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Home > Products > Integrated Circuits (ICs) > Interface > Specialized

NXP Semiconductors UJA1065TW/5V0,518

Name: UJA1065TW/5V0,518
Brand: NXP Semiconductors
SKU: UJA1065TW/5V0,518
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: UJA1065TW/5V0,518

Manufacturer:: NXP Semiconductors

Category:: Specialized

Package:: 32-TSSOP (0.240", 6.10mm Width) Exposed Pad

Datasheet:: UJA1065TW/5V0,518.pdf

Description:: IC INTFACE SPECIALIZED 32HTSSOP

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Product details

Overview

UJA1065TW/5V0,518 from NXP Semiconductors is a fail-safe System Basis Chip (SBC) integrating high-speed CAN and LIN transceivers, dual voltage regulators (5.0 V for MCU and 5 V for CAN), an enhanced window watchdog with on-chip oscillator, SPI interface, and limp-home output. It serves as the central power, communication, and safety supervisor in automotive ECUs requiring ISO 11898-2/5 and LIN 2.0 compliance, such as body control modules and gateway units.

For engineers reviewing the UJA1065TW/5V0,518 datasheet, UJA1065TW/5V0,518 pinout, UJA1065TW/5V0,518 application, or UJA1065TW/5V0,518 equivalent, this device delivers deterministic fail-safe behavior, battery-supply flexibility (14 V/42 V), detailed diagnostics reporting via SPI, and autonomous system supervision without external timing components.

Technical Context

The UJA1065TW/5V0,518 implements a state-machine-based fail-safe controller supervised by an on-chip oscillator-clocked watchdog, supporting six distinct operating modes (Start-up, Restart, Normal, Standby, Sleep, Flash) with programmable transitions via SPI. Its CAN transceiver includes SPLIT output for recessive bus stabilization and partial networking support; the LIN transceiver supports LIN 2.0, SAE J2602, and backward compatibility with LIN 1.3.

Power management integrates three regulated outputs: V1 (5.0 V ±2 %, 150 mA), V2 (5 V, 100 mA), and V3 (unregulated 42 V, cyclic or continuous), plus BAT14/BAT42 dual-supply handling and SYSINH-controlled DC-DC enable. Fail-safe features include clamped-reset detection, overtemperature warning, 23-bit protected RAM for diagnostics logging, and fail-safe coded SPI with unique device identification.

Key Specifications

Parameter	Value and Actual Design Meaning
CAN Standard	ISO 11898-2 and ISO 11898-5 compliant; enables interoperability with TJA1041/TJA1041A and robust EMC performance.
LIN Standard	LIN 2.0 and SAE J2602 compliant; downward compatible with LIN 1.3 and TJA1020 for legacy subsystem integration.
V1 Output	5.0 V ±2 %, 150 mA regulator for microcontroller; version-specific (UJA1065TW/5V0 denotes 5 V variant).
Watchdog Type	Programmable window/time-out watchdog with on-chip oscillator; prevents deadlock via strict software supervision in Normal mode.
Package	HTSSOP32 (SOT549-1); 6.1 mm × 11 mm body, 0.65 mm pitch, exposed die pad for thermal dissipation and EMC optimization.
ESD Protection	±8 kV HBM and ±4 kV IEC 61000-4-2 on off-board pins; ensures robustness in automotive assembly and field environments.
Bus Fault Tolerance	±60 V short-circuit proof CAN/LIN pins; withstands load-dump and jump-start transients per ISO 7637-3.

Pinout & Package

UJA1065TW/5V0,518 is housed in a 32-pin HTSSOP package (SOT549-1) with 6.1 mm × 11 mm footprint, 0.65 mm lead pitch, and exposed die pad for thermal and EMC performance. The die pad is electrically isolated and may be connected to GND.

