Overview
The NXP UJA1078ATW/3V3/1J is a Safety System Basis Chip (SBC) designed for automotive applications, offering high-speed CAN and dual LIN capabilities. This device integrates a full set of CAN and LIN Electronic Control Unit (ECU) functions, making it ideal for reliable communication networks in vehicles. The UJA1078ATW/3V3/1J is part of the UJA1078 series and is known for its compact HTSSOP-32 package, which is suitable for space-constrained designs. It provides advantages such as reduced system complexity, increased reliability, and improved safety.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer Part Number | UJA1078ATW/3V3/1J |
| Manufacturer | NXP USA Inc. |
| Package/Case | HTSSOP-32 |
| Voltage Supply | 4.5 V - 28 V |
| Interface | High-speed CAN, Dual LIN |
| CAN Speed | Up to 1 Mbps |
| LIN Compliance | LIN 2.1, LIN 2.0, SAE J2602, and compatible with LIN 1.3 |
| Voltage Regulator | 3.3 V regulator (V1) |
| Watchdog | Advanced independent watchdog (in WD versions) |
| Mounting Type | Surface Mount |
Key Features
- High-speed CAN interface with speeds up to 1 Mbps
- Dual LIN interfaces for robust communication
- Compact HTSSOP-32 package for space-saving designs
- Robust error detection and correction mechanisms
- Low power consumption for extended battery life
- Advanced independent watchdog (in WD versions)
- 250 mA voltage regulator for supplying a microcontroller, extendable with external PNP transistor
- Undervoltage warning at 90% of nominal output voltage
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 UJA1078ATW/3V3/1J?
The primary function of the UJA1078ATW/3V3/1J is to serve as a Safety System Basis Chip (SBC) with high-speed CAN and dual LIN capabilities for automotive applications.
- What is the package type of the UJA1078ATW/3V3/1J?
The package type is HTSSOP-32.
- What are the supported voltage ranges for the UJA1078ATW/3V3/1J?
The device supports a voltage supply range of 4.5 V to 28 V.
- What are the key interfaces supported by the UJA1078ATW/3V3/1J?
The device supports high-speed CAN and dual LIN interfaces.
- What is the maximum speed of the CAN interface?
The CAN interface can operate at speeds up to 1 Mbps.
- Is the UJA1078ATW/3V3/1J compliant with any specific LIN standards?
Yes, it is compliant with LIN 2.1, LIN 2.0, SAE J2602, and compatible with LIN 1.3.
- Does the UJA1078ATW/3V3/1J include a voltage regulator?
Yes, it includes a 3.3 V regulator (V1).
- What is the purpose of the watchdog feature in the UJA1078ATW/3V3/1J?
The watchdog feature provides an advanced independent watchdog mechanism to ensure system reliability.
- In what types of automotive systems is the UJA1078ATW/3V3/1J typically used?
It is typically used in automotive infotainment systems, ADAS, body control modules, chassis control modules, and driver information systems.
- How does the UJA1078ATW/3V3/1J contribute to system reliability and safety?
The device contributes to system reliability and safety through its robust error detection and correction mechanisms, low power consumption, and advanced watchdog features.
- Can the voltage regulator in the UJA1078ATW/3V3/1J be extended for higher current capability?
Yes, the 250 mA voltage regulator can be extended with an external PNP transistor for increased current capability and dissipation distribution.
