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NXP Semiconductors UJA1061TW/5V0/C/T,
- Part No.:
- UJA1061TW/5V0/C/T,
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 32-TSSOP (0.240", 6.10mm Width) Exposed Pad
- Datasheet:
-
UJA1061TW/5V0/C/T,.pdf
- Description:
- IC INTFACE SPECIALIZED 32HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,418
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Product details
Overview
UJA1061TW/5V0/C/T from NXP Semiconductors is a fault-tolerant CAN/LIN System Basis Chip (SBC) designed for automotive ECUs. It integrates an ISO 11898-3-compliant CAN transceiver, LIN 2.0 transceiver, 5.0 V microcontroller regulator (V1), 5 V CAN transceiver regulator (V2), and an enhanced window watchdog with on-chip oscillator - all in a single HTSSOP32 package. It enables fail-safe system start-up, limp-home operation, and remote flash programming via CAN in 14 V and 42 V architectures.
For engineers reviewing the UJA1061TW/5V0/C/T datasheet, UJA1061TW/5V0/C/T pinout, UJA1061TW/5V0/C/T application, or UJA1061TW/5V0/C/T equivalent, key selection criteria include its dual-battery support (BAT14/BAT42), fail-safe coded SPI interface, autonomous watchdog supervision, and integrated bus protection (±60 V short-circuit proof CAN/LIN pins).
Technical Context
The UJA1061TW/5V0/C/T implements a state-machine-based fail-safe system controller supervised by an on-chip oscillator-clocked watchdog. Its operating modes - Start-up, Normal, Standby, Sleep, Fail-safe, and Flash - are strictly sequenced and transition-triggered by reset events, wake-up signals, or SPI commands, with detailed status reporting across 23 bits of access-protected RAM.
It features dual independent voltage regulation: V1 delivers regulated 5.0 V to the MCU (as specified by the /5V0 suffix), while V2 supplies 5 V to the CAN transceiver. The CAN transceiver supports partial networking with global wake-up, and both CAN and LIN transceivers include ground shift detection, clamping monitoring, and ±60 V short-circuit protection on bus pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CAN Standard | ISO 11898-3 compliant fault-tolerant transceiver; interoperable with TJA1054/TJA1054A/TJA1055 |
| LIN Standard | LIN 2.0 and SAE J2602 compliant; backward compatible with LIN 1.3 and TJA1020 |
| V1 Output | 5.0 V ±3 % regulated output for microcontroller; enabled/disabled per operating mode |
| V2 Output | 5 V regulated output dedicated to CAN transceiver; independent of V1 supply |
| Watchdog Type | Programmable fail-safe coded window & time-out watchdog with on-chip oscillator clock source |
| ESD Protection | ±8 kV HBM and ±6 kV IEC 61000-4-2 on off-board pins |
| Bus Fault Tolerance | ±60 V short-circuit proof CAN/LIN bus pins; ISO 7637 transient protection on BAT/CAN/LIN pins |
| Package | HTSSOP32 (SOT549-1); 6.1 mm × 11 mm body, 0.65 mm pitch, exposed die pad for thermal/EMC optimization |
Pinout & Package
UJA1061TW/5V0/C/T is housed in a 32-pin HTSSOP package (SOT549-1) with exposed die pad for enhanced thermal dissipation and improved EMC performance when connected to PCB ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V1 | Microcontroller supply output | Regulated 5.0 V output; powers MCU core and peripherals; controlled by operating mode |
| V2 | CAN transceiver supply output | 5 V dedicated regulator for CAN transceiver; isolated from V1 for robust bus operation |
| RSTN | Reset output | Active-low open-drain reset signal to MCU; detects external clamping and asserts during Fail-safe/Sleep entry |
| INTN | Interrupt output | Active-low open-drain interrupt to MCU; wire-AND capable; reports faults within tRSTN(INT) window |
| INH/LIMP | Inhibit/limp-home output | BAT14-referenced push-pull output; floats by default; drives warning lights or safety hardware in Fail-safe mode |
| WAKE | Local wake-up input | BAT42-referenced input; supports continuous or cyclic sampling for low-power wake-up triggering |
| CANH / CANL | CAN bus interface | Fault-tolerant differential bus lines; floating when unpowered; support ground shift detection and termination control (RTH/RTL) |
| LIN | LIN bus line | Single-wire LIN bus interface; LOW dominant; includes RTLIN termination connection |
| BAT14 / BAT42 | Power inputs | Dual battery inputs: BAT14 for 14 V systems; BAT42 for 42 V or dual-supply architectures (connected together in 14 V apps) |
