Overview
The UJA1075ATW/3V3/WD118, produced by NXP USA Inc., is a high-speed CAN/LIN core system basis chip (SBC) designed to integrate multiple functionalities into a single chip. This SBC replaces the basic discrete components commonly found in Electronic Control Units (ECUs) with a high-speed Controller Area Network (CAN) and a Local Interconnect Network (LIN) interface. It supports networking applications for controlling power and sensor peripherals, making it a crucial component in automotive and industrial systems.
Key Specifications
| Specification | Details |
|---|---|
| Package | HTSSOP32: plastic thermal enhanced thin shrink small outline package; 32 leads; body width 6.1 mm; lead pitch 0.65 mm |
| Voltage Regulator | 3.3 V regulator (V1) |
| Supply Voltage | 4.5 V to 28 V |
| CAN Transceiver | ISO 11898-2 and ISO 11898-5 compliant; inter-operable and downward compatible with CAN transceiver TJA1042 |
| LIN Transceiver | LIN 2.1 compliant; compliant with SAE J2602; downward compatible with LIN 2.0 and LIN 1.3 |
| Watchdog | Advanced independent watchdog (UJA1075A/xx/WD versions) |
| Wake-up Mechanism | Wake-up via CAN, LIN, or local wake-up pins with wake-up source detection |
| Operating Temperature | Capable of operating at VBAT voltages down to 5.5 V (e.g., during cranking) in accordance with ISO 7637, pulse 4 |
Key Features
- High-speed CAN transceiver compliant with ISO 11898-2 and ISO 11898-5 standards.
- LIN transceiver compliant with LIN 2.1, LIN 2.0, and LIN 1.3 standards, and SAE J2602.
- Advanced independent watchdog for system reliability.
- 250 mA voltage regulator for supplying a microcontroller, extendable with an external PNP transistor.
- Wake-up mechanism via CAN, LIN, or local wake-up pins with wake-up source detection.
- Low dropout voltage regulator dedicated to the CAN bus, improving EMC performance.
- Exposed die pad for better heat dissipation.
- Pb-free and RoHS compliant.
Applications
The UJA1075ATW/3V3/WD118 is primarily used in automotive and industrial applications, particularly in Electronic Control Units (ECUs) that require high-speed CAN and LIN interfaces. It is suitable for systems that need reliable and efficient communication between various components, such as engine control units, body control modules, and sensor networks.
Q & A
- What is the primary function of the UJA1075ATW/3V3/WD118? The primary function is to integrate high-speed CAN and LIN interfaces along with power management and watchdog features into a single chip for use in Electronic Control Units (ECUs).
- What are the voltage regulator options for the UJA1075ATW/3V3/WD118? The UJA1075ATW/3V3/WD118 contains a 3.3 V regulator (V1).
- Is the UJA1075ATW/3V3/WD118 compliant with automotive standards? Yes, it is compliant with ISO 11898-2 and ISO 11898-5 for CAN, and LIN 2.1, LIN 2.0, and LIN 1.3 for LIN, as well as SAE J2602.
- What is the package type of the UJA1075ATW/3V3/WD118? The package type is HTSSOP32.
- Does the UJA1075ATW/3V3/WD118 have a watchdog feature? Yes, it includes an advanced independent watchdog (UJA1075A/xx/WD versions).
- How does the UJA1075ATW/3V3/WD118 handle wake-up mechanisms? It supports wake-up via CAN, LIN, or local wake-up pins with wake-up source detection.
- Is the UJA1075ATW/3V3/WD118 RoHS compliant? Yes, it is Pb-free and RoHS compliant.
- What is the operating voltage range of the UJA1075ATW/3V3/WD118? The supply voltage range is from 4.5 V to 28 V.
- Can the UJA1075ATW/3V3/WD118 operate during vehicle cranking? Yes, it can operate at VBAT voltages down to 5.5 V during cranking in accordance with ISO 7637, pulse 4.
- How does the UJA1075ATW/3V3/WD118 improve EMC performance? It includes a dedicated low dropout voltage regulator for the CAN bus, which significantly improves EMC performance.
