深圳市中立信电子科技有限公司

UJA1078ATW/5V0/WDJ

CAN 接口集成电路 High-speed CAN/dual LIN core system basis chip

High-speed CAN/dual LIN core system basis chip

General description

The UJA1078ATW 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.

General UJA1078ATW/5V0/WDJ

„ Contains a full set of CAN and LIN ECU functions:

‹ CAN transceiver and two LIN transceivers

‹ 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

CAN transceiver

„ ISO 11898-2 and ISO 11898-5 compliant high-speed CAN transceiver

„ Dedicated low dropout voltage regulator for the CAN bus:

‹ Independent of the microcontroller supply

‹ Significantly improves EMC performance

„ Bus connections are truly floating when power is off

„ SPLIT output pin for stabilizing the recessive bus level

LIN transceivers UJA1078ATW

„ 2 × LIN 2.1 compliant LIN transceivers

„ Compliant with SAE J2602

„ Downward compatible with LIN 2.0 and LIN 1.3

„ Low slope mode for optimized EMC performance

„ Integrated LIN termination diode at pin DLIN