Overview
The UJA1078ATW/5V0WD,1 is a high-speed CAN (Controller Area Network) and dual LIN (Local Interconnect Network) core system basis chip (SBC) produced by NXP USA Inc. This integrated circuit is designed to replace the basic discrete components commonly found in Electronic Control Units (ECUs) with a single, dedicated chip. It integrates a high-speed CAN transceiver and two LIN transceivers, making it ideal for automotive applications that require reliable communication networks.
The UJA1078ATW/5V0WD,1 supports networking applications by using the high-speed CAN as the main network interface and the LIN interfaces as local sub-busses. It also includes advanced features such as a watchdog, voltage regulators, and wake-up mechanisms to ensure system reliability and low power consumption.
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 | 5 V regulator (V1) for the microcontroller and peripherals; dedicated 5 V regulator (V2) for the high-speed CAN transceiver |
| Operating Voltage | 4.5 V to 28 V (e.g., during cranking, in accordance with ISO 7637 and ISO 16750-2) |
| CAN Interface | High-speed CAN transceiver, compatible with ISO 11898-2 and ISO 11898-5 standards |
| LIN Interface | Dual LIN transceivers, compliant with LIN 2.1, LIN 2.0, and SAE J2602, and compatible with LIN 1.3 |
| Watchdog | Advanced independent watchdog (UJA1078A/xx/WD versions) |
| Wake-Up Mechanisms | Wake-up by bus activity, cyclic wake-up, and external switches |
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 for system reliability
- Voltage regulators for supplying the microcontroller and CAN transceiver
- 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 UJA1078ATW/5V0WD,1 used for?
The UJA1078ATW/5V0WD,1 is used as a core system basis chip in automotive applications, integrating high-speed CAN and dual LIN interfaces to replace discrete components in Electronic Control Units (ECUs).
- What are the key interfaces of the UJA1078ATW/5V0WD,1?
The key interfaces include a high-speed CAN transceiver and two LIN transceivers.
- What is the operating voltage range of the UJA1078ATW/5V0WD,1?
The operating voltage range is from 4.5 V to 28 V.
- Does the UJA1078ATW/5V0WD,1 have a watchdog feature?
- What are the wake-up mechanisms supported by the UJA1078ATW/5V0WD,1?
The chip supports wake-up by bus activity, cyclic wake-up, and external switches.
- What is the package type of the UJA1078ATW/5V0WD,1?
The package type is HTSSOP32 with 32 leads and an exposed die pad.
- What are the typical applications of the UJA1078ATW/5V0WD,1?
Typical applications include automotive infotainment systems, ADAS, body control modules, chassis control modules, and driver information systems.
- How does the UJA1078ATW/5V0WD,1 contribute to system reliability?
The chip contributes to system reliability through its advanced watchdog, robust error detection and correction mechanisms, and stable voltage regulators.
- Can the UJA1078ATW/5V0WD,1 operate during vehicle cranking?
- What is the purpose of the two voltage regulators in the UJA1078ATW/5V0WD,1?
The two voltage regulators (V1 and V2) are used to supply the microcontroller and the high-speed CAN transceiver, respectively.
