New Products

AURIX™ TC39xXX/TC39xXP Microcontrollers

August 30, 2020 by Infineon Technologies

The second-generation AURIX™ is a high-performance chassis, powertrain, connectivity, and autonomous driving microcontroller.

Infineon releases its second-generation AURIX™ microcontroller in embedded flash 40 nm technology. It comes back with an increase in performance, memory sizes, connectivity, and more scalability to address the new automotive trends and challenges.

This family has more than 20 products to provide the most scalable portfolio of safety microcontrollers. In terms of performance, the highest-end product (TC39x) offers 6 cores running at 300 MHz and up to 6.9 MBytes embedded RAM, and consuming below 2 W. Its mirrored embedded flash banks offers A/B swap capabilities.


Block diagram


Safety is the core know-how of Infineon, and all products provide safety mechanisms (including but not limited to lock-step cores, LBIST, ECC RAM) to ensure a safety platform supporting ASIL-D ISO 26262. The TC39x has 4 lock-stepped cores and 2 non-lock-stepped cores, providing up to 2700 DMIPS in ASIL-D and 1300 DMIPS in ASIL-B.

In terms of security, this product has an HSM compliant eVita full, ensuring the implementation of future-proofed security measures. On top of this, it offers extensive connectivity with 12 CAN FD, 4 channels FlexRay, 12 LINs, 6 QSPI, and new high-speed communicating interfaces such as Gbit Ethernet and eMMC, which are critical to addressing new domain control and connected gateway ECUs.

The AURIX™ TC3xx family features a dedicated 8-bit standby mode controller, with its own voltage domain to, not only support low power modes but also to perform certain operations such as analog measurements, CAN, and LIN communications, RTC and basic processing while the rest of microcontroller is in standby.

Finally, to ensure the scalability, the whole family shares its core architecture (TriCore™ based), allowing a maximum of software re-use, but also offers pin compatibility on two main packages (BGA-292 and BGA-516). With this approach, customers can develop on this TC39x for high-end applications and build a complete portfolio ECU with lower end AURIX™ TC3xx products, with optimized go to market and development cost. This product offers as well the capability to be coupled to either an ASIC or another TC39x through a dedicated high-speed interface (HSSL) in order to increase the performances of the ECU. The HSSL is an LVDS based interconnection with low latency and speeds up to 320 Mbit/s.


Key Features

  • 6 TriCore™ running at 300 MHz with 4 additional checker cores delivering 4000 DMIPS
  • 16 MB flash and up to 6.9 MB SRAM
  • 1 Gbit Ethernet and 12 CAN FD
  • 1x eMMC/SDIO
  • ISO 26262 ASIL-D support
  • eVita Full HSM (ECC256 and SHA2)
  • Standby mode controller
  • AUTOSAR 4.2 support
  • 165°C junction temperature 


Key Benefits

  • Best-in-class performance enabling ASIL-D designs
  • Downward scalable to lower cost AURIX™ TC3xx microcontrollers
  • A/B swap software update over the air support
  • Easy migration from AURIX™ first generation thanks to the software and hardware compatibility


Key Applications

  • Domain controllers
  • Sensor fusion and autonomous driving computers
  • Powertrain
  • High end gateways and body domain controllers