Overview
The UJA1076ATW/3V3/WDJ is a high-speed CAN core System Basis Chip (SBC) produced by NXP USA Inc. This chip is designed to replace the basic discrete components commonly found in Electronic Control Units (ECUs) with an integrated solution. It supports networking applications by utilizing a high-speed Controller Area Network (CAN) as the main network interface. The UJA1076ATW/3V3/WDJ is particularly useful in automotive and industrial control systems where reliable and efficient communication is crucial.
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 (SOT549-1) |
| Voltage Regulator | 250 mA voltage regulator for supplying a microcontroller; extendable with external PNP transistor for increased current capability and dissipation distribution. Separate voltage regulator for supplying the on-board CAN transceiver |
| CAN Transceiver | High-speed CAN transceiver, inter-operable and downward compatible with CAN transceiver TJA1042, and compatible with the ISO 11898-2 and ISO 11898-5 standards |
| Watchdog | Advanced independent watchdog with three modes: Window, Timeout, and Off. Default watchdog period is 128 ms |
| Interface | Serial Peripheral Interface (SPI) (full duplex) |
| Wake-up Inputs | 2 local wake-up input ports |
| Limp-home Output | Limp-home output port |
| Operating Voltage | 3.3 V regulator (V1) for UJA1076ATW/3V3 versions |
Key Features
- High-speed CAN transceiver compatible with ISO 11898-2 and ISO 11898-5 standards
- Integrated voltage regulators: 250 mA for microcontroller and separate regulator for CAN transceiver
- Advanced independent watchdog with Window, Timeout, and Off modes
- Serial Peripheral Interface (SPI) for full duplex communication
- Two local wake-up input ports and a limp-home output port
- On-chip oscillator providing timing reference for watchdog and internal timers
Applications
The UJA1076ATW/3V3/WDJ is primarily used in automotive and industrial control systems where high-speed CAN communication is essential. It is suitable for Electronic Control Units (ECUs) in vehicles and other applications requiring reliable network communication and power management.
Q & A
- What is the primary function of the UJA1076ATW/3V3/WDJ? The primary function is to serve as a high-speed CAN core System Basis Chip (SBC) for networking applications in ECUs.
- What package type does the UJA1076ATW/3V3/WDJ come in? It comes in an HTSSOP32 plastic thermal enhanced thin shrink small outline package.
- What are the key integrated components of the UJA1076ATW/3V3/WDJ? The key components include a high-speed CAN transceiver, voltage regulators, an advanced watchdog, SPI interface, and wake-up input ports.
- Is the UJA1076ATW/3V3/WDJ compatible with any specific CAN standards? Yes, it is compatible with ISO 11898-2 and ISO 11898-5 standards.
- What is the purpose of the watchdog in the UJA1076ATW/3V3/WDJ? The watchdog provides three modes (Window, Timeout, and Off) to ensure system reliability and prevent system hangs.
- How many wake-up input ports does the UJA1076ATW/3V3/WDJ have? It has two local wake-up input ports.
- What is the operating voltage for the UJA1076ATW/3V3 versions? The operating voltage is 3.3 V.
- Can the voltage regulator be extended for increased current capability? Yes, it can be extended with an external PNP transistor.
- What interface does the UJA1076ATW/3V3/WDJ use for communication? It uses a Serial Peripheral Interface (SPI) for full duplex communication.
- In which industries is the UJA1076ATW/3V3/WDJ commonly used? It is commonly used in automotive and industrial control systems.
