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NXP Semiconductors UJA1169ATK/X/FZ
- Part No.:
- UJA1169ATK/X/FZ
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 20-VFDFN Exposed Pad
- Datasheet:
-
UJA1169ATK/X/FZ.pdf
- Description:
- IC MINI-CAN SYSTEM BASIS CHIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,880
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Product details
Overview
UJA1169ATK/X/FZ from NXP Semiconductors is a mini high-speed CAN System Basis Chip (SBC) integrating an ISO 11898-2:2016 and SAE J2284-1–5 compliant HS-CAN transceiver supporting CAN FD up to 5 Mbit/s, a scalable 5 V/250 mA microcontroller supply (V1), a protected 5 V/100 mA off-board sensor supply (VEXT), SPI interface, watchdog, and LIMP fault signaling. It enables automotive body control modules requiring partial networking and CAN FD-passive wake-up.
For engineers reviewing the UJA1169ATK/X/FZ datasheet, UJA1169ATK/X/FZ pinout, UJA1169ATK/X/FZ application, or UJA1169ATK/X/FZ equivalent, this page delivers verified electrical specifications, validated pin functions, confirmed partial networking behavior, real-world automotive use cases, and two rigorously cross-checked alternative parts with documented functional distinctions.
Technical Context
The UJA1169ATK/X/FZ implements a fully autonomous ISO 11898-2:2016-compliant CAN physical layer with floating bus pins when BAT is unpowered, and supports selective wake-up frame detection with CAN FD-passive mode-allowing classic CAN controllers to remain in Sleep during CAN FD traffic without bus errors. Its internal transceiver is powered directly from V1 (not V2), distinguishing it from non-/X variants.
Power management includes three distinct low-power states: Normal (V1 active, CAN active), Standby (V1 active, CAN offline), and Sleep (V1 off, CAN offline, wake-up via CAN/WAKE only). Configuration of reset thresholds, watchdog timing (8 ms–4 s), and limp-home activation is stored in non-volatile memory and accessible via 16-/24-/32-bit SPI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CAN Compliance | ISO 11898-2:2016 and SAE J2284-1 to J2284-5; enables interoperability with automotive CAN FD networks up to 5 Mbit/s data field rate |
| V1 Supply | 5 V ±2 %, 250 mA; powers microcontroller and internal transceiver; shuts off in Sleep mode to minimize quiescent current |
| VEXT Supply | 5 V ±2 %, 100 mA; short-circuit proof to BAT, GND, and −18 V; supplies external sensors without risk of battery drain or reverse-voltage damage |
| Partial Networking | ISO 11898-2:2016 selective wake-up with CAN FD-passive; prevents false wake-ups during CAN FD frames while retaining classic CAN wake capability |
| Watchdog | Configurable Window/Timeout/Autonomous modes; period selectable from 8 ms to 4 s; independent clock source ensures reliability during microcontroller faults |
| LIMP Output | Open-drain, active-low signal triggered by overtemperature, watchdog failure, or RSTN clamping; provides fail-safe system-level fault indication |
| ESD Protection | ±6 kV IEC TS 62228 on BAT, WAKE, VEXT, CANH/CANL; ±8 kV HBM on CAN pins; meets automotive robustness requirements |
Pinout & Package
UJA1169ATK/X/FZ uses the HVSON20 leadless package (3.5 mm × 5.5 mm × 0.85 mm) with exposed die pad for thermal and electrical grounding. Pin count is 20; pin pitch is 0.5 mm; RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4, 16, 19) | Ground reference | Four dedicated ground terminals ensure low-impedance return paths for V1, VEXT, CAN, and digital logic; exposed pad must be connected to PCB ground |
| V1 (Pin 5) | Microcontroller supply output | 5 V ±2 % regulated output; powers MCU and internal transceiver; disabled in Sleep mode to reduce system standby current |
| VEXT (Pin 13) | Off-board sensor supply | 5 V ±2 %, 100 mA; short-circuit proof to BAT/GND/−18 V; controlled via SPI; exclusive to /X and /X/F variants |
| BAT (Pin 14) | Battery input | Accepts 5.5 V to 40 V automotive battery range; protected against ISO 7637-3 transients; powers all internal regulators |
| CANH / CANL (Pins 18, 17) | CAN bus differential pair | High-speed CAN physical layer interface; supports dominant/recessive states and wake-up pattern detection; floating when BAT = 0 V |
| RXD / TXD (Pins 7, 2) | CAN logic interface | RXD reflects bus state and wake events; TXD accepts MCU transmit signals; isolated from bus faults by internal transceiver |
| SPI (Pins 3, 9, 10, 20) | Serial Peripheral Interface | SDI/SDO/SCK/SCSN support 16-/24-/32-bit transfers for configuration, diagnostics, and register access; operates in Standby mode |
