UJA1069TW24/5V0/C,

Specialized Overview

The UJA1069TW24/5V0/C, is a LIN fail-safe System Basis Chip (SBC) manufactured by NXP Semiconductors. It integrates a LIN transceiver compliant with LIN 2.0 and SAE J2602, a dedicated 5.0 V voltage regulator for the microcontroller, an enhanced window watchdog with an on-chip oscillator, and a full-duplex Serial Peripheral Interface (SPI). The device supports 14 V and 42 V power supply architectures and includes features such as a local wake-up input, inhibit/limp-home output, and system inhibit output. It is housed in a 24-lead HTSSOP package (SOT864-1) designed for automotive Electronic Control Units (ECUs).

Specialized Feature Summary

• Integrates a LIN transceiver compliant with LIN 2.0, SAE J2602, and backward compatible with LIN 1.3.
• Includes an advanced independent watchdog with an on-chip oscillator for autonomous system supervision.
• Features a dedicated 5.0 V voltage regulator for the microcontroller and a full-duplex SPI interface.
• Provides intelligent low-power management with safe start-up behavior and detailed failure reporting.

Specialized Applications

• Automotive Electronic Control Units (ECUs) requiring LIN communication.
• Networking applications controlling power and sensor peripherals via a local sub-bus.
• Systems utilizing 14 V or 42 V single and dual power supply architectures.

Specialized Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific ordering suffix matches the required package variant and temperature range. Ensure compliance with RoHS directives and relevant automotive standards before integration into production systems.

Specialized Selection Notes

Select this component for designs requiring integrated LIN communication and robust fail-safe monitoring within a single package. Consider the HTSSOP24 package constraints and thermal requirements. Verify compatibility with the target microcontroller's SPI interface and voltage regulator needs.

Specialized Part Context

This part belongs to the UJA1069 family of LIN fail-safe System Basis Chips from NXP Semiconductors. It is designed to replace discrete components in ECUs by combining power management, communication, and safety functions. The TW24 suffix indicates the 24-lead HTSSOP package version.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative SBCs based on pin compatibility, voltage regulator specifications, and LIN protocol support if replacement is necessary.

Specialized FAQ

What LIN standards does the UJA1069 support?

The UJA1069 features a LIN transceiver compliant with LIN 2.0 and SAE J2602, and is downward compatible with LIN 1.3.

How does the UJA1069 handle system failures?

It employs an advanced fail-safe system that detects various faults, reports them via SPI, and can enter a Fail-safe mode to prevent deadlocks while maintaining minimal power consumption.

What power supply architectures are supported?

The UJA1069 is designed for 14 V single power supply architectures as well as 14 V and 42 V dual power supply architectures.