UJA1076ATW/3V3/WD,

Specialized Overview

The UJA1076ATW/3V3/WD is a high-speed CAN core system basis chip (SBC) from NXP Semiconductors. It integrates a high-speed CAN transceiver compliant with ISO 11898-2 and ISO 11898-5, an advanced independent watchdog, and two voltage regulators. The main regulator V1 provides 3.3 V output at up to 250 mA for microcontroller supply, while the separate regulator V2 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 voltage range of 4.5 V to 28 V and supports data rates up to 1 Mb/s.

Specialized Feature Summary

• Integrates a high-speed CAN transceiver compatible with TJA1042 and automotive standards
• Includes an advanced independent watchdog with Window and Timeout modes
• Features scalable 3.3 V or 5 V voltage regulators delivering up to 250 mA
• Provides enhanced EMC performance and robust ESD protection

Specialized Applications

• Electronic Control Units (ECU) in automotive networks
• Power and sensor peripheral control applications
• Remote flash programming via CAN bus

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm the integrated voltage regulator output level and watchdog presence. Confirm package type HTSSOP32 matches the design requirements. Check for any recent product change notices regarding pinout or electrical characteristics before finalizing procurement.

Specialized Selection Notes

Select this component when a single-chip solution for CAN communication and power management is required. Ensure the 3.3 V regulator version meets the microcontroller supply needs. Consider the external PNP transistor option if higher current capability or better thermal distribution across the PCB is necessary for the application.

Specialized Part Context

The UJA1076A series replaces discrete components commonly found in ECUs. It combines CAN transceiver, voltage regulation, and watchdog functions into one package. This integration reduces board space and simplifies design compared to using separate components for each function.

Specialized Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.