SLLSF83B May   2021  – July 2025 TCAN11623-Q1 , TCAN11625-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configurations and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 ESD Ratings IEC Specification
    4. 5.4 Recomended Operating Conditions
    5. 5.5 Thermal Information
    6. 5.6 Power Supply Characteristics
    7. 5.7 Electrical Characteristics
    8. 5.8 Switching Characteristics
    9. 5.9 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  VSUP Pin
      2. 7.3.2  VCCOUT Pin
      3. 7.3.3  VFLT Pin
      4. 7.3.4  VLDO3 Pin
      5. 7.3.5  Digital Inputs and Outputs
      6. 7.3.6  Digital Control and Timing
      7. 7.3.7  VIO Pin
      8. 7.3.8  GND
      9. 7.3.9  INH Pin
      10. 7.3.10 WAKE Pin
      11. 7.3.11 nRST Pin
      12. 7.3.12 CAN Bus Pins
      13. 7.3.13 Local Faults
        1. 7.3.13.1 TXD Dominant Timeout (TXD DTO)
        2. 7.3.13.2 Thermal Shutdown (TSD)
        3. 7.3.13.3 Under/Over Voltage Lockout
        4. 7.3.13.4 Unpowered Devices
        5. 7.3.13.5 Floating Terminals
        6. 7.3.13.6 CAN Bus Short Circuit Current Limiting
        7. 7.3.13.7 Sleep Wake Error Timer
    4. 7.4 Device Functional Modes
      1. 7.4.1 Operating Mode Description
        1. 7.4.1.1 Normal Mode
        2. 7.4.1.2 Standby Mode
        3. 7.4.1.3 Sleep Mode
          1. 7.4.1.3.1 Remote Wake Request via Wake-Up Pattern (WUP)
          2. 7.4.1.3.2 Local Wake-Up (LWU) via WAKE Input Terminal
        4. 7.4.1.4 Reset Mode
        5. 7.4.1.5 Fail-safe Mode
      2. 7.4.2 CAN Transceiver
        1. 7.4.2.1 CAN Transceiver Operation
        2. 7.4.2.2 CAN Transceiver Modes
          1. 7.4.2.2.1 CAN Off Mode
          2. 7.4.2.2.2 CAN Autonomous: Inactive and Active
          3. 7.4.2.2.3 CAN Active
        3. 7.4.2.3 Driver and Receiver Function Tables
        4. 7.4.2.4 CAN Bus States
  9. 8 Application Information
    1. 8.1 Application Information Disclaimer
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
        1. 8.2.1.1 Bus Loading, Length and Number of Nodes
      2. 8.2.2 Detailed Design Procedures
        1. 8.2.2.1 CAN Termination
    3. 8.3 Application Curves
    4. 8.4 Power Supply Requirements
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

7.4.1.2 Standby Mode

Standby mode is a low power mode of the TCAN1162x-Q1 where the CAN transceiver is placed in the CAN autonomous inactive state by asserting the nSLP pin low. In this mode the TS pin is driven low, the CAN transmitter and receiver are switched off, the bus pins are biased to ground, and the transceiver cannot send or receive data. While in standby mode the low power receiver actively monitors the CAN bus for a valid wake-up pattern. If a valid wake-up pattern is received, the CAN bus pins transition to the CAN autonomous active state where CANH and CANL are internally biased to 2.5V from the VSUP power rail. The reception of a valid wake-up pattern generates a wake-up request by the CAN transceiver by latching the RXD output pin low. The WAKE pin circuitry is active in standby mode and monitors the WAKE pin for either a high-to-low or low-to-high transition. The INH pin is active to supply an enable to the system power supply.

The RXD output pin is asserted low while in standby mode if a wake event or a fault is detected. Note that a POR counts as a wake event and will also cause RXD to latch low.

In standby mode a fail-safe timer, tINACTIVE, is enabled. The tINACTIVE timer adds an additional layer of protection by requiring the system controller to configure the TCAN1162x-Q1 to normal mode before the timer expires. This feature forces the TCAN1162x-Q1 to transition to its lowest power mode, sleep mode, if the processor does not come up properly.

The TCAN11625 internal regulator, VCCOUT, is active in standby mode.

The TCAN11623 internal regulators, VFLT and VLDO3, are active in standby mode.

Standby mode is not the lowest power mode of the device since the INH terminal and internal regulators are active. This allows the rest of the system to operate normally.