General description
The UJA1076 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 UJA1076 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 (UJA1076/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

Features and benefits
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)
    ◆ Watchdog with Window and Timeout modes and on-chip oscillator
    ◆ Serial Peripheral Interface (SPI) for communicating with the microcontroller
    ◆ ECU power management system
■ Designed for automotive applications:
    ◆ Excellent ElectroMagnetic Compatibility (EMC) performance
    ◆ ±8 kV ElectroStatic Discharge (ESD) protection Human Body Model (HBM) on the CAN bus pins and the wake pins
    ◆ ±6 kV ElectroStatic Discharge (ESD) protection IEC 61000-4-2 on the CAN bus pins and the wake pins
    ◆ ±58 V short-circuit proof CAN bus pins
    ◆ Battery and CAN bus pins are protected against transients in accordance with ISO 7637-3
■ Supports remote flash programming via the CAN bus
■ Small 6.1 mm × 11 mm HTSSOP32 package with low thermal resistance
■ Pb-free; RoHS and dark green compliant
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