UJA1076ATW/3V3WD,1 NXP

UJA1076A High-speed CAN core system basis chip Rev. 2 31 January 2011 Product data sheet 1. General description The UJA1076A 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 UJA1076A 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 (UJA1076A/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 UJA1076A 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.UJA1076A NXP Semiconductors High-speed CAN core system basis chip 2. 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: Enhanced ElectroMagnetic Compatibility (EMC) performance 8 kV ElectroStatic Discharge (ESD) protection Human Body Model (HBM) on the CAN bus pins and the wake-up pins 6 kV ElectroStatic Discharge (ESD) protection IEC 61000-4-2 on the CAN bus pins and the wake-up 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 Restriction of Hazardous Substances Directive (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-up pins with wake-up source detection 2 wake-up pins: WAKE1 and WAKE2 inputs can be switched off to reduce current flow Output signal (WBIAS) to bias the wake-up 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 UJA1076A All information provided in this document is subject to legal disclaimers. NXP B.V. 2011. All rights reserved. Product data sheet Rev. 2 31 January 2011 2 of 47