Overview
The UJA1168TK/VX,118 is a mini high-speed CAN System Basis Chip (SBC) developed by NXP USA Inc. This chip is designed for use in small electronic control units, particularly in body and comfort applications within the automotive sector. It integrates an ISO 11898-2/5/6 compliant high-speed CAN transceiver and a fully integrated 5 V/100 mA low-drop voltage regulator for supplying a microcontroller. The UJA1168TK/VX,118 also features a watchdog and a Serial Peripheral Interface (SPI) for configuration, control, and diagnosis.
Key Specifications
| Parameter | Description |
|---|---|
| Package/Case | 14-HVSON (3x4.5) |
| Mounting Type | Surface Mount |
| Protocol | CAN |
| Receiver Hysteresis | 200 mV |
| Data Rate | Up to 2 Mbit/s in CAN FD fast phase |
| Voltage Regulator | 5 V/100 mA for microcontroller supply |
| Operating Modes | Normal, Standby, Sleep, Reset, Forced Normal, Overtemp, Off |
| Wake-Up Capability | Bus and local wake-up with selective wake-up function |
| Watchdog | Window, Timeout, and Autonomous modes with optional cyclic wake-up |
| SPI Interface | 16-, 24-, and 32-bit for configuration, control, and diagnosis |
| High-Voltage Output | INH for controlling external voltage regulator (UJA1168TK and UJA1168TK/FD) |
| Sensor Supply | 5 V sensor supply (VEXT) for UJA1168TK/VX and UJA1168TK/VX/FD |
Key Features
- ISO 11898-2, ISO 11898-5, and ISO 11898-6 Compliance: Ensures compatibility with high-speed CAN standards.
- Loop Delay Symmetry Timing: Enables reliable communication at data rates up to 2 Mbit/s in the CAN FD fast phase.
- Autonomous Bus Biasing: According to ISO 11898-6 for stable bus operation.
- Integrated 5 V/100 mA Voltage Regulator: For supplying the microcontroller.
- Low-Current Standby and Sleep Modes: With bus and local wake-up capability.
- Watchdog with Independent Clock Source: Supports Window, Timeout, and Autonomous modes with optional cyclic wake-up.
- SPI Interface: 16-, 24-, and 32-bit for configuration, control, and diagnosis.
- High-Voltage Output (INH): For controlling external voltage regulators in UJA1168TK and UJA1168TK/FD versions.
- Sensor Supply (VEXT): 5 V sensor supply in UJA1168TK/VX and UJA1168TK/VX/FD versions.
- Partial Networking Support: With selective wake-up function and 'FD-passive' mode for ignoring CAN FD frames in Sleep/Standby mode.
Applications
- Automotive Communication Systems: Ideal for body and comfort applications in vehicles.
- Industrial Automation Systems: Suitable for harsh environments requiring reliable communication.
- Battery-Powered Devices: Efficient power management with low-current Standby and Sleep modes.
- Sensor-Based Applications: Provides stable power supply to sensors with the VEXT output.
Q & A
- What is the UJA1168TK/VX,118 used for?
The UJA1168TK/VX,118 is used as a mini high-speed CAN System Basis Chip (SBC) in small electronic control units, particularly in automotive body and comfort applications.
- What are the key standards it complies with?
The UJA1168TK/VX,118 complies with ISO 11898-2, ISO 11898-5, and ISO 11898-6 standards for high-speed CAN communication.
- What is the maximum data rate supported by the UJA1168TK/VX,118?
The UJA1168TK/VX,118 supports data rates up to 2 Mbit/s in the CAN FD fast phase.
- What is the purpose of the integrated voltage regulator?
The integrated 5 V/100 mA voltage regulator supplies power to the microcontroller.
- Does the UJA1168TK/VX,118 support partial networking?
Yes, it supports ISO 11898-6 compliant CAN partial networking with a selective wake-up function and 'FD-passive' mode.
- What are the different operating modes of the UJA1168TK/VX,118?
The operating modes include Normal, Standby, Sleep, Reset, Forced Normal, Overtemp, and Off.
- How does the watchdog function in the UJA1168TK/VX,118?
The watchdog supports Window, Timeout, and Autonomous modes with optional cyclic wake-up and is powered by an independent clock source.
- What is the purpose of the INH and VEXT outputs?
The INH output controls external voltage regulators, while the VEXT output provides a 5 V sensor supply in certain versions.
- Can the UJA1168TK/VX,118 be used in industrial automation systems?
Yes, it is suitable for industrial automation systems due to its reliable communication capabilities in harsh environments.
- How does the UJA1168TK/VX,118 manage power in low-current modes?
In Standby and Sleep modes, the UJA1168TK/VX,118 operates at very low current, with the microcontroller supply switched off in Sleep mode.
- Is the UJA1168TK/VX,118 recommended for new designs?
No, for new designs, NXP recommends using the UJA1168ATK instead.
