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Body electronics MCU with eight CAN ports

Freescale (USA) has announced the Qorivva MPC5748G micro-controller (32 bit) featuring eight CAN on-chip modules. The company also introduced the S12ZVC micro-controller (16 bit) providing one CAN interface. Both product lines are designed for car body electronics.

Qorivva MPC5748G block diagram
"VEHICLES ARE TRANSFORMING INTO SMART CONSUMER DEVICES, where all connections lead to the outside world,” said Ray Cornyn, Freescale’s vice president of automotive micro-controller products. “By bringing increased intelligence to the central communications controller in the vehicle, Freescale understands the importance of not only securing in-vehicle networks, but also reducing electrical and mechanical energy consumption. Our latest MCU offerings will enable OEMs to reduce up to 9 kg of copper wiring and board components, reducing vehicle weight and in turn further improving fuel economy.”
As the number of electronic control units (ECUs) in a vehicle grows, the amount of connectivity needed also increases. The average vehicle includes several miles of copper wire – weighing up to 68 kg or more – for in-vehicle networking. Integrating more functionality within the vehicle’s main ECUs and increasing the intelligence of its satellite nodes (i.e. modules in doors or electric motors) can help reduce the number of ECUs and the amount of associated wiring required, eliminating weight in the vehicle wiring harness and helping improve vehicle fuel economy.
The US chipmaker has extended its Qorivva and S12 MagniV vehicle body network micro-controller (MCU) portfolios to support the development of “greener” and “safer” vehicles. The Qorivva MPC5748G is equipped with seven FlexCAN interfaces, which support the improved CAN protocol (also known as CAN FD). In addition, the MCU provides one FlexCAN port for pretended networking. The chip is also equipped with 18 LIN ports and one Flexray interface. It is intended as a central controller for the body electronics. In this application it acts as the networking gatekeeper with centralized data security, intelligent power management and ASIL support for functional safety. The multi-core controller features USB, Ethernet, and Audio Video Bridging functionality. It comes with 6-MiB flash-memory and 768-KiB RAM. As a central body control module, it will spend significant portions of time in a low-power monitoring state. The MPC5748G features a low-power unit (LPU) mode that allows for increased functionality in a lower-power state, cutting peak-current consumption for cyclic wakeup use cases by nearly 30 percent compared to previous-generation devices. Inclusions of analog comparators that operate out of stand-by mode and pretended networking help to reduce power consumption.
The MCU complies with the ISO 26262 automotive safety standard. Built-in safety functions such as self-testing and end-to-end error correction coding (ECC), comprehensive auto safety software including Autosar OS and MCAL drivers and safety documentation help to achieve ASIL B compliancy. This is required for functions such as exterior lighting and windshield wipers. The chip offers a hardware security module (HSM) for data protection. It ensures secure communication and flash updates through AES cryptographic algorithms, secure memory and secure boot capabilities.

S12 MagniV mixed-signal MCU
The S12 MagniV micro-controllers are suitable for satellite nodes connected via CAN to the gatekeeper. The S12ZVC provide one M-CAN on-chip module plus an integrated CAN transceiver. The 16-bit MCU features 8-KiB to 192-KiB flash-memory and comes in 32-pin to 64-pin packages. They also fulfill the requirements of ISO 26262.
Limited samples of the 32-bit family are expected to be available in the second quarter of this year and general market availability through distribution is anticipated in the second half of 2014. Limited samples of the size-optimized MCUs are expected to be available in the third quarter of this year and general market availability through distribution at the end of 2014.

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