Overview
The UJA1078ATW/5V0,112 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 chip is designed to integrate the essential functions of Electronic Control Units (ECUs) in automotive applications, combining a high-speed CAN transceiver, two LIN transceivers, and various power management and diagnostic features into a single package.
Key Specifications
| Parameter | Description |
|---|---|
| Package | 32-HTSSOP (0.240", 6.10mm Width) Exposed Pad |
| Mounting Type | Surface Mount |
| Interface | CAN, LIN |
| Voltage - Supply | 4.5 V ~ 28 V |
| Voltage Regulator | 5 V regulator (V1), delivering up to 250 mA |
| CAN Transceiver | High-speed, compliant with ISO 11898-2 and ISO 11898-5 standards |
| LIN Transceivers | Compliant with LIN 2.1, LIN 2.0, and SAE J2602 standards |
| Watchdog | Advanced independent watchdog (available in WD versions) |
| Wake-Up Inputs | WAKE1 and WAKE2 inputs with selectable sampling time |
| Standby and Sleep Modes | Very low standby and sleep current with full wake-up capability |
Key Features
- High-speed CAN transceiver and two LIN transceivers for comprehensive network communication.
- Scalable 5 V voltage regulator delivering up to 250 mA for microcontroller supply.
- Advanced independent watchdog with programmable modes (Window, Timeout, and Off) and automatic re-enable in the event of an interrupt.
- 16-bit Serial Peripheral Interface (SPI) for configuration, control, and diagnosis.
- Global enable output for controlling safety-critical hardware and limp home output for activating application-specific ‘limp home’ hardware.
- Overtemperature shutdown and undervoltage warning at 90% of nominal output voltage.
- Low standby and sleep current with full wake-up capability.
- Exposed die pad for improved heat dissipation.
Applications
The UJA1078ATW/5V0,112 is primarily designed for automotive applications, particularly in Electronic Control Units (ECUs) where high-speed CAN and LIN networking are essential. It is used to control power and sensor peripherals, leveraging the CAN network as the main interface and LIN as local sub-busses.
Q & A
- What is the primary function of the UJA1078ATW/5V0,112? The primary function is to integrate high-speed CAN and dual LIN interfaces along with power management and diagnostic features for automotive ECUs.
- What are the key interfaces supported by this chip? The chip supports high-speed CAN and two LIN interfaces.
- What is the voltage range for the supply voltage of this chip? The supply voltage range is 4.5 V to 28 V.
- What type of voltage regulator is included in this chip? It includes a 5 V voltage regulator delivering up to 250 mA.
- Does this chip have a watchdog feature? Yes, it includes an advanced independent watchdog, available in WD versions.
- What are the standby and sleep modes of this chip? The chip has very low standby and sleep current with full wake-up capability.
- How does the chip manage heat dissipation? The chip features an exposed die pad for improved heat dissipation.
- What is the purpose of the limp home output? The limp home output is used to activate application-specific ‘limp home’ hardware in the event of a serious system malfunction.
- Is the chip compliant with any specific standards? Yes, it is compliant with ISO 11898-2, ISO 11898-5, LIN 2.1, LIN 2.0, and SAE J2602 standards.
- What is the package type of this chip? The package type is 32-HTSSOP with an exposed pad.
- What is the mounting type of this chip? The mounting type is surface mount.
