UJA1076TW/3V3/WD:1

Specialized Overview

The UJA1076TW/3V3/WD:1 is a high-speed CAN core System Basis Chip (SBC) from NXP Semiconductors, designed for automotive Electronic Control Units (ECUs). It integrates a high-speed CAN transceiver compliant with ISO 11898-2 and ISO 11898-5 standards, an advanced independent watchdog, and two voltage regulators. The main regulator V1 provides a scalable 3.3 V output delivering up to 250 mA for the microcontroller, while a separate V2 regulator supplies the on-board CAN transceiver. The device features a full-duplex Serial Peripheral Interface (SPI), two local wake-up input ports, and a limp-home output port. It operates within a battery supply range of 4.5 V to 28 V and supports remote flash programming via the CAN bus.

Specialized Feature Summary

• Integrates a high-speed CAN transceiver compatible with TJA1042 and ISO 11898-2/ISO 11898-5 standards
• Includes an advanced independent watchdog with Window, Timeout, and Off modes supported by an on-chip oscillator
• Features a scalable 3.3 V main voltage regulator capable of delivering up to 250 mA for microcontroller power
• Provides detailed status reporting and control via a 16-bit full-duplex Serial Peripheral Interface (SPI)
• Supports safe system start-up behavior and low-power concepts including Standby and Sleep modes

Specialized Applications

• Automotive Electronic Control Unit (ECU) networking applications
• Power and sensor peripheral control systems using high-speed CAN as the main interface
• Microcontroller-based systems requiring integrated power management and CAN communication
• Remote flash programming implementations over CAN bus networks

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm regulatory compliance and package details. Confirm that the component meets RoHS and dark green requirements for your target market. Ensure compatibility with the intended microcontroller interface before procurement.

Specialized Selection Notes

Select this variant when a 3.3 V output is required for the microcontroller supply. Compare against the 5 V version if higher voltage regulation is needed. Consider the WD suffix for integrated watchdog functionality versus non-WD versions. Evaluate thermal dissipation requirements given the HTSSOP32 package constraints.

Specialized Part Context

This component belongs to the UJA1076 family of high-speed CAN core system basis chips. It serves as a replacement for discrete components in ECUs, consolidating CAN transceiver, power management, and diagnostic functions into a single package. The family includes variants with different voltage outputs and watchdog configurations.

Specialized Replacement Considerations

The datasheet notes downward compatibility with the TJA1042 CAN transceiver. Verify pinout and register map compatibility if substituting with other NXP SBCs like the UJA1075 or UJA1078 series.