Mini High-Speed CAN System Basis Chip for Partial Networking

UJA1168ATK

The UJA1168ATK is a mini high-speed CAN system basis chip (SBC) containing an ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 compliant HS-CAN transceiver supporting CAN FD up to 5 Mbit/s together with a 5 V/100 mA supply for a microcontroller. It also features a watchdog and a serial peripheral interface (SPI).

The UJA1168ATK can be operated in very-low-current standby and sleep modes and supports CAN partial networking by means of a selective wake-up function. A dedicated implementation of the partial networking protocol called “FD-passive” has been embedded as well.

A number of configuration settings are stored in non-volatile memory, allowing the SBC to be adapted for use in a specific application.

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Product Details

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Block Diagram

UJA1168ATK Block Diagram

UJA1168ATK Block Diagram
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Features

General

  • Designed for automotive applications ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 compliant high-speed CAN transceiver
  • Hardware and software compatible with the UJA116x product family and with improved EMC performance
  • ±8 kV ESD protection, according to the Human Body Model (HBM) on the CAN bus pins
  • ±6 kV ESD protection, according to IEC TS 62228 on the CAN bus pins, VEXT and on pins BAT and WAKE
  • CAN bus pins short-circuit proof to ±58 V
  • Battery and CAN bus pins are protected against automotive transients according to with ISO 7637-3

CAN Transceiver

  • High-speed CAN transceiver supporting CAN FD active communication up to 5 Mbit/s in the CAN FD data field
  • Autonomous bus biasing according to ISO 11898-6
  • Remote wake-up capability via standard CAN wake-up pattern or via ISO 11898-6 compliant selective wake-up frame detection, including CAN FD-passive support

Integrated Voltage Regulator (V1)

  • Integrated 5 V / 100 mA voltage regulator for microcontroller supply
  • Support for microcontroller RAM retention down to a battery voltage of 2 V

Sensor Supply Regulator (VEXT)

  • Integrated 5 V / 30 mA voltage regulator for sensor supply
  • Protected against short-circuits to GND and to the battery (can handle negative voltages as low as -18 V)

System Control Features

  • Standby and Sleep mode featuring very low supply current
  • Transmit data (TXD) dominant time-out function
  • Mode control via the serial peripheral interface (SPI)
  • Watchdog with independent clock source
  • Local wake-up via the WAKE pin
  • High-voltage output (INH) for controlling an external voltage
  • Configuration of selected functions via non-volatile memory

Comparison Table

Features
Orderable Type Standby Mode Sleep Mode VIO LDO (5 V) SPI Watchdog INH External 5 V Supply Partial Networking CAN FD Active CAN FD Passive
UJA1161ATK/0 X Internally used as self-supplied CAN 5 Mbps
UJA1162ATK/0 X X X Internally used as self-supplied CAN INH 5 Mbps
UJA1163ATK/0 X 100 mA 5 Mbps
UJA1164ATK/0 X 100 mA X X 5 Mbps
UJA1166ATK/0 X X X 100 mA INH 5 Mbps
UJA1167ATK/0 X X 100 mA X X INH 5 Mbps
UJA1167ATK/X/0 X X 70 mA X X 5 V/ 30 mA 5 Mbps
UJA1168ATK/0 X X 100 mA X X INH X 5 Mbps
UJA1168ATK/X/0 X X 70 mA X X 5 V/ 30 mA X 5 Mbps
UJA1168ATK/F/0 X X 100 mA X X INH X 5 Mbps X
UJA1168ATK/XF/0 X X 70 mA X X 5 V/ 30 mA X 5 Mbps X

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