UJA1079ATW: LIN core system basis chip

Overview

The UJA1079A core System Basis Chip (SBC) replaces the basic discrete components commonly found in Electronic Control Units (ECU) with a LIN transceiver, combined with a 250 mA voltage regulator for supplying a microcontroller; extendable with external PNP transistor for active power distribution.

The UJA1079A supports the networking applications used to control power and sensor peripherals by using the LIN interface as a local sub-bus.

The UJA1079A is designed to be used in combination with a microcontroller. The SBC ensures that the microcontroller always starts up in a controlled manner.

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Features

General

Designed for automotive applications according to ISO 11898-2/5
±8 kV ESD protection Human Body Model (HBM) on the CAN/LIN bus pins and the wake-up pins
±6 kV ESD protection IEC 61000-4-2 on the CAN/LIN bus pins and the wake-up pins
±58 V short-circuit proof CAN/LIN bus pins
Battery and CAN/LIN bus pins are protected against transients in accordance with ISO 7637-3

Low-drop voltage regulators (LDOs)

V1 voltage regulator 5 V or 3.3 V with 250 mA output current capability
V1 can be combined with an external PNP transistor for better heat distribution over the PCB

LIN transceiver

LIN 2.1 and SAE J2602 compliant transceiver
Integrated LIN termination diode at pin DLIN

System control features

Wake-up via CAN, LIN or two local wake-up pins with wake-up source detection
Programmable watchdog with independent clock source
16-bit Serial Peripheral Interface (SPI) for configuration, control and diagnosis
Global enable output for controlling safety-critical hardware
Limp home output (LIMP)

MoreLess

Features

General

Designed for automotive applications according to ISO 11898-2/5
±8 kV ESD protection Human Body Model (HBM) on the CAN/LIN bus pins and the wake-up pins
±6 kV ESD protection IEC 61000-4-2 on the CAN/LIN bus pins and the wake-up pins
±58 V short-circuit proof CAN/LIN bus pins
Battery and CAN/LIN bus pins are protected against transients in accordance with ISO 7637-3

Low-drop voltage regulators (LDOs)

V1 voltage regulator 5 V or 3.3 V with 250 mA output current capability
V1 can be combined with an external PNP transistor for better heat distribution over the PCB

LIN transceiver

LIN 2.1 and SAE J2602 compliant transceiver
Integrated LIN termination diode at pin DLIN

System control features

Wake-up via CAN, LIN or two local wake-up pins with wake-up source detection
Programmable watchdog with independent clock source
16-bit Serial Peripheral Interface (SPI) for configuration, control and diagnosis
Global enable output for controlling safety-critical hardware
Limp home output (LIMP)

Data Sheets

Buy

UJA1079ATW Block Diagram

Package HTSSOP32

UJA1079ATW Block Diagram
Package HTSSOP32

UJA1079ATW Block Diagram

Package HTSSOP32

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Target Applications

Automotive

Body Control modules
Center stack modules
Climate control modules
Gear shift control
Seat control modules
Small frontlight & Headlight control modules
Sun roof modules