High-Speed CAN/Dual-LIN Core System Basis Chip
UJA1078ATW Receive alerts
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
Product Details
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)