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UJA1069 반도체 회로 부품 판매점

LIN fail-safe system basis chip



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NXP Semiconductors
UJA1069 데이터시트, 핀배열, 회로
UJA1069
LIN fail-safe system basis chip
Rev. 04 — 28 October 2009
Product data sheet
1. General description
The UJA1069 fail-safe System Basis Chip (SBC) replaces basic discrete components
which are common in every Electronic Control Unit (ECU) with a Local Interconnect
Network (LIN) interface. The fail-safe SBC supports all networking applications which
control various power and sensor peripherals by using LIN as a local sub-bus. The
fail-safe SBC contains the following integrated devices:
LIN transceiver compliant with LIN 2.0 and SAE J2602, and compatible with LIN 1.3
Advanced independent watchdog
Dedicated voltage regulator for microcontroller
Serial peripheral interface (full duplex)
Local wake-up input port
Inhibit/limp-home output port
In addition to the advantages of integrating these common ECU functions in a single
package, the fail-safe SBC offers an intelligent combination of system-specific functions
such as:
Advanced low-power concept
Safe and controlled system start-up behavior
Advanced fail-safe system behavior that prevents any conceivable deadlock
Detailed status reporting on system and sub-system levels
The UJA1069 is designed to be used in combination with a microcontroller and a LIN
controller. The fail-safe SBC ensures that the microcontroller is always started up in a
defined manner. In failure situations the fail-safe SBC will maintain the microcontroller
function for as long as possible, to provide full monitoring and software driven fall-back
operation.
The UJA1069 is designed for 14 V single power supply architectures and for 14 V and
42 V dual power supply architectures.


UJA1069 데이터시트, 핀배열, 회로
NXP Semiconductors
UJA1069
LIN fail-safe system basis chip
2. Features
2.1 General
I Contains a full set of LIN ECU functions:
N LIN transceiver
N Voltage regulator for the microcontroller (5.0 V)
N Enhanced window watchdog with on-chip oscillator
N Serial Peripheral Interface (SPI) for the microcontroller
N ECU power management system
N Fully integrated autonomous fail-safe system
I Designed for automotive applications:
N Supports 14 V and 42 V architectures
N Excellent ElectroMagnetic Compatibility (EMC) performance
N ±8 kV ElectroStatic Discharge (ESD) protection Human Body Model (HBM) for
off-board pins
N ±4 kV ElectroStatic Discharge (ESD) protection IEC 61000-4-2 for off-board pins
N ±60 V short-circuit proof LIN-bus pin
N Battery and LIN-bus pins are protected against transients in accordance with
ISO 7637-3
N Very low sleep current
I Supports remote flash programming via the LIN-bus
I Available in:
N Small 6.4 mm × 7.8 mm HTSSOP24 package with low thermal resistance
N Small 8 mm × 11 mm HTSSOP32 package with low thermal resistance
2.2 LIN transceiver
I LIN 2.0 and SAE J2602 compliant LIN transceiver
I Enhanced error signalling and reporting
I Downward compatible with LIN 1.3 and the TJA1020
2.3 Power management
I Smart operating modes and power management modes
I Cyclic wake-up capability in Standby and Sleep mode
I Local wake-up input with cyclic supply feature
I Remote wake-up capability via the LIN-bus
I External voltage regulators can easily be incorporated in the power supply system
(flexible and fail-safe)
I 42 V battery related high-side switch for driving external loads such as relays and
wake-up switches
I Intelligent maskable interrupt output
UJA1069_4
Product data sheet
Rev. 04 — 28 October 2009
© NXP B.V. 2009. All rights reserved.
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