Mini High-Speed CAN System Basis Chip

UJA1169TK
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Features

General

  • ISO 11898-2:201x (upcoming merged ISO 11898-2/5/6) compliant 1 Mbit/s high-speed CAN transceiver supporting CAN FD active communication up to 2 Mbit/s in the CAN FD data field (all six variants)
  • Autonomous bus biasing according to ISO 11898-6:2013 and ISO 11898-2:201x
  • Scalable 5 V or 3.3 V 250 mA low-drop voltage regulator for 5 V/3.3 V microcontroller supply (V1) based on external PNP transistor concept for thermal scaling
  • CAN-bus connections are truly floating when power to pin BAT is off
  • No ‘false’ wake-ups due to CAN FD traffic (in variants supporting partial networking)

Designed for Automotive Applications

  • ±8 kV ElectroStatic Discharge (ESD) protection, according to the Human Body Model (HBM) on the CAN-bus pins
  • ±6 kV ESD protection according to IEC 61000-4-2 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
  • Very low quiescent current in Standby and Sleep modes with full wake-up capability
  • Leadless HVSON20 package (3.5 mm x 5.5 mm) with improved Automated Optical Inspection (AOI) capability and low thermal resistance
  • Dark green product (halogen free and Restriction of Hazardous Substances (RoHS) compliant)

Low-drop voltage regulator for 5 V/3.3 V microcontroller supply (V1)

  • 5 V/3.3 V nominal output; ±2 % accuracy
  • 250 mA output current capability
  • Thermal management via optional external PNP
  • Current limiting above 250 mA
  • Support for microcontroller RAM retention down to a battery voltage of 2 V (5 V only)
  • Undervoltage reset with selectable detection thresholds of 60 %, 70 %, 80 % or 90% of output voltage, configurable in non-volatile memory (5 V variants only)
  • Excellent transient response with a small ceramic output capacitor
  • Output is short-circuit proof to GND
  • Turned off in Sleep mode

On-board CAN supply (V2; UJA1169TK, UJA1169TK/F, UJA1169TK/3 and UJA1169TK/F/3 only)

  • 5 V nominal output; ±2 % accuracy
  • 100 mA output current capability
  • Current limiting above 100 mA
  • Excellent transient response with a small ceramic output capacitor
  • Output is short-circuit proof to GND
  • User-defined on/off behavior via SPI

Off-board sensor supply (VEXT; UJA1169TK/X and UJA1169TK/X/F only)

  • 5 V nominal output; ±2 % accuracy
  • 100 mA output current capability
  • Current limiting above 100 mA
  • Excellent transient response with a small ceramic output load capacitor
  • Output is short-circuit proof to BAT, GND and negative voltages down to -18 V
  • User-defined on/off behavior via SPI

Power Management

  • Standby mode featuring very low supply current; voltage V1 remains active to maintain the supply to the microcontroller
  • Sleep mode featuring very low supply current with voltage V1 switched off
  • Remote wake-up capability via standard CAN wake-up pattern or ISO 11898-6:2013 and ISO 11898-2:201x compliant selective wake-up frame detection including CAN FD passive support (/F versions only)
  • Local wake-up via the WAKE pin
  • Wake-up source recognition

System control and diagnostic features

  • Mode control via the Serial Peripheral Interface (SPI)
  • Overtemperature warning and shutdown
  • Watchdog with Window, Timeout and Autonomous modes and microcontrollerindependent clock source
  • Optional cyclic wake-up in watchdog Timeout mode
  • Watchdog automatically re-enabled when wake-up event captured
  • Watchdog period selectable between 8 ms and 4 s supporting remote flash programming via the CAN-bus
  • LIMP output pin with configurable activation threshold
  • Watchdog failure, RSTN clamping and overtemperature events trigger the dedicated LIMP output signal
  • 16-, 24- and 32-bit SPI for configuration, control and diagnosis
  • Bidirectional reset pin with variable power-on reset length; configurable in non-volatile memory to support a number of different microcontrollers
  • Customer configuration of selected functions via non-volatile memory
  • Dedicated modes for software development and end-of-line flashing

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