Pin/Terminal	Circuit Role	Design Meaning
V1	Microcontroller supply output	5.0 V regulated output (±2 %, 150 mA); powers host MCU and defines device variant (5V0).
V2	CAN transceiver supply output	5 V regulated output (100 mA); independent of V1, guarded by CAN-bus failure management.
TXDC / RXDC	CAN data interface	CMOS-level inputs/outputs for CAN controller connection; supports dominant/recessive logic levels.
CANH / CANL	CAN bus physical interface	Differential bus lines compliant with ISO 11898-2; floating when unpowered, SPLIT-stabilized recessive level.
TXDL / RXDL	LIN data interface	CMOS-level inputs/outputs for LIN controller; compatible with LIN 2.0 and legacy 1.3 protocols.
LIN / RTLIN	LIN bus physical interface	LIN bus line and internal termination resistor connection; supports single-wire bus topology.
RSTN	Reset output	Active-low open-drain reset signal to MCU; detects clamping and provides reset lengthening in Start-up mode.
INTN	Interrupt output	Active-low open-drain interrupt; wire-AND capable for multi-ECU interrupt sharing.
INH/LIMP	Inhibit/limp-home output	BAT14-referenced push-pull output; floats by default, drives warning lights or safety relays in Fail-safe mode.
WAKE	Local wake-up input	BAT42-referenced input with cyclic sampling; triggers wake-up from Sleep/Standby without bus activity.
BAT14 / BAT42	Power supply inputs	Dual battery inputs for 14 V and 42 V architectures; BAT42 used in 42 V systems, tied to BAT14 in 14 V designs.
SCK / SDI / SDO / SCS	SPI interface	Full-duplex SPI (SCK, SDI, SDO, active-low SCS); fail-safe coded for reliable microcontroller communication.

Key Features

Feature	Design Value
Fail-safe state machine	Autonomous six-mode operation (Start-up, Normal, Standby, Sleep, Flash, Fail-safe) with deterministic transitions and reset-source reporting.
Diagnostic RAM	23 bits of access-protected RAM for logging cyclic faults, enabling post-failure root-cause analysis without external memory.
Partial networking	Global wake-up capability allows selective CAN communication while keeping other nodes asleep, reducing system-wide current draw.
Supply failure early warning	Undervoltage detection on V1 and BAT supplies triggers SPI-reportable alerts, allowing critical data save before shutdown.
Thermal-aware design	Exposed die pad and low thermal resistance HTSSOP32 package enable stable operation under sustained 125 °C ambient conditions.

Applications

Body Control Module (BCM)	Gateway ECU
Use Scenario: Centralized control of lighting, door locks, windows, and climate functions in modern vehicles. IC Role / Device Role / Timing Role: Primary SBC providing regulated power (V1/V2), CAN/LIN connectivity, watchdog supervision, and limp-home signaling during fault conditions. Use Value: Enables deterministic fail-safe behavior and detailed diagnostics reporting via SPI, reducing need for discrete protection circuitry and simplifying ECU BOM.	Use Scenario: Aggregation and translation between high-speed CAN backbone and low-speed LIN sub-networks in vehicle networks. IC Role / Device Role / Timing Role: Dual-interface SBC managing power sequencing, bus arbitration, and wake-up coordination across multiple domains. Use Value: Supports partial networking and global wake-up, minimizing quiescent current in sleep states while maintaining real-time responsiveness.
Engine Control Unit (ECU)	Advanced Driver Assistance Systems (ADAS) Sensor Hub
Use Scenario: Power and communication management for engine sensors, actuators, and emission control subsystems. IC Role / Device Role / Timing Role: Safety-critical SBC delivering battery-supply flexibility (14 V/42 V), overtemperature warning, and clamped-reset detection. Use Value: Ensures uninterrupted microcontroller operation during transient events (e.g., load dump), meeting ASIL-B functional safety requirements.	Use Scenario: Local power and interface management for radar, camera, or ultrasonic sensor clusters in ADAS domain controllers. IC Role / Device Role / Timing Role: Fail-safe SBC supplying regulated V1/V2, monitoring bus integrity (CAN/LIN), and triggering limp-home signals upon fault detection. Use Value: Provides 23-bit protected RAM for logging intermittent sensor errors and supports remote flash programming via CAN bus.

