Fault-tolerant CAN/LIN fail-safe system basis chip
Description
UJA1061
Fault-tolerant CAN/LIN fail-safe system basis chip
Rev.
06 — 9 March 2010
Product data sheet
1.
General description
The UJA1061 fail-safe System Basis Chip (SBC) replaces basic discrete components that are common in every Electronic Control Unit (ECU) with a Controller Area Network (CAN) and a Local Interconnect Network (LIN) interface.
The fail-safe SBC supports all networking applications that control various power and sensor peripherals by using fault-tolerant CAN as the main network interface and LIN as a local sub-bus.
The fail-safe SBC contains the following integrated devices:
• ISO11898-3 compliant fault-tolerant CAN transceiver, interoperable with TJA1054,
TJA1054A and TJA1055
• LIN transceiver compliant with LIN 2.
0 and SAE J2602, and compatible with LIN 1.
3 • Advanced independent watchdog • Dedicated voltage regulators for microcontroller and CAN transceiver • Serial peripheral interface (full duplex) • Local wake-up input port • Inhibit/limp-home output port
In addition to the advantages of integrating these common ECU functions in a single package, the fail-safe SBC offers an intelligent combination of system-specific functions such as:
• Advanced low-power concept • Safe and controlled system start-up behavior • Advanced fail-safe system behavior that prevents any conceivable deadlock • Detailed status reporting on system and subsystem levels
The UJA1061 is designed to be used in combination with a microcontroller that incorporates a CAN controller.
The fail-safe SBC ensures that the microcontroller is always started up in a defined manner.
In failure situations, the fail-safe SBC will maintain microcontroller functionality for as long as possible to provide full monitoring and a software-driven fall-back operation.
The UJA1061 is designed for 14 V single power supply architectures and for 14 V and 42 V dual power supply architectures.
NXP Semiconductors
UJA1061
Fault-tolerant CAN/LIN fail-safe system basis chip
2.
Features and benefits
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