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High-Speed CAN/Dual-LIN Core System Basis Chip
The UJA1078A core System Basis Chip (SBC) replaces the basic discrete components commonly found in Electronic Control Units (ECU) with an integrated High-Speed CAN transceiver and two LIN transceivers, combined with a 250 mA voltage regulator for supplying a microcontroller; extendable with external PNP transistor for active power distribution.
The UJA1078A supports the networking applications used to control power and sensor peripherals by using a High-Speed CAN as the main network interface and the LIN interfaces as local sub-busses.
The UJA1078A 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.
Package HTSSOP32
製品詳細
Features
General
- Designed for automotive applications according to ISO 11898-2/5
- ±8 kV ESD protection Human Body Model (HBM) on the CAN/LIN bus pins and the wake-up pins
- ±6 kV ESD protection IEC 61000-4-2 on the CAN/LIN bus pins and the wake-up pins
- ±58 V short-circuit proof CAN/LIN bus pins
- Battery and CAN/LIN bus pins are protected against transients in accordance with ISO 7637-3
Low-drop voltage regulators (LDOs)
- V1 voltage regulator 5 V or 3.3 V with 250 mA output current capability
- V1 can be combined with an external PNP transistor for better heat distribution over the PCB
- V2 dedicated voltage regulator for CAN transceiver 5 V with 100 mA output current capability.
CAN transceiver
- ISO 11898-2 and ISO 11898-5 compliant high-speed CAN transceiver
- SPLIT output pin for stabilizing the recessive bus level
LIN transceivers
- 2 x LIN 2.1 and SAE J2602 compliant transceivers
- Integrated LIN termination diode at pin DLIN
System control features
- Wake-up via CAN, LIN or two local wake-up pins with wake-up source detection
- Programmable watchdog with independent clock source
- 16-bit Serial Peripheral Interface (SPI) for configuration, control and diagnosis
- Global enable output for controlling safety-critical hardware
- Limp home output (LIMP)
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