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Join our teamUJA1168ATK: Mini high-speed CAN system basis chip for partial networking
Overview
Features
Features
General
- 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
- Loop delay symmetry timing enables reliable communication at data rates up to 5 Mbit/s in the CAN FD fast phase
- 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 pin BAT is off
- No ‘false’ wake-ups due to CAN FD frame detection in UJA1168ATK/F and UJA1168ATK/XF
Designed for Automotive Applications
- ±8 kV Electro Static Discharge (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, 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 are protected against automotive transients according to with ISO 7637-3
- Very low quiescent current in Standby and Sleep modes with full wake-up capability
- Leadless HVSON14 package (3 mm x 4.5 mm) with improved Automated Optical Inspection (AOI) capability
- Dark green product (halogen free and Restriction of hazardous Substances (RoHS) compliant)
Integrated Supply Voltage for the CAN Transceiver (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 response with a 4.7 µF ceramic output load 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 microcontrollerM
- Sleep mode featuring very low supply current with voltage V1 switched offM
- 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 in /F and /XF variantsM
- Bit rates of 50 kbit/s, 100 kbit/s, 125 kbit/s, 250 kbit/s, 500 kbit/s, and 1 Mbit/s supported during selective wake-upM
- Local wake-up via the WAKE pinM
- Wake-up source recognitionM
- Local and/or remote wake-up can be disabled to reduce current consumptionM
- High-voltage output (INH) for controlling an external voltageM
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 UJA1168ATK/X and UJA1168ATK/XF)
- 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 TS 62228
- Can handle negative voltages as low as -18 V
.
Target Applications
Automotive
- Body Control
- Door Control
- Electric Power Steering (EPS)
- Gear Shifters
- Heating Ventilation, and Air Conditioning (HVAC)
- HVAC Climate Control
- Seat Pretensioner
- Sunroof Control
- Tire Pressure Monitoring System (TPMS)
- Window Control
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 | ||