Eindhoven, Netherlands: NXP has unveiled the industry’s first NWP ISO 11898-6 and AUTOSAR R3.2.1 compliant solution supporting Controller Area Network (CAN) partial networking. Its release follows calls from automotive manufacturers for CAN partial networking, a major innovation in power efficiency, to become an industry standard via ISO and AUTOSAR.
At June’s Advances in Automotive Electronics International Congress in Ludwigsburg, Germany, Audi managing E/E director Ricky Hudi appealed to semiconductor suppliers and engineering partners to actively support the rapid introduction of CAN partial networking architectures and solutions.
In current in-vehicle networking architectures, electronic control units (ECUs) are always active and consuming power when the vehicle is in use. This is the case even if the applications they control aren’t continuously required, such as seat positioning, sunroof operation, and window lifting. CAN partial networking enables precision control over a vehicle’s bus communication network.
By intelligently de-activating ECUs when they are not needed, significant reductions in vehicle fuel consumption and CO2 emissions can be achieved without sacrificing performance. CAN partial networking is also extremely beneficial for electric and hybrid vehicles, as it helps extend their operating range and reduce charging time.
NXP’s standalone TJA1145 high-speed CAN transceiver and UJA1168 system basis chip combine analogue circuitry and high-density digital circuits (see the figure). The UJA1168 offers a 5-V/100-mA microcontroller supply. Both support CAN partial networking by enabling “selective wake-up” and “selective sleep” functionality. Also, both chips come with a small footprint based on the HVSON14 package. For backwards compatibility, the TJA1145 is available in the SO14 package.