| WAKE (Pin 12) | Local wake input | Active-high edge-triggered input enabling wake from Sleep/Standby; debounced internally; does not require external pull-up |
| LIMP (Pin 11) | Fault signaling output | Open-drain, active-low; asserts on overtemperature, watchdog timeout, or RSTN clamping; drives external fault indicator or safety controller |
| RSTN (Pin 8) | Bidirectional reset | Active-low reset input/output; configurable power-on reset length via NVM; clamps LOW during LIMP events |
Key Features
| Feature | Design Value |
|---|---|
| CAN FD-passive partial networking | Enables Sleep-mode retention during CAN FD traffic while preserving selective wake-up for classic CAN frames-eliminating bus errors in mixed-speed networks |
| VEXT short-circuit protection | Withstands short-to-battery, short-to-ground, and reverse-voltage down to −18 V-enabling safe direct connection to external sensors without external protection circuitry |
| Autonomous bus biasing | Maintains ISO 11898-2:2016-compliant common-mode voltage (≈2.5 V active, ≈0 V silent) without external resistors-reducing BOM count and layout complexity |
| Non-volatile configuration storage | Stores reset thresholds, watchdog period, limp activation level, and sleep enable/disable state-ensuring consistent power-on behavior across production units and field updates |
| Thermal shutdown with warning | Issues OTWS flag at Tth(warn)otp before entering Overtemp mode; allows host MCU to initiate thermal mitigation before critical shutdown |
Applications
| Body Control Module (BCM) | Door Module |
|---|---|
Use Scenario: Centralized control of lighting, windows, locks, and mirrors in modern vehicles with distributed ECUs. IC Role / Device Role / Timing Role: UJA1169ATK/X/FZ serves as the primary CAN interface and power manager-providing regulated V1 for the BCM MCU, VEXT for door position sensors, and CAN FD communication with gateway. Use Value: Enables ultra-low Sleep current (<10 µA) with reliable CAN FD wake-up, reducing parasitic drain while supporting next-gen diagnostic bandwidth. | Use Scenario: Smart door module integrating window lift, mirror fold, and anti-pinch sensing with CAN connectivity. IC Role / Device Role / Timing Role: UJA1169ATK/X/FZ supplies 5 V to the door MCU (V1) and 5 V to Hall-effect position sensors (VEXT), while handling partial-network wake-up from gateway or key fob commands. Use Value: VEXT's −18 V reverse-voltage tolerance eliminates need for external diode protection, simplifying sensor interface design and improving field reliability. |
| Roof Module | Seat Control Unit |
Use Scenario: Sunroof, panoramic roof, and ambient lighting control with CAN FD diagnostics and ECU coordination. IC Role / Device Role / Timing Role: UJA1169ATK/X/FZ acts as the roof ECU's SBC-supplying V1 to the roof MCU, VEXT to ambient light sensors, and supporting CAN FD passive wake-up during gateway-initiated firmware updates. Use Value: CAN FD-passive mode prevents unintended wake-up during background CAN FD traffic, extending module sleep duration by >90% in typical vehicle operation. | Use Scenario: Motorized seat positioning with position feedback, heating, and memory function linked to vehicle CAN network. IC Role / Device Role / Timing Role: UJA1169ATK/X/FZ provides V1 for seat MCU, VEXT for potentiometer and temperature sensors, and robust CAN interface with LIMP signaling for thermal fault reporting. Use Value: Integrated overtemperature warning and shutdown protect seat motors from stall-induced overheating-triggering LIMP to alert body domain controller before hardware damage occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CAN SBC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UJA1169ATK/X | No partial networking or CAN FD-passive support; lacks selective wake-up frame detection logic | Suitable for legacy CAN-only networks where wake-up is exclusively via standard pattern | Select UJA1169ATK/X only if CAN FD traffic is absent and full partial networking functionality is unnecessary |
| TJA1145A | Single 5 V/250 mA supply (no VEXT); supports CAN FD up to 5 Mbit/s but no CAN FD-passive mode; different SPI register map and watchdog architecture | Designed for cost-sensitive gateways and junction boxes without off-board sensor supply needs | Choose TJA1145A when VEXT is not required and board space constraints favor smaller footprint (HVQFN24 vs HVSON20) |
Compared with UJA1169ATK/X/FZ, UJA1169ATK/X omits CAN FD-passive wake-up-limiting its use in mixed-speed networks-while TJA1145A removes VEXT entirely and restructures diagnostics, making it unsuitable for sensor-rich modules requiring protected external supply rails.
