Quad LIN Commander Transceiver with LIN Commander Controller
SJA1124 Receive alerts
The SJA1124 is a quad local interconnect network (LIN) commander channel device. Each of the four channels contains a LIN commander controller and LIN transceiver with commander termination. LIN commander frames are transferred to the physical LIN bus via the LIN physical layer.
The SJA1124 is primarily intended for in-vehicle subnetworks using baud rates up to 20 kBd and is compliant with LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, ISO 17987-4:2016(12 V LIN) and SAE J2602-1.
A serial peripheral interface (SPI) and an interrupt output provide the interface between the SJA1124 and a microcontroller.
Product Details
Features
General Features
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Four LIN commander channels:
- LIN commander controller
- LIN transceiver
- LIN commander 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
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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 Commander Controllers
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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
- This product is included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The SJA1124 is included in the 15-year program
Documentation
Quick reference to our documentation types.
Design Resources
Hardware
1 hardware offering
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Evaluation and Development BoardsEvaluation Board for SJA1124 SPI to Quad-LIN Bridge