High-speed CAN core system basis chip
Description
UJA1076A
High-speed CAN core system basis chip
Rev.
2 — 31 January 2011
Product data sheet
1.
General description
The UJA1076A core System Basis Chip (SBC) replaces the basic discrete components commonly found in Electronic Control Units (ECU) with a high-speed Controller Area Network (CAN).
The UJA1076A supports the networking applications used to control power and sensor peripherals by using a high-speed CAN as the main network interface.
The core SBC contains the following integrated devices:
• 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
• Advanced independent watchdog (UJA1076A/xx/WD versions) • 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 • Serial Peripheral Interface (SPI) (full duplex) • 2 local wake-up input ports • Limp-home output port
In addition to the advantages gained from integrating these common ECU functions in a single package, the core SBC offers an intelligent combination of system-specific functions such as:
• Advanced low-power concept • Safe and controlled system start-up behavior • Detailed status reporting on system and sub-system levels
The UJA1076A is designed to be used in combination with a microcontroller that incorporates a CAN controller.
The SBC ensures that the microcontroller always starts up in a controlled manner.
NXP Semiconductors
UJA1076A
High-speed CAN core system basis chip
2.
Features and benefits
2.
1 General
Contains a full set of CAN ECU functions: CAN transceiver Scalable 3.
3 V or 5 V voltage regulator delivering up to 250 mA for a microcontroller and peripheral circuitry; an external PNP transistor can be connected for better heat distribution over the PCB Separate voltage regulator for the CAN transceiver (5 V...
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