Overview
The UJA1061TW/5V0/C/T518, produced by NXP USA Inc., is a fail-safe System Basis Chip (SBC) designed to integrate various peripheral functions commonly found in Electronic Control Units (ECUs) within automotive and other networking applications. This chip combines a Controller Area Network (CAN) interface, a Local Interconnect Network (LIN) interface, and several other essential components into a single package, enhancing reliability and reducing the complexity of ECU designs.
Key Specifications
| Specification | Description |
|---|---|
| Package Type | HTSSOP32 (plastic thermal enhanced thin shrink small outline package; 32 leads; body width 6.1 mm; lead pitch 0.65 mm) |
| Operating Voltage | 5 V (UJA1061TW/5V0), 3.3 V (UJA1061TW/3V3) |
| CAN Transceiver | ISO11898-3 compliant, interoperable with TJA1054, TJA1054A, and TJA1055 |
| LIN Transceiver | LIN 2.0 and SAE J2602 compliant, compatible with LIN 1.3 |
| 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), full duplex |
| Wake-up Input | Local wake-up input port |
| Inhibit/Limp-home Output | Inhibit or limp-home output port |
| Compatibility | Compatible with 42 V power supply systems |
Key Features
- Integration of CAN and LIN transceivers, reducing the need for discrete components
- Advanced independent watchdog with Window mode and Time-out mode
- Dedicated voltage regulators for the microcontroller and CAN transceiver
- Serial Peripheral Interface (SPI) for full duplex communication
- Local wake-up input port and inhibit/limp-home output port
- Fail-safe behavior with limp-home output signal for activating application hardware in fail-safe mode
- Access-protected RAM for logging cyclic problems and reporting in a single SPI message
- Software-initiated system reset and unique SPI readable device type identification
Applications
The UJA1061TW/5V0/C/T518 is primarily used in automotive Electronic Control Units (ECUs) and other networking applications that require fault-tolerant CAN and LIN interfaces. It is suitable for various power and sensor peripherals, including those in 12 V and 42 V systems. This chip is particularly useful in applications where reliability, fail-safe operation, and reduced component count are critical.
Q & A
- What is the primary function of the UJA1061TW/5V0/C/T518? The primary function is to integrate various peripheral functions of an Electronic Control Unit (ECU) into a single chip, including CAN and LIN transceivers, voltage regulators, and a watchdog timer.
- What are the operating voltages for the UJA1061TW/5V0/C/T518? The chip is available in 5 V (UJA1061TW/5V0) and 3.3 V (UJA1061TW/3V3) versions.
- Is the CAN transceiver compliant with any standards? Yes, it is ISO11898-3 compliant and interoperable with TJA1054, TJA1054A, and TJA1055.
- What is the role of the watchdog timer in the UJA1061TW/5V0/C/T518? The watchdog timer operates in Window mode and Time-out mode to ensure the system's reliability and fail-safe operation.
- Does the UJA1061TW/5V0/C/T518 support SPI communication? Yes, it supports full duplex Serial Peripheral Interface (SPI) communication.
- What is the purpose of the local wake-up input port? The local wake-up input port allows the system to wake up from a low-power state.
- How does the limp-home output signal function? The limp-home output signal activates application hardware in case the system enters fail-safe mode, such as switching on warning lights.
- Is the UJA1061TW/5V0/C/T518 compatible with 42 V power supply systems? Yes, it is compatible with 42 V power supply systems.
- What is the benefit of the access-protected RAM in the UJA1061TW/5V0/C/T518? The access-protected RAM allows for logging cyclic problems and reporting in a single SPI message.
- Can the system reset be initiated by software? Yes, the system reset can be initiated by software.