Body Control Module (BCM)

Gateway ECU

Use Scenario: Centralized control of lighting, door locks, windows, and climate functions in modern vehicles.

IC Role / Device Role / Timing Role: Primary SBC providing regulated power (V1/V2), CAN/LIN connectivity, watchdog supervision, and limp-home signaling during fault conditions.

Use Value: Enables deterministic fail-safe behavior and detailed diagnostics reporting via SPI, reducing need for discrete protection circuitry and simplifying ECU BOM.

Use Scenario: Aggregation and translation between high-speed CAN backbone and low-speed LIN sub-networks in vehicle networks.

IC Role / Device Role / Timing Role: Dual-interface SBC managing power sequencing, bus arbitration, and wake-up coordination across multiple domains.

Use Value: Supports partial networking and global wake-up, minimizing quiescent current in sleep states while maintaining real-time responsiveness.

Engine Control Unit (ECU)

Advanced Driver Assistance Systems (ADAS) Sensor Hub

Use Scenario: Power and communication management for engine sensors, actuators, and emission control subsystems.

IC Role / Device Role / Timing Role: Safety-critical SBC delivering battery-supply flexibility (14 V/42 V), overtemperature warning, and clamped-reset detection.

Use Value: Ensures uninterrupted microcontroller operation during transient events (e.g., load dump), meeting ASIL-B functional safety requirements.

Use Scenario: Local power and interface management for radar, camera, or ultrasonic sensor clusters in ADAS domain controllers.

IC Role / Device Role / Timing Role: Fail-safe SBC supplying regulated V1/V2, monitoring bus integrity (CAN/LIN), and triggering limp-home signals upon fault detection.

Use Value: Provides 23-bit protected RAM for logging intermittent sensor errors and supports remote flash programming via CAN bus.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fail-safe SBC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
UJA1075TW/5V0,518	Includes integrated 42 V high-side switch (42 V/2 A) and enhanced LIN 2.2 support; same HTSSOP32 package and SPI register map.	Required where external relay/actuator drive is needed without discrete high-side switches; supports newer LIN protocol extensions.	Select UJA1075TW/5V0,518 when 42 V load switching and LIN 2.2 compliance are mandatory; otherwise UJA1065TW/5V0,518 offers lower cost and identical core functionality.
TJA1021T/CM,118	Standalone LIN transceiver only; no CAN, regulators, watchdog, or SPI; SO8 package; lacks fail-safe supervision or power management.	Used only for LIN-only nodes where full SBC integration is unnecessary; requires external MCU power and supervision circuitry.	Choose TJA1021T/CM,118 only for simple LIN slave nodes; UJA1065TW/5V0,518 is not substitutable due to fundamental functional scope difference.

Compared with UJA1065TW/5V0,518, UJA1075TW/5V0,518 adds integrated high-side switching but maintains pin and firmware compatibility, whereas TJA1021T/CM,118 serves a narrower role and cannot replace the UJA1065TW/5V0,518's system-level supervision and dual-bus integration.

Availability

UJA1065TW/5V0,518 is available at Aetrix Electronics and suitable for automotive body control modules, gateway ECUs, and engine control units requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualified reliability.

Supply support for UJA1065TW/5V0,518 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in automotive-grade analog and mixed-signal ICs.

The UJA1065TW/5V0,518 belongs to NXP's System Basis Chip product line, designed specifically to consolidate power, communication, and safety functions into single-package solutions for automotive electronic control units.

FAQ

What is the primary function of the UJA1065TW/5V0,518 in an automotive ECU?

