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UJA1076ATW/3V3WD,1

Name: UJA1076ATW/3V3WD,1
Brand: NXP
SKU: JT24-UJA1076ATW/3V3WD,1
Price: 0.0001 USD
Availability: InStock
Rating: 5 (1 reviews)

System Basis Chip, CAN Protocol, ISO 11898-2/5 Standard, 4.5V to 28V Supply, HTSSOP-32

Manufacturer :	NXP Semiconductor
Package/Case :	SOT-549-1
Product Categories :	CAN Interface IC
Datasheet:	UJA1076ATW/3V3WD,1 Datasheet (PDF)
RoHs Status:	Rohs
In-stock:	200

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UJA1076ATW/3V3WD,1 Product Details

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.

Feature

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
- Stable output under all conditions

Technical Parameters

Type
High Speed CAN Transceiver
Operating Supply Voltage
4.5 V to 28 V
Supply Current
97 uA
Package / Case
SOT-549-1
Packaging
Reel
Mounting Style
SMD/SMT
Factory Pack Quantity
2000

UJA1076ATW/3V3WD,1 Datasheet

UJA1076ATW NXP Technical Data

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