UJA1076ATW - NXP

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Часть №

UJA1076ATW
Производитель

NXP
Чип воркер Часть №

CW354273872
RoHS

Lead free / RoHS Compliant
Описание

High-speed CAN core system basis chip
даташит

Datasheet

Способ оплаты и доставка

UJA1076ATW Глобальный поставщик

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UJA1076ATW характеристики

Атрибут	Значение атрибута

Часть №	UJA1076ATW
Производитель	NXP
Чип воркер Часть №	CW354273872
даташит	Datasheet
Корпус/Пакет	HTSSOP-32
	Развернуть все
Жизненный Цикл Продукта	Active
RoHS Комплаенс	RoHS Compliant
Бессвинцовая Статус	Lead Free

UJA1076ATW Описание продукта

Overview
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.
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## Features
**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
**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
**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
**Control and diagnostic features**
* Safe and predictable behavior under all conditions
* Programmable watchdog with independent clock source:
* Window, Timeout (with optional cyclic wake-up) and Off modes supported (with automatic re-enable in the event of an interrupt)
* 16-bit Serial Peripheral Interface (SPI) for configuration, control and diagnosis
* Global enable output for controlling safety-critical hardware
* Limp home output (LIMP) for activating application-specific ‘limp home’ hardware in the event of a serious system malfunction
* Overtemperature shutdown
* Interrupt output pin; interrupts can be individually configured to signal V1/V2 undervoltage, CAN/local wake-up and cyclic and power-on interrupt events
* Bidirectional reset pin with variable power-on reset length to support a variety of microcontrollers
* Software-initiated system reset
**Voltage regulators**
* Main voltage regulator V1:
* Scalable voltage regulator for the microcontroller, its peripherals and additional external transceivers
* ±2 % accuracy
* 3.3 V and 5 V versions available
* Delivers up to 250 mA and can be combined with an external PNP transistor for better heat distribution over the PCB
* Selectable current threshold at which the external PNP transistor starts to deliver current
* Undervoltage warning at 90 % of nominal output voltage and undervoltage reset at 90 % or 70 % of nominal output voltage
* Can operate at VBAT voltages down to 4.5 V (e.g. during cranking), in accordance with ISO 7637 pulse 4/4b and ISO 16750-2
* Stable output under all conditions
* Voltage regulator V2 for CAN transceiver:
* Dedicated voltage regulator for on-chip high-speed CAN transceiver
* Undervoltage warning at 90 % of nominal output voltage
* Can be switched off; CAN transceiver can be supplied by V1 or by an external voltage regulator
* Can operate at VBAT voltages down to 5.5 V (e.g. during cranking) in accordance with ISO 7637, pulse 4
## Features

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