      10. 8.3.10 HSS (High-side Switch)
      11. 8.3.11 HSSC or FSO (High-side Switch Control or Function Output)
      12. 8.3.12 WKRQ or INH (Wake Request or Inhibit)
      13. 8.3.13 PV
      14. 8.3.14 DIV_ON
      15. 8.3.15 VBAT (Battery Voltage)
      16. 8.3.16 VSUP (Supply Voltage)
      17. 8.3.17 GND (Ground)
      18. 8.3.18 EN or nINT (Enable Input or Interrupt Output)
      19. 8.3.19 nRST (Reset Input and Reset Output)
      20. 8.3.20 VCC (Supply Output)
      21. 8.3.21 VBAT Voltage Divider
      22. 8.3.22 Protection Features
        1. 8.3.22.1  Sleep Wake Error (SWE) Timer
        2. 8.3.22.2  Device Reset
        3. 8.3.22.3  TXD Dominant Time Out (DTO)
        4. 8.3.22.4  Bus Stuck Dominant System Fault: False Wake Up Lockout
        5. 8.3.22.5  Thermal Shutdown
        6. 8.3.22.6  Under-voltage on VSUP
        7. 8.3.22.7  Unpowered Device and LIN Bus
        8. 8.3.22.8  Floating Pins
        9. 8.3.22.9  VCC Voltage Regulator
          1. 8.3.22.9.1 Under or Over Voltage and Short Circuit
          2. 8.3.22.9.2 Output Capacitance Selection
          3. 8.3.22.9.3 Low-Voltage Tracking
          4. 8.3.22.9.4 Power Supply Recommendation
        10. 8.3.22.10 Watchdog
          1. 8.3.22.10.1 Watchdog in Pin Control Mode
          2. 8.3.22.10.2 Watchdog in SPI Control Mode
          3. 8.3.22.10.3 Watchdog Error Counter
          4. 8.3.22.10.4 Pin Control Mode
          5. 8.3.22.10.5 SPI Control Programming
          6. 8.3.22.10.6 Watchdog Register Relationship
          7. 8.3.22.10.7 Watchdog Timing
      23. 8.3.23 Channel Expansion
        1. 8.3.23.1 Channel Expansion for LIN
        2. 8.3.23.2 Channel Expansion for CAN Transceiver
    4. 8.4 Device Functional Modes
      1. 8.4.1 Init Mode
      2. 8.4.2 Normal Mode
      3. 8.4.3 Fast Mode
      4. 8.4.4 Sleep Mode
      5. 8.4.5 Standby Mode
      6. 8.4.6 Restart Mode
        1. 8.4.6.1 Restart Counter
        2. 8.4.6.2 nRST Behavior in Restart Mode
      7. 8.4.7 Fail-safe Mode
      8. 8.4.8 Wake Up Events
        1. 8.4.8.1 Wake Up Request (RXD)
        2. 8.4.8.2 Local Wake Up (LWU) via WAKE Terminal
          1. 8.4.8.2.1 Static WAKE
          2. 8.4.8.2.2 Cyclic Sense Wake
      9. 8.4.9 Mode Transitions
    5. 8.5 Programming
      1. 8.5.1 SPI Communication
        1. 8.5.1.1 Cyclic Redundancy Check
        2. 8.5.1.2 Chip Select Not (nCS)
        3. 8.5.1.3 Serial Clock Input (CLK)
        4. 8.5.1.4 Serial Data Input (SDI)
        5. 8.5.1.5 Serial Data Output (SDO)
    6. 8.6 Registers
      1. 8.6.1  DEVICE_ID_y Register (Address = 0h + formula) [reset = 0h]
      2. 8.6.2  REV_ID_MAJOR Register (Address = 8h) [reset = 01h]
      3. 8.6.3  REV_ID_MINOR Register (Address = 9h) [reset = 0h]
      4. 8.6.4  CRC_CNTL Register (Address = Ah) [reset = 0h]
      5. 8.6.5  CRC_POLY_SET (Address = Bh) [reset = 00h]
      6. 8.6.6  Scratch_Pad_SPI Register (Address = Fh) [reset = 0h]
      7. 8.6.7  WAKE_PIN_CONFIG1 Register (Address = 11h) [reset = 04h]
      8. 8.6.8  WAKE_PIN_CONFIG2 Register (Address = 12h) [reset = 2h]
      9. 8.6.9  WD_CONFIG_1 Register (Address = 13h) [reset = 90h]
      10. 8.6.10 WD_CONFIG_2 Register (Address = 14h) [reset = 02h]
      11. 8.6.11 WD_INPUT_TRIG Register (Address = 15h) [reset = 0h]
      12. 8.6.12 WD_RST_PULSE Register (Address = 16h) [reset = 40h]
      13. 8.6.13 FSM_CONFIG Register (Address = 17h) [reset = 0h]
      14. 8.6.14 FSM_CNTR Register (Address = 18h) [reset = 0h]
      15. 8.6.15 DEVICE_RST Register (Address = 19h) [reset = 0h]
      16. 8.6.16 DEVICE_CONFIG (Address = 1Ah) [reset = 80h]
      17. 8.6.17 DEVICE_CONFIG2 (Address = 1Bh) [reset = 0h]
      18. 8.6.18 SWE_TIMER (Address = 1Ch) [reset = 30h]
      19. 8.6.19 LIN_CNTL (Address = 1Dh) [reset = 00h]
      20. 8.6.20 HSS_CNTL (Address = 1Eh) [reset = 0h]
      21. 8.6.21 PWM1_CNTL1 (Address = 1Fh) [reset = 0h]
      22. 8.6.22 PWM1_CNTL2 (Address = 20h) [reset = 0h]
      23. 8.6.23 PWM1_CNTL3 (Address = 21h) [reset = 00h]
      24. 8.6.24 PWM2_CNTL1 (Address = 22h) [reset = 0h]
      25. 8.6.25 PWM2_CNTL2 (Address = 23h) [reset = 0h]
      26. 8.6.26 PWM2_CNTL3 (Address = 24h) [reset = 0h]
      27. 8.6.27 TIMER1_CONFIG (Address = 25h) [reset = 00h]
      28. 8.6.28 TIMER2_CONFIG (Address = 26h) [reset = 00h]
      29. 8.6.29 RSRT_CNTR (Address = 28h) [reset = 40h]
      30. 8.6.30 nRST_CNTL (Address = 29h) [reset = 00h]
      31. 8.6.31 INT_GLOBAL Register (Address = 50h) [reset = A0h]
      32. 8.6.32 INT_1 Register (Address = 51h) [reset = 0h]
      33. 8.6.33 INT_2 Register (Address = 52h) [reset = 40h]
      34. 8.6.34 INT_3 Register (Address 53h) [reset = 0h]
      35. 8.6.35 INT_EN_1 Register (Address = 56h) [reset = B0h]
      36. 8.6.36 INT_EN_2 Register (Address = 57h) [reset = 37h]
      37. 8.6.37 INT_EN_3 Register (Address =58h) [reset = BCh]
      38. 8.6.38 INT_4 Register (Address = 5Ah) [reset = 0h]
      39. 8.6.39 INT_EN_4 Register (Address = 5Eh) [reset = CCh]
      40. 8.6.40 Reserved Registers
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Device Brownout Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Normal Mode Application Note
        2. 9.2.1.2 Standby Mode Application Note
        3. 9.2.1.3 TXD Dominant State Timeout Application Note
      2. 9.2.2 Detailed Design Procedures
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  10. 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
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

