UJA1076 datasheet(2/47 Pages) NXP

2 / 47 page

UJA1076_2

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Product data sheet

Rev. 02 — 27 May 2010

2 of 47

NXP Semiconductors

UJA1076

High-speed CAN core system basis chip

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)

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

2.2 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

2.3 Power management

Wake-up via CAN or local wake pins with wake-up source detection

2 wake pins:

WAKE1 and WAKE2 inputs can be switched off to reduce current flow

Output signal (WBIAS) to bias the wake pins, selectable sampling time of 16 ms or

64 ms

Standby mode with very low standby current and full wake-up capability; V1 active to

maintain supply to the microcontroller

Sleep mode with very low sleep current and full wake-up capability

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