Availability
UJA1169ATK/X/FZ is available at Aetrix Electronics and suitable for automotive body control modules, door modules, roof systems, and seat control units requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 qualified CAN FD infrastructure.
Supply support for UJA1169ATK/X/FZ 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 CAN, SBC, and automotive-grade power management.
The UJA1169A product line is engineered specifically for automotive body electronics, delivering integrated CAN FD transceivers, multi-rail power supplies, and robust diagnostics in compact HVSON packages to simplify ECU design and improve system-level reliability.
FAQ
What is the maximum CAN FD data rate supported by the UJA1169ATK/X/FZ?
The UJA1169ATK/X/FZ supports CAN FD active communication up to 5 Mbit/s in the data field, as specified in ISO 11898-2:2016. This applies to both classic CAN arbitration and CAN FD data phases. The transceiver maintains signal integrity and timing compliance across the full 5 Mbit/s range under automotive temperature and voltage conditions.
Does the UJA1169ATK/X/FZ provide an external sensor supply, and what protections does it include?
Yes, the UJA1169ATK/X/FZ provides VEXT-a dedicated 5 V/100 mA off-board sensor supply on Pin 13. It is short-circuit proof to battery, ground, and negative voltages down to −18 V. This eliminates the need for external reverse-polarity or overvoltage protection when powering Hall sensors, potentiometers, or ambient light detectors.
How does CAN FD-passive partial networking work in the UJA1169ATK/X/FZ?
In the UJA1169ATK/X/FZ, CAN FD-passive partial networking allows the device to remain in Sleep or Standby mode during CAN FD traffic while still detecting selective wake-up frames defined in ISO 11898-2:2016. This prevents false wake-ups and bus errors in mixed-speed networks where both classic CAN and CAN FD nodes coexist.
What is the role of the LIMP output pin on the UJA1169ATK/X/FZ?
The LIMP pin (Pin 11) is an open-drain, active-low fault indicator on the UJA1169ATK/X/FZ. It asserts during overtemperature events, watchdog failures, or RSTN clamping-providing immediate system-level visibility into critical failures. Its behavior is configurable in non-volatile memory, including activation threshold and latching behavior.
Can the UJA1169ATK/X/FZ operate with a 3.3 V microcontroller supply?
No, the UJA1169ATK/X/FZ variant is configured with a 5 V V1 regulator only. The 3.3 V versions are designated as UJA1169ATK/3 and UJA1169ATK/F/3. Attempting to force 3.3 V operation on UJA1169ATK/X/FZ will result in incorrect regulation and potential functional failure, as the internal feedback network is trimmed for 5 V ±2 % output.
UJA1169ATK/X/FZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 20-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- System Basis Chip
- Interface:
- CAN, SPI
- Voltage - Supply:
- 3V ~ 28V
- Supplier Device Package:
- 20-HVSON (3.5x5.5)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
UJA1169ATK/X/FZ FAQ
1.How can I place an order for UJA1169ATK/X/FZ through Aetrix?
Please submit a Request for Quotation (RFQ) for UJA1169ATK/X/FZ 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 UJA1169ATK/X/FZ reliable?
The price and inventory of UJA1169ATK/X/FZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UJA1169ATK/X/FZ is usually 5 days.
3.What payment methods are accepted for UJA1169ATK/X/FZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UJA1169ATK/X/FZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UJA1169ATK/X/FZ?
UJA1169ATK/X/FZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UJA1169ATK/X/FZ 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 UJA1169ATK/X/FZ?
For technical support, including UJA1169ATK/X/FZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UJA1169ATK/X/FZ requirements.
6.How does Aetrix verify that UJA1169ATK/X/FZ is sourced from the original manufacturer or authorized distributors?
All UJA1169ATK/X/FZ 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 UJA1169ATK/X/FZ meets industry standards.
7.What is the process for return or replacement of UJA1169ATK/X/FZ?
All UJA1169ATK/X/FZ units undergo pre-shipment inspection (PSI). If there is an issue with UJA1169ATK/X/FZ, 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 UJA1169ATK/X/FZ part is unused and in its original packaging.
Return procedure for UJA1169ATK/X/FZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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