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

8.4.7 Fail-safe Mode

When the TLIN1431x-Q1 has certain fault conditions, the device enters a fail-safe mode (FSM). This feature can be disabled in SPI control mode, but is always on in pin control mode. This mode turns on LIMP and brings all other function into lower power mode states. Fault conditions are over-voltage on VCC, thermal shutdown, VCC under-voltage events and reaching restart counter limit in SPI control mode. When entering FSM, a fail-safe mode counter is incremented. The counter limit is set at register 8'h18[7:4], FSM_CNTR_SET and should be set to greater than 1. To avoid unwanted actions the counter should be cleared by writing 0h to 8'h18[3:0]. If the limit is reached a programmed action will be executed, register 8'h17[7:4], FSM_CNTR_ACT. Once the fault conditions are cleared, the device can be put back into restart mode from a wake event. If a fault condition is still in effect after the wake event the device enters sleep. If no wake event takes place, the device enters sleep mode after the programmed SWE timer, tINACT_FS, times out.

Figure 8-42 Fail-safe Mode Pin Control
Figure 8-43 Fail-safe Mode SPI Control
Note:

When the device enters fail-safe mode, the SWE timer automatically starts.

  • If SWE timer times out, the device enters sleep mode
  • If a wake event takes place prior to the SWE timer timing out, the device determines if fault is still present.
    • If fault is present, the device enters sleep mode.
    • If fault has cleared, the device enters restart mode.

When fail-safe mode is entered due to a thermal shutdown (TSD), VCC over-voltage (OVCC) or a VCC short circuit (VCCSC) event the following takes place:

  • LDO is turned off
  • If the device receives a wake event, the LDO is turned on for tLDOON to determine if the TSD, OVCC or VCCSC event is still present.
    • During this window, if a TSD or OVCC is detected the device immediately enters sleep mode.
    • At the end of tLDOON window, if a VCCSC is detected the device enters sleep mode.
  • If fault is cleared, the device enters restart mode.

    If the device enters fail-safe mode and VCC is on, the tLDOON timer is started and expires before the device transitions to restart mode.