Recently, Freescale has launched a new Qorivva microcontroller and two S12 MagniV series of the latest end-node devices for automotive electronic systems to meet the network bandwidth and data processing capabilities and data of automotive electronic systems. Increasing requirements for safety, in addition, the working power consumption of the new MCU has also been reduced.
With the increase in the number of electronic control units in the car (more than 100, with more than 10 million lines of code executed), the connectivity between the units also needs to be enhanced. At present, the average copper wire used to carry signals in each car's internal network is several miles long and weighs about 150 pounds (68 kilograms). Integrating more functions on a single ECU chip and improving the intelligence of executing code can effectively reduce the number of ECUs in the automotive electronic system, so that it can save a lot of copper wire layout, reduce the weight of the entire vehicle, and thus improve fuel effectiveness.
Currently, ISO26262 is the standard regulation for the functional safety of body electronic modules, including exterior lighting control and windshield wiper control.
MPC5748G microcontroller execution block diagram
As wireless communication in vehicles becomes more and more common, MCUs must have good security to prevent unauthorized signals and requests to enter the vehicle to infringe the vehicle network.
Qorivva MPC5748G microcontroller and S12 MagniV series S12ZVL / S12ZVC end node equipment adopt information security complementary technology, which can effectively protect the functional signal safety of vehicle electronic system. S12 MagniV satellite node (satellite node) integrates power supply and communication transceiver and is embedded in the intelligent mixed-signal microcontroller.
The high degree of integration of these devices simplifies the design of the vehicle network, reduces the weight of copper wires in the car to 130 pounds, improves the wiring efficiency during vehicle manufacturing, and reduces the circuit board size by 30%.
Qorivva MPC5748G microcontroller
Qorivva MPC5748G is a single-chip microcontroller for next-generation central body control and gateway applications. It combines integration with a low-power management mode to ensure good functional safety and system self-repair capability and stability (robustness) in the event of a failure.
This microcontroller utilizes Power Architecture technology and is equipped with three e200 core processors with a signal conversion frequency of 160 megahertz (MHz), enabling clear tasks in a comprehensive system with integrated body control module (BCM) / gateway Division of labor. MPC5748G micro-controller bridges via Ethernet audio and video; FlexRay vehicle network; Multimedia Local Bus (MLB); USB; provides diverse gateway connections; LAN and other methods to achieve diverse connection methods. It has 18 LIN control buses, 6MB flash storage and 768KB RAM storage, ensuring efficient data transmission and eliminating communication bottlenecks.
The central body control module operates in a low-power unit mode monitoring system most of the time. Compared with the previous generation of micro-control, it reduces unnecessary cyclic wakeup by 30%.
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