Overview
The UJA1065TW/5V0/C/T is a high-speed CAN/LIN fail-safe System Basis Chip (SBC) produced by NXP USA Inc. This chip is designed to integrate various peripheral functions commonly found in Electronic Control Units (ECUs) into a single package. It supports networking applications using high-speed CAN as the main network interface and LIN as a local sub-bus. The UJA1065TW is particularly useful in automotive networking applications, ensuring reliable and fail-safe operation of the system.
Key Specifications
| Parameter | Description |
|---|---|
| Package | HTSSOP32 plastic thermal enhanced thin shrink small outline package; 32 leads; body width 6.1 mm; lead pitch 0.65 mm; exposed die pad |
| Voltage Supply | Compatible with 14 V single power supply and 14 V and 42 V dual power supply architectures |
| CAN Transceiver | High-speed CAN transceiver, interoperable and downward compatible with CAN transceivers TJA1041 and TJA1041A, ISO 11898-2 and ISO 11898-5 compliant |
| LIN Transceiver | LIN 2.0 compliant, downward compatible with LIN 1.3 and the TJA1020 |
| Watchdog | Advanced independent watchdog with Window mode and Time-out mode |
| Voltage Regulators | Dedicated voltage regulators for microcontroller and CAN transceiver |
| Interface | Serial peripheral interface (SPI), local wake-up input port, inhibit/limp-home output port |
Key Features
- Integrates high-speed CAN and LIN transceivers, advanced independent watchdog, and dedicated voltage regulators for microcontroller and CAN transceiver
- Supports 14 V and 42 V power supply systems, making it suitable for various automotive applications
- Fail-safe system controller with fail-safe behavior, ensuring microcontroller functionality in failure situations
- Smart operating modes and power management modes, including cyclic wake-up capability in Standby and Sleep mode
- Local wake-up input with cyclic supply feature and limp-home output signal for activating application hardware in fail-safe mode
- Software-initiated system reset and unique SPI readable device type identification
Applications
The UJA1065TW/5V0/C/T is primarily designed for use in automotive Electronic Control Units (ECUs) that require reliable and fail-safe networking capabilities. It is suitable for applications involving high-speed CAN and LIN interfaces, such as engine control units, transmission control units, and other automotive networking systems
Q & A
- What is the primary function of the UJA1065TW/5V0/C/T? The primary function is to integrate various peripheral functions of an Electronic Control Unit (ECU) into a single chip, supporting high-speed CAN and LIN networking applications.
- What types of power supply architectures does the UJA1065TW support? It supports 14 V single power supply and 14 V and 42 V dual power supply architectures.
- Is the UJA1065TW compatible with different CAN transceivers? Yes, it is interoperable and downward compatible with CAN transceivers TJA1041 and TJA1041A.
- What are the key features of the LIN transceiver in the UJA1065TW? The LIN transceiver is LIN 2.0 compliant and downward compatible with LIN 1.3 and the TJA1020.
- Does the UJA1065TW have built-in watchdog functionality? Yes, it includes an advanced independent watchdog with Window mode and Time-out mode.
- How does the UJA1065TW manage power supply for the microcontroller and CAN transceiver? It includes dedicated voltage regulators for both the microcontroller and the CAN transceiver.
- What is the purpose of the local wake-up input port and inhibit/limp-home output port? The local wake-up input port allows for cyclic supply, and the inhibit/limp-home output port activates application hardware in fail-safe mode.
- Can the UJA1065TW be used in both 14 V and 42 V systems? Yes, it is designed to be compatible with both 14 V and 42 V power supply systems.
- How does the fail-safe system controller in the UJA1065TW operate? The fail-safe system controller ensures microcontroller functionality in failure situations and manages the register configuration and internal functions of the SBC.
- What is the significance of the SPI interface in the UJA1065TW? The SPI interface allows for serial communication and includes features like software-initiated system reset and unique device type identification.