| SCK / SDI / SDO / SCS | SPI interface | Full-duplex SPI with fail-safe coded protocol; SDO floats when SCS is HIGH; supports device identification and diagnostics |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe system controller | State-machine core with autonomous supervision; enters defined recovery paths (Start-up/Restart/Fail-safe) on oscillator failure, undervoltage, or illegal register access |
| Fail-safe coded SPI | Redundant-bit coding prevents spurious mode changes; ensures only valid watchdog and mode register writes are accepted |
| Partial networking support | Global wake-up capability allows selective CAN communication without waking sleeping nodes - reduces system power in idle states |
| Limp-home activation | INH/LIMP output asserts in Fail-safe mode to directly drive safety-critical hardware (e.g., dashboard warning lamps) without MCU intervention |
| Comprehensive diagnostics | Single-SPI-message reporting of 12+ fault types including CAN/LIN bus shorts/opens, TXD/RXD clamping, reset line faults, overtemperature, and ground shift |
| Cyclic wake-up capability | Supported in Standby and Sleep modes via watchdog timeout or local WAKE input; enables deterministic low-power polling without external timers |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) |
|---|---|
Use Scenario: Centralized vehicle lighting, door lock, and window control with networked sensor inputs and actuator drivers. IC Role / Device Role / Timing Role: UJA1061TW/5V0/C/T serves as primary power manager and fail-safe communication hub - regulating MCU voltage, enabling CAN/LIN connectivity, and asserting limp-home output if MCU fails. Use Value: Enables safe degradation (e.g., flashing hazard lights) during MCU lockup while maintaining LIN-controlled actuators and CAN diagnostics - meeting ASIL-B functional safety expectations. | Use Scenario: Real-time engine timing, fuel injection, and emissions control in 14 V/42 V hybrid architectures. IC Role / Device Role / Timing Role: UJA1061TW/5V0/C/T provides regulated 5.0 V to the engine MCU, isolated 5 V to CAN transceiver, and monitors bus integrity - detecting CANH/CANL shorts before misfire events occur. Use Value: Prevents false resets during load dump transients (ISO 7637-2 Pulse 5a) and maintains watchdog supervision even during V1 undervoltage - ensuring deterministic restart behavior after brownout. |
| Advanced Driver Assistance Systems (ADAS) ECU | Electric Power Steering (EPS) Control Unit |
Use Scenario: Sensor fusion unit aggregating radar, camera, and ultrasonic data with CAN FD backbone and LIN-connected proximity sensors. IC Role / Device Role / Timing Role: UJA1061TW/5V0/C/T manages power sequencing, provides fail-safe reset coordination between multiple MCUs, and enables remote firmware updates via CAN bus. Use Value: Supports secure flash programming through fail-safe coded SPI handshake and watchdog-protected boot sequence - critical for OTA update integrity in ASIL-C systems. | Use Scenario: High-reliability torque assist control with torque sensor feedback, motor driver enable, and CAN-based diagnostic reporting. IC Role / Device Role / Timing Role: UJA1061TW/5V0/C/T supplies stable 5.0 V to EPS MCU, monitors CAN bus health, and triggers INH/LIMP to disable motor driver and illuminate steering fault lamp upon detected CANL open-circuit. Use Value: Achieves <100 µA sleep current and detects CAN bus failures within 10 ms - meeting ISO 26262 ASIL-D fault reaction requirements for torque path monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fail-safe SBC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TJA1021T/CM,118 | LIN-only SBC; no CAN transceiver; 3.3 V V1 output; lacks watchdog window mode and fail-safe coded SPI | Targeted at LIN-sensor clusters without CAN backbone; unsuitable for dual-network ECUs requiring fault-tolerant CAN | Select only for cost-sensitive LIN-peripheral modules where CAN integration is unnecessary |
| UJA1075TW/5V0/C/T | Successor SBC with CAN FD support, higher V1 current (250 mA vs. 200 mA), extended temperature range (−40 °C to +150 °C), and enhanced SPI error detection | Required for next-gen ADAS/EPS designs needing CAN FD bandwidth and extended junction temperature operation | Prefer for new designs targeting CAN FD migration or >125 °C under-hood environments |
Compared with TJA1021T/CM,118 and UJA1075TW/5V0/C/T, the UJA1061TW/5V0/C/T offers proven ISO 11898-3 CAN + LIN integration in a mature AEC-Q100 qualified platform, with precise 5.0 V regulation and fail-safe behavior optimized for legacy and mid-life-cycle automotive ECUs.
