Overview
The UJA1168TK/VX/FDJ is a mini high-speed CAN System Basis Chip (SBC) developed by NXP USA Inc. This chip integrates an ISO 11898-2/5/6 compliant HS-CAN transceiver and a 5 V/100 mA supply for a microcontroller. It is designed to support various operating modes, including Normal, Standby, Sleep, and Reset, making it versatile for different application scenarios.
Key Specifications
| Parameter | Description |
|---|---|
| Package | 14-HVSON (3x4.5 mm) |
| Operating Temperature | -40°C to 150°C |
| Supply Voltage | 5 V ± 2% (V1), 5 V ± 2% (VEXT for sensor supply) |
| Current Capability (V1) | 100 mA |
| Current Capability (VEXT) | 30 mA |
| CAN Transceiver Compliance | ISO 11898-2/5/6 |
| Watchdog Modes | Window, Timeout, Autonomous |
| SPI Interface | 16-, 24-, and 32-bit for configuration, control, and diagnosis |
| Wake-Up Capability | Bus and local wake-up, selective wake-up function for CAN partial networking |
Key Features
- Integrated 5 V/100 mA supply for microcontroller and 5 V/30 mA sensor supply (VEXT) in UJA1168TK/VX and UJA1168TK/VX/FDJ versions.
- ISO 11898-2/5/6 compliant HS-CAN transceiver.
- Watchdog with independent clock source, operating in Window, Timeout, and Autonomous modes.
- Optional cyclic wake-up in watchdog Timeout mode.
- Support for remote flash programming via the CAN bus.
- Mode control via Serial Peripheral Interface (SPI).
- Overtemperature warning and shutdown.
- High-voltage output (INH) for controlling an external voltage regulator in UJA1168TK and UJA1168TK/FD versions.
- Excellent transient response and high ESD robustness.
Applications
The UJA1168TK/VX/FDJ is suitable for various automotive and industrial applications that require high-speed CAN communication. These include:
- Automotive systems: engine control units, transmission control units, and other vehicle network systems.
- Industrial automation: control systems, sensors, and actuators requiring reliable CAN communication.
- IoT devices: where low power consumption and reliable communication are crucial.
Q & A
- What is the UJA1168TK/VX/FDJ?
The UJA1168TK/VX/FDJ is a mini high-speed CAN System Basis Chip (SBC) that includes an ISO 11898-2/5/6 compliant HS-CAN transceiver and an integrated 5 V/100 mA supply for a microcontroller.
- What are the key operating modes of the UJA1168TK/VX/FDJ?
The chip supports Normal, Standby, Sleep, Reset, Forced Normal, Overtemp, and Off modes.
- What is the purpose of the watchdog in the UJA1168TK/VX/FDJ?
The watchdog can operate in Window, Timeout, and Autonomous modes and is used to monitor the system and prevent it from entering an undefined state.
- How does the UJA1168TK/VX/FDJ support remote flash programming?
The chip supports remote flash programming via the CAN bus, allowing the microcontroller to be flashed without the risk of a watchdog timer overflow triggering a system reset.
- What is the significance of the high-voltage output (INH) in some versions of the UJA1168TK/VX/FDJ?
The high-voltage output (INH) is used to control an external voltage regulator in the UJA1168TK and UJA1168TK/FD versions.
- What is the sensor supply voltage capability of the UJA1168TK/VX/FDJ?
The chip provides a 5 V nominal output with ±2% accuracy and a current capability of 30 mA for sensor supply in the UJA1168TK/VX and UJA1168TK/VX/FDJ versions.
- How does the UJA1168TK/VX/FDJ handle overtemperature conditions?
The chip features an overtemperature warning and shutdown mechanism to protect the system from overheating.
- What is the ESD robustness of the UJA1168TK/VX/FDJ?
The chip has high ESD robustness of ±6 kV according to IEC 61000-4-2.
- Can the UJA1168TK/VX/FDJ handle negative voltages?
Yes, the chip can handle negative voltages as low as -18 V.
- What is the packaging type of the UJA1168TK/VX/FDJ?
The chip is packaged in a 14-HVSON (3x4.5 mm) package.
