UJA1078TW/3V3 データシートの表示（PDF） - NXP Semiconductors.

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UJA1078TW/3V3

High-speed CAN/dual LIN core system basis chip

NXP Semiconductors. 

UJA1078

High-speed CAN/dual LIN core system basis chip

Rev. 02 — 27 May 2010

Product data sheet

1. General description

The UJA1078 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) and two Local Interconnect Network (LIN) interfaces.

The UJA1078 supports the networking applications used to control power and sensor

peripherals by using a high-speed CAN as the main network interface and the LIN

interfaces as local sub-busses.

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

• LIN transceivers compliant with LIN 2.1, LIN 2.0 and SAE J2602, and compatible with

LIN 1.3

• Advanced independent watchdog (UJA1078/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 UJA1078 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.

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