Mini High-Speed CAN System Basis Chip

UJA1169ATK

The UJA1169ATK is a mini high-speed CAN system basis chip (SBC) family containing an ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 compliant HS-CAN transceiver including CAN FD up to 5 Mbit/s and an integrated 5 V or 3.3 V, 250 mA supply. It also features a watchdog, a serial peripheral interface (SPI) and LIMP output.

The UJA1169ATK comes in six variants:

  • The UJA1169ATK, UJA1169ATK/F, UJA1169ATK/X and UJA1169ATK/X/F contain a 5 V regulator (V1). V1 is a 3.3 V regulator in the UJA1169ATK/3 and the UJA1169ATK/F/3.
  • The UJA1169ATK/X and UJA1169ATK/X/F are equipped with a 5 V supply (VEXT) for off-board loads.
  • The UJA1169Axx/F variants support ISO 11898-2:2016 compliant CAN partial networking with a selective wake-up function incorporating CAN FD-passive.

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Product Details

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Block Diagram

UJA1169ATK Block Diagram

UJA1169ATK Block Diagram
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Features

General

  • Designed for automotive applications according to ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5
  • Hardware and software compatible with the UJA1169 product family
  • ±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 pins BAT, WAKE, VEXT and the CAN-bus pins
  • CAN-bus pins short-circuit proof to ±58 V
  • Battery and CAN-bus pins protected against automotive transients according to ISO 7637-3

Low-Drop Voltage Regulators (LDOs)

  • V1 voltage regulator 5 V or 3.3 V with 250 mA output current capability
  • Active power distribution via optional external PNP transistor
  • V2 auxiliary voltage regulator 5 V with 100 mA output current capability
  • V2 is protected against shorts to GND, battery and negative voltages down to -18 V for off-board loads (UJA1169ATK/X and UJA1169ATK/X/F only)

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 ISO 11898-2:2016 compliant CAN partial networking by means of selective wake-up frame detection including CAN FD passive support (/F versions only)

System Control Features

  • Wake-up via CAN or local wake-up pin with wake-up source detection
  • Watchdog with window, timeout and autonomous modes and microcontroller-independent clock source
  • LIMP output pin with configurable activation threshold
  • 16-, 24- and 32-bit SPI for configuration, control and diagnosis

Comparison Table

Orderable Type Standby mode Sleep mode LDO (5V0) (mA) LDO (3V3) (mA) SPI Watchdog External 5 (V) Supply (mA) Partial Networking CAN FD Active (Mbps) CAN FD Passive LIMP
UJA1169ATK X X 250 X X 5 X
UJA1169ATK/X X X 250 X X 100 5 X
UJA1169ATK/F X X 250 X X X 5 X X
UJA1169ATK/X/F X X 250 X X 100 X 5 X X
UJA1169ATK/3 X X 250 X X 5 X
UJA1169ATK/F/3 X X 250 X X X 5 X X

Documentation

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Hardware

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Software

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Note: For better experience, software downloads are recommended on desktop.

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