UJA1167TK Mini high-speed CAN system basis chip with Standby/Sleep modes & watchdog

The UJA1167 is a mini high-speed CAN System Basis Chip (SBC) containing an ISO 11898-2/5 compliant HS-CAN transceiver and an integrated 5 V/100 mA supply for a microcontroller. It also features a watchdog and a Serial Peripheral Interface (SPI). The UJA1167 can be operated in very low-current Standby and Sleep modes with bus and local wake-up capability and supports ISO 11898-6 compliant autonomous CAN biasing. The microcontroller supply is switched off in Sleep mode. The UJA1167TK version contains a battery-related high-voltage output (INH) for controlling an external voltage regulator, while the UJA1167TK/VX is equipped with a 5 V sensor supply (VEXT).

A number of configuration settings are stored in non-volatile memory, allowing the SBC to be adapted for use in a specific application. This makes it possible to configure the power-on behavior of the UJA1167 to meet the requirements of different applications

产品特点 Features

General

ISO 11898-2 and ISO 11898-5 compliant high-speed CAN transceiver
Autonomous bus biasing according to ISO 11898-6
Fully integrated 5 V/100 mA low-drop voltage regulator for 5 V microcontroller supply (V1)
Bus connections are truly floating when power to pin BAT is off

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 the CAN bus pins, the sensor supply output VEXT and on pins BAT and WAKE
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 HVSON14 package (3.0 mm x 4.5 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 microcontroller supply (V1)

5 V nominal output; ±2 % accuracy
100 mA output current capability
Current limiting above 150 mA
On-resistance of 5 Ω (max)
Support for microcontroller RAM retention down to a battery voltage of 2 V
Undervoltage reset with selectable detection thresholds: 60 %, 70 %, 80 % or 90 % of output voltage
Excellent transient response with a 4.7 μF ceramic output capacitor
Short-circuit to GND/overload protection on pin V1
Turned off in Sleep mode

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
Local wake-up via the WAKE pin
Wake-up source recognition
Local and/or remote wake-up can be disabled to reduce current consumption
High-voltage output (INH) for controlling an external voltage (UJA1167TK)

System control and diagnostic features

Mode control via the Serial Peripheral Interface (SPI)
Overtemperature warning and shutdown
Watchdog with independent clock source
Watchdog can be operated in Window, Timeout and Autonomous modes
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
Supports remote flash programming via the CAN bus
16-, 24- and 32-bit SPI for configuration, control and diagnosis
Bidirectional reset pin with variable power-on reset length to support a variety of microcontrollers
Configuration of selected functions via non-volatile memory

Sensor supply voltage (pin VEXT of UJA1167TK/VX)

5 V nominal output; ±2 % accuracy
30 mA output current capability
Current limiting above 30 mA
Excellent transient response with a 4.7 μF ceramic output load capacitor
Protected against short-circuits to GND and to the battery
High ESD robustness of ±6 kV according to IEC 61000-4-2
Can handle negative voltages as low as -18 V

UJA1167TK 技术支持

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