The UJA1065TW/5V0,518 serves as a fail-safe System Basis Chip that integrates high-speed CAN and LIN transceivers, dual voltage regulators (5.0 V for MCU and 5 V for CAN), an enhanced watchdog, SPI interface, and limp-home output. It replaces discrete power and interface components in automotive ECUs, ensuring deterministic start-up, robust fault handling, and comprehensive diagnostics reporting via SPI - all critical for ASIL-B–level systems.

How does the UJA1065TW/5V0,518 support both 14 V and 42 V automotive architectures?

The UJA1065TW/5V0,518 supports dual-supply architectures through dedicated BAT14 (14 V) and BAT42 (42 V) inputs. In 14 V systems, BAT42 is connected to BAT14; in 42 V systems, BAT42 operates independently. Its V3 output provides unregulated 42 V for external wake-up switches, and its regulators (V1, V2) remain stable across input variations, with protection per ISO 7637-3.

What distinguishes the watchdog behavior of the UJA1065TW/5V0,518 in Normal mode versus Standby mode?

In Normal mode, the UJA1065TW/5V0,518 watchdog operates in programmable Window mode - detecting both too-early and too-late service to ensure MCU timing integrity. In Standby mode, it defaults to Time-out mode, enabling cyclic wake-up without reset, and can be disabled entirely if V1 supply current drops below IthL(V1), verified autonomously by the SBC's current monitor.

Can the UJA1065TW/5V0,518 perform remote firmware updates, and how is this implemented?

Yes, the UJA1065TW/5V0,518 supports remote flash programming via the CAN bus. This is enabled through its Flash mode entry sequence (SPI writes of 111/001/111 to the Mode register), which initiates a secure handshake with the host MCU. Once in Flash mode, the UJA1065TW/5V0,518 maintains time-out watchdog supervision and allows safe, verified firmware upload without requiring physical access.

What diagnostic capabilities does the UJA1065TW/5V0,518 provide, and how are they accessed?

The UJA1065TW/5V0,518 provides 23 bits of access-protected RAM for logging cyclic faults, plus real-time reporting of 12+ failure types (e.g., CAN/LIN bus shorts, V1 undervoltage, oscillator failure, overtemperature) in a single SPI message. Diagnostics are accessed via the fail-safe coded SPI interface, eliminating need for multi-frame assembly and enabling rapid root-cause analysis in production and service environments.

UJA1065TW/5V0,518 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

Package/Case:: 32-TSSOP (0.240", 6.10mm Width) Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Applications:: Networking

Interface:: CAN, LIN

Voltage - Supply:: 5.5V ~ 52V

Supplier Device Package:: 32-HTSSOP

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

UJA1065TW/5V0,518 FAQ

1.How can I place an order for UJA1065TW/5V0,518 through Aetrix?

Please submit a Request for Quotation (RFQ) for UJA1065TW/5V0,518 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for UJA1065TW/5V0,518 reliable?

The price and inventory of UJA1065TW/5V0,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UJA1065TW/5V0,518 is usually 5 days.

3.What payment methods are accepted for UJA1065TW/5V0,518?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UJA1065TW/5V0,518 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for UJA1065TW/5V0,518?

UJA1065TW/5V0,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your UJA1065TW/5V0,518 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for UJA1065TW/5V0,518?

For technical support, including UJA1065TW/5V0,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UJA1065TW/5V0,518 requirements.

6.How does Aetrix verify that UJA1065TW/5V0,518 is sourced from the original manufacturer or authorized distributors?

All UJA1065TW/5V0,518 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that UJA1065TW/5V0,518 meets industry standards.

7.What is the process for return or replacement of UJA1065TW/5V0,518?

All UJA1065TW/5V0,518 units undergo pre-shipment inspection (PSI). If there is an issue with UJA1065TW/5V0,518, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The UJA1065TW/5V0,518 part is unused and in its original packaging.

Return procedure for UJA1065TW/5V0,518:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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