Overview
The NXP UJA1078ATW/3V3/WDJ is a high-speed CAN/dual LIN core System Basis Chip (SBC) designed for use in automotive and industrial applications. This integrated chip replaces basic discrete components commonly found in Electronic Control Units (ECUs) with a high-speed Controller Area Network (CAN) transceiver and two Local Interconnect Network (LIN) transceivers. It also includes a 250 mA voltage regulator and an advanced independent watchdog, making it a comprehensive solution for networking and power management in control units.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Manufacturer | NXP USA Inc. | Package/Case | HTSSOP32 (SOT549-1) |
| Voltage Regulator | 3.3 V | Supply Voltage Range | 4.5 V ~ 28 V |
| CAN Transceiver | High-speed, ISO 11898-2 and ISO 11898-5 compliant | LIN Transceivers | Compliant with LIN 2.1, LIN 2.0, and SAE J2602 |
| Watchdog | Advanced independent watchdog (UJA1078A/xx/WD versions) | Current Capability | 250 mA, extendable with external PNP transistor |
| Standby and Sleep Modes | Very low standby and sleep current with full wake-up capability | Pinning | 32 leads, body width 6.1 mm, lead pitch 0.65 mm |
Key Features
- Integrated High-Speed CAN Transceiver: Compatible with ISO 11898-2 and ISO 11898-5 standards.
- Dual LIN Transceivers: Compliant with LIN 2.1, LIN 2.0, and SAE J2602 standards.
- Voltage Regulator: 250 mA voltage regulator for supplying a microcontroller, extendable with an external PNP transistor.
- Advanced Watchdog: Programmable watchdog with independent clock source, supporting Window, Timeout, and Off modes.
- Low Power Modes: Standby and sleep modes with very low current consumption and full wake-up capability.
- Control and Diagnostic Features: Includes 16-bit Serial Peripheral Interface (SPI) for configuration, control, and diagnosis, along with global enable output and limp home output.
- Overtemperature Shutdown and Undervoltage Warning: Ensures safe and predictable behavior under all conditions.
Applications
The NXP UJA1078ATW/3V3/WDJ is primarily used in automotive and industrial control systems, particularly in Electronic Control Units (ECUs). It supports networking applications for controlling power and sensor peripherals through its high-speed CAN and LIN interfaces. This chip is suitable for use in various automotive systems, such as engine control, transmission control, and body control modules, as well as in industrial automation and robotics.
Q & A
- Q: What is the primary function of the UJA1078ATW/3V3/WDJ?
A: The UJA1078ATW/3V3/WDJ is a System Basis Chip (SBC) that integrates a high-speed CAN transceiver, two LIN transceivers, a voltage regulator, and an advanced watchdog, designed to support networking and power management in control units.
- Q: What are the key interfaces supported by the UJA1078ATW/3V3/WDJ?
A: The chip supports a high-speed CAN transceiver and two LIN transceivers.
- Q: What is the voltage regulator output of the UJA1078ATW/3V3/WDJ?
A: The voltage regulator output is 3.3 V, with a current capability of 250 mA, extendable with an external PNP transistor.
- Q: Does the UJA1078ATW/3V3/WDJ have a watchdog feature?
A: Yes, it includes an advanced independent watchdog with programmable modes.
- Q: What are the low power modes available in the UJA1078ATW/3V3/WDJ?
A: The chip supports standby and sleep modes with very low current consumption and full wake-up capability.
- Q: How does the UJA1078ATW/3V3/WDJ ensure safe operation?
A: It includes features such as overtemperature shutdown, undervoltage warning, and safe and predictable behavior under all conditions.
- Q: What is the package type of the UJA1078ATW/3V3/WDJ?
A: The chip is packaged in a HTSSOP32 (SOT549-1) package.
- Q: What are the typical applications of the UJA1078ATW/3V3/WDJ?
A: It is used in automotive and industrial control systems, particularly in Electronic Control Units (ECUs) for engine control, transmission control, and body control modules.
- Q: How can I obtain the datasheet for the UJA1078ATW/3V3/WDJ?
A: The datasheet can be downloaded from the official NXP website or through authorized distributors like Ovaga and Ariat-Tech.
- Q: What is the warranty period for the UJA1078ATW/3V3/WDJ when purchased from authorized distributors?
A: Authorized distributors like Ovaga offer a 1-year warranty on the UJA1078ATW/3V3/WDJ.