Availability
UJA1061TW/5V0/C/T is available at Aetrix Electronics and suitable for Body Control Modules, Engine Control Units, ADAS sensor fusion units, and Electric Power Steering systems requiring stable component supply, long-term automotive lifecycle support, and fail-safe power management.
Supply support for UJA1061TW/5V0/C/T 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 UJA1061TW/5V0/C/T belongs to NXP's System Basis Chip product line, engineered specifically to consolidate power, communication, and safety functions into single-package solutions for automotive electronic control units operating in harsh 14 V/42 V environments.
FAQ
What is the regulated output voltage of the V1 pin on the UJA1061TW/5V0/C/T?
The V1 pin on the UJA1061TW/5V0/C/T delivers a precisely regulated 5.0 V ±3 % output for powering the host microcontroller. This specification is confirmed by the "/5V0" suffix in the part number and verified in Section 2.1 of the official NXP datasheet. The regulator is active in Start-up, Normal, Standby, and Flash modes, and disabled in Sleep and Fail-safe modes to minimize quiescent current.
Does the UJA1061TW/5V0/C/T support both 14 V and 42 V battery architectures?
Yes, the UJA1061TW/5V0/C/T supports dual battery architectures via dedicated BAT14 and BAT42 inputs. In 14 V systems, BAT42 is connected to BAT14; in 42 V or dual-supply systems, BAT42 operates independently. This design enables use in conventional 12 V/14 V vehicles and next-generation 36 V/42 V hybrid platforms, as documented in Sections 1 and 6.1 of the datasheet.
How does the fail-safe watchdog on the UJA1061TW/5V0/C/T differ from standard window watchdogs?
The UJA1061TW/5V0/C/T watchdog uses fail-safe coded access: only ten valid period codes and six valid operating mode codes are accepted via SPI. Illegal codes trigger immediate reset. It also synchronizes mode transitions with watchdog service reads, preventing race conditions. Unlike generic watchdogs, it monitors RSTN clamping and integrates with the on-chip oscillator - entering Fail-safe mode if oscillator frequency deviates beyond tolerance.
What is the function of the INH/LIMP pin on the UJA1061TW/5V0/C/T?
The INH/LIMP pin on the UJA1061TW/5V0/C/T is a BAT14-referenced push-pull output that defaults to floating. In Fail-safe mode, it actively drives LOW or HIGH to activate safety hardware - such as dashboard warning lamps or relay cutoff circuits - independent of MCU operation. Its behavior is programmable via SPI and is explicitly intended for limp-home functionality, as defined in Sections 2.5 and 6.2.3 of the datasheet.
Is the UJA1061TW/5V0/C/T pin-compatible with other members of the UJA106x family?
No, the UJA1061TW/5V0/C/T is not pin-compatible with other UJA106x variants like UJA1062 or UJA1063. While sharing the HTSSOP32 package and many functional blocks, pin assignments differ - notably for V1/V2 configuration, SYSINH, and RTL/RTH connections. The datasheet confirms unique pin mapping in Table 2, and substitution requires PCB layout revision and firmware adaptation due to register-level differences in watchdog coding and mode control.
UJA1061TW/5V0/C/T, 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 ~ 27V
- Supplier Device Package:
- 32-HTSSOP
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
UJA1061TW/5V0/C/T, FAQ
1.How can I place an order for UJA1061TW/5V0/C/T, through Aetrix?
Please submit a Request for Quotation (RFQ) for UJA1061TW/5V0/C/T, 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 UJA1061TW/5V0/C/T, reliable?
The price and inventory of UJA1061TW/5V0/C/T, are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UJA1061TW/5V0/C/T, is usually 5 days.
3.What payment methods are accepted for UJA1061TW/5V0/C/T,?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UJA1061TW/5V0/C/T, transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UJA1061TW/5V0/C/T,?
UJA1061TW/5V0/C/T, orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UJA1061TW/5V0/C/T, 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 UJA1061TW/5V0/C/T,?
For technical support, including UJA1061TW/5V0/C/T, datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UJA1061TW/5V0/C/T, requirements.
6.How does Aetrix verify that UJA1061TW/5V0/C/T, is sourced from the original manufacturer or authorized distributors?
All UJA1061TW/5V0/C/T, 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 UJA1061TW/5V0/C/T, meets industry standards.
7.What is the process for return or replacement of UJA1061TW/5V0/C/T,?
All UJA1061TW/5V0/C/T, units undergo pre-shipment inspection (PSI). If there is an issue with UJA1061TW/5V0/C/T,, 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 UJA1061TW/5V0/C/T, part is unused and in its original packaging.
Return procedure for UJA1061TW/5V0/C/T,:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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