Overview
The UJA1075ATW/3V3WD,1 is a high-speed CAN/LIN core system basis chip (SBC) designed by NXP USA Inc. for automotive applications. This chip integrates a full set of CAN and LIN Electronic Control Unit (ECU) functions, making it a comprehensive solution for networking in vehicle systems. It combines a high-speed CAN transceiver, a LIN transceiver, two voltage regulators, and an advanced independent watchdog, ensuring robust and reliable system operation.
Key Specifications
| Parameter | Description |
|---|---|
| Package | HTSSOP32: plastic thermal enhanced thin shrink small outline package; 32 leads; body width 6.1 mm; lead pitch 0.65 mm; exposed die pad |
| Voltage Regulator | 3.3 V regulator (V1) for UJA1075ATW/3V3WD,1 versions; extendable with external PNP transistor for increased current capability |
| CAN Transceiver | High-speed CAN transceiver, inter-operable and downward compatible with CAN transceiver TJA1042, and compatible with ISO 11898-2 and ISO 11898-5 standards |
| LIN Transceiver | LIN transceiver compliant with LIN 2.1, LIN 2.0, and SAE J2602, and compatible with LIN 1.3 |
| Watchdog | Advanced independent watchdog (UJA1075A/xx/WD versions) |
| VBAT Voltage Range | Can operate at VBAT voltages down to 5.5 V (e.g., during cranking) in accordance with ISO 7637, pulse 4 |
| Wake-Up Mechanisms | Wake-up by bus activity, by cyclic wake-up, and by the activation of external switches |
Key Features
- High-speed CAN interface with speeds up to 1 Mbps
- LIN transceiver compliant with multiple LIN standards (LIN 2.1, LIN 2.0, SAE J2602, and LIN 1.3)
- Compact HTSSOP-32 package for space-saving designs
- Advanced independent watchdog for enhanced system reliability (UJA1075A/xx/WD versions)
- 250 mA voltage regulator for supplying a microcontroller, extendable with external PNP transistor
- Stable output under all conditions, including low VBAT voltages
- Wake-up mechanisms by bus activity, cyclic wake-up, and external switches
Applications
- Automotive infotainment systems
- Advanced driver-assistance systems (ADAS)
- Body control modules (BCM)
- Chassis control modules (CCM)
- Driver information systems
Q & A
- What is the primary function of the UJA1075ATW/3V3WD,1? The UJA1075ATW/3V3WD,1 is a high-speed CAN/LIN core system basis chip designed to integrate CAN and LIN ECU functions for automotive applications.
- What types of transceivers are included in the UJA1075ATW/3V3WD,1? The chip includes a high-speed CAN transceiver and a LIN transceiver.
- What are the voltage regulator options for this chip? The UJA1075ATW/3V3WD,1 version includes a 3.3 V regulator, which can be extended with an external PNP transistor for increased current capability.
- Does the UJA1075ATW/3V3WD,1 have a watchdog feature? Yes, the UJA1075A/xx/WD versions include an advanced independent watchdog.
- What are the wake-up mechanisms supported by this chip? The chip supports wake-up by bus activity, cyclic wake-up, and the activation of external switches.
- What is the minimum VBAT voltage the chip can operate at? The chip can operate at VBAT voltages down to 5.5 V, in accordance with ISO 7637, pulse 4.
- What is the package type of the UJA1075ATW/3V3WD,1? The package type is HTSSOP32.
- What are some common applications of the UJA1075ATW/3V3WD,1? Common applications include automotive infotainment systems, ADAS, BCM, CCM, and driver information systems.
- Is the UJA1075ATW/3V3WD,1 compliant with any specific standards? Yes, it is compliant with ISO 11898-2 and ISO 11898-5 for CAN, and LIN 2.1, LIN 2.0, SAE J2602, and LIN 1.3 for LIN.
- How does the chip ensure stable output? The chip ensures stable output under all conditions, including low VBAT voltages.
