Quad LIN Leader Transceiver with LIN Leader Controller

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Product Details

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Block Diagram

SJA1124 Block Diagram

SJA1124 Block Diagram

Features

General

  • Four LIN leader channels:
    • LIN leader controller
    • LIN transceiver
    • LIN leader termination consisting of a diode and a pull-up resistor.
  • Very low current consumption in Low Power mode with wake-up via SPI or LIN
  • Option to control an external voltage regulator via the INHN output
  • Bus signal shaping optimized for baud rates up to 20 kBd
  • SPI for communicating with the microcontroller:
    • SPI used for configuration, control, diagnosis and LIN data transfer
    • Flexible SPI length from 3 bytes to 18 bytes
    • Output status pin signals SPI operational state
  • Interrupt output pin: interrupts can be configured individually
  • Facilitates synchronous LIN frame transmission across multiple SJA1124 devices
  • VIO input for direct interfacing with 3.3 V and 5 V microcontrollers

LIN leader controllers

  • Independent per LIN channel:
    • Baud rate
    • Operating mode
    • Status and interrupt
  • Complete LIN frame handling and transfer
  • One interrupt per LIN frame
  • Follower response timeout detection
  • Programmable break length
  • Automatic sync field generation
  • Programmable stop bit length
  • Hardware parity generation
  • Hardware or software checksum generation
  • Fault confinement
  • The fractional baud rate generator

Protection

  • Excellent ElectroMagnetic Immunity (EMI)
  • Very high ESD robustness: ±6 kV according to IEC61000-4-2 for pins LIN1 to LIN4 and BAT
  • The bus terminal and battery pin protected against transients in the automotive environment (ISO 7637)
  • LIN dominant timeout function
  • Thermal protection

Standards/Certifications

  • LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A
  • ISO 17987-3:2016, ISO 17987-4:2016 (12 V LIN)
  • SAE J2602-1

Product Longevity Program

  • SJA1124 is included in the Product Longevity Program for 15 years from product launch. Please visit the Product Longevity Page for more information.

Design Resources

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Documentation

Quick reference to our documentation types.

3 documents

Hardware

1 hardware offering

Software

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