Microcontroller family drives automated driving and EVs

Automated cars and EVs can benefit from real-time performance, three times higher than previously available, claims Infineon Technolgies, as it launches its Aurix microcontroller family.

The TC3xx microcontrollers are claimed to offer the highest level of integration on the market and real-time performance. The microcontroller is based on a hexa-core architecture, with features for connectivity, security and embedded safety.

Automotive system suppliers can reduce development costs by 20 per cent, says the company. More functions can now be implemented on a single microcontroller, such as powertrain and chassis domain control and next generation radar and fusion algorithms.

The AURIX TC3xx microcontrollers are suited to safety-critical applications ranging from airbag, braking and power steering to sensor-based systems using radar or camera technologies. They can be used for domain control and data fusion applications supporting the next levels towards automated driving.

The family offers flash memory sizes of up to 16Mbyte and more than 6Mbyte of integrated RAM. Compared to today’s AURIX TC2xx microcontrollers with up to three TriCore cores, the TC3xx multi-core architecture provides up to six TriCore cores, each with a full clock frequency of 300MHz. Four of the cores feature an additional lockstep core, enabling a new level of ISO 26262 functional safe computational power on a single integrated device. Up to 2400 DMIPS performance supporting applications classified ASIL-D, compared to up to 740 DMIPS with the previous AURIX architecture.

They will feature a radar processing sub-system with up to two dedicated signal processing units running at 300MHz, enabling computation of next-generation radar algorithms on a single chip. Radar chips can be seamlessly connected to AURIX via a high-speed digital radar interface.

A new version of the programmable Hardware Security Module (HSM) is available across the family. It supports secure on-board communications and prevents hardware manipulation, such as motor tuning. New asymmetric cryptography accelerators are integrated to achieve full EVITA support. Software-over-the-air updates protect against software hijacking.

As a host controller in gateway and telematics applications, the microcontrollers have a Gigabit Ethernet interface, up to 12 CAN-FD channels compliant to ISO11898-1 and up to 24 LIN channels. An additional eMMC interface for external flash interfacing enables local data storage supporting software-over-the-air update concepts.

Engineering samples of the 300MHz lead device, the TC39xx, with 16Mbyte of embedded flash will be available in BGA-516 package and BGA-292. General sampling is scheduled to start in the first quarter of 2017.



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