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Electronics: Infineon, Melexis, Scaleo

Infineon's microcontrollers; Melexis sensor; Scaleo chip microcontroller


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 Infineon’s Rule of Three



Infineon Technologies AG (infineon.com) unveiled a new set of 32-bit multicore microcontrollers for a variety of powertrain and safety applications that’s said to operate at twice the speed of its predecessors. The AURIX multicore architecture engages up to three independent TriCore CPU processor cores running at up to 300 MHz, which the company notes is double that of 90-nm TC1798 technology, which is currently the highest performing automotive microcontroller in the market. 

The new family of microcontrollers is applicable to com-bustion engines, electrical and hybrid vehicles, transmission control units, chassis domains, braking systems, electric power steering systems, airbags, and advanced driver assistance systems. 

For safety applications, the AURIX architecture harnesses up to two TriCore CPUs combined internal communication buses and a distributed memory protection system. This configuration allows integration software from different sources, enabling multiple applications and operating systems.

The range has a wide spectrum of modular components, from 8 megabytes (MB) of embedded Flash (eFlash), 200-MHz triple core devices with 4-MB eFlash, 200-MHz dual core devices with 2.5-MB eFlash, to the lower-level well as 130MHz and 80MHz single core and single core lockstep devices with 1.5MB, 1MB and 0.5MB of eFlash.

The range includes 300-MHz triple-core devices with 8 MB of embedded Flash (eFlash), 200-MHz triple-core devices with 4-MB eFlash, 200-MHz dual-core devices with 2.5-MB eFlash, and 130-MHz and 80-MHz single-core and single-core lockstep devices with 1.5-MB, 1-MB and 0.5-MB of eFlash.


Simpler Sensor


The MLX90364 Triaxis, a linear, angular-position sensor by Melexis (melexis.com) lacks one key attribute: It doesn’t include printed circuit board inside of its sensing modules. The encapsulated, dual mold units can be welded or soldered directly to a rugged connector and over-molded. The sensor integrates a 12-bit resolution position-sensing die with capacitors, aimed at meeting automotive compliance regulations. Its “dedicated ears” improve accuracy levels when mounted, according to Melexis. 

The sensor device can be used in either linear or rotary position sensing applications. It features programmable transfer functionality, selectable analog and pulse width modulation (PWM) output modes, open/short diagnostics, on-board diagnostics, under-voltage detection and over-voltage protection.

The lack of a printed circuit board, i.e. “no PCB”, means fewer components and fewer solder joints, according to Melexis. The dual mold package combined with the Triaxis position center integrated circuits means less vulnerability to high temperature or high vibration. 


Scaleo chip Microcontroller

Scaleo chip’s (scaleochip.com) new microcontroller, the AMEC, is specifically for powertrain electronic control units (ECUs). 
The AMEC parallel signal processing unit has been designed to cover Euro 7 and CAFE powertrain require-ments. It combines a Flexible Logic Unit (FLU) and a powertrain-ready peripherals set (PrP). This structure disengages the microcontroller CPU from signal processing tasking, reducing the response time and freeing up more processing power. AMEC flexibility allows the control of a wide range of current and upcoming powertrain systems and extends the life cycle of ECU platforms with support of yet-to-come sensors, actuators or signal processing algorithms.
The system is engineered to simplify ECU designs and save costs. Says Pascal Jullien, Scaleo chip vice president-Advanced Technology. “By considering the design of our microcontroller at the ECU system level, we provide a solution that enables highly integrated, efficient and flexible powertrain ECU platforms.” 




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