For hybrid vehicle (HEVs) and electric vehicle (EVs) system control applications, Renesas has introduced a 32-bit automotive-grade microcontroller, model number RH850/C1x. The RH850/C1x is manufactured using Renesas' advanced 40nm MONOS process, which not only helps embedded engineers enhance system performance, reduce costs, but also improve the safety level of electric vehicle control systems. This model is currently available for order through Shiqiang.
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Rich resource configuration for perfect support for automotive applications
The RH850/C1X of Shiqiang agent adopts CPU RH850G3M, the maximum operating frequency is up to 240MHz, supports internal peripheral protection function (IPG), system error notification function (SEG), memory protection unit (MPU), and the CPU also supports Floating point unit (FPU) with dedicated control register (MEV). The RH850/C1X clock supports the phase-locked loop function, allowing users to flexibly and conveniently select the operating frequency. The DMA inside the microcontroller supports up to 16 channels of data transmission, and the DTS supports up to 128 channels of data transmission to ensure the CPU's working efficiency when the system performs data transmission. The RH850/C1X also integrates a 4-way CAN bus interface to facilitate the microcontroller system to access the CAN bus communication system for perfect support for automotive applications.
Integrated high-capacity internal storage
Hu Qiang, manager of Shiqiang Market, said that the RH850/C1X not only uses an advanced 40nm process, but also integrates embedded Flash based on the Renesas MONOS process. Flash using the MONOS process not only improves data read and write speeds, reduces operating power consumption, but also enables larger capacity storage. The RH850/C1x has an internal Flash memory space ranging from 2MB to 4MB. In addition, 32KB of Flash data storage space can be provided inside the chip. This kind of storage medium can realize the same storage function as EEPROM, which is convenient for developers to develop data storage.
Integrated peripheral function that perfectly supports HEV/EV motor control
Renesas has integrated the company's latest R/D converter chip AU6805 with the RH850/C1X series of chips in the RH850/C1X microcontroller through long-term cooperation with R/D converter chip leader Tamagawa Seiki Co. Ltd. The motor control IP cores EMU2 and TSG3 are also integrated. Based on the functions of the above modules, the RH850/C1X chips can directly implement three motor control modes through hardware, including sine wave PWM control, overmodulation control and square wave control. The RH850/C1X switches between these three control modes according to the current actual working conditions, thereby improving the efficiency of motor control without increasing the software operating pressure.
Optional single motor control or dual motor control
To meet the different system architectures of the user's HEV/EV, Renesas offers two product models: RH850/C1M and RH850/C1H. The RH850/C1M integrates a single R/D converter, primarily for the control of a single motor. The RH850/C1H integrates two R/D converters for control of dual motors. In addition, the RH850/C1H not only provides a wealth of peripheral functions to achieve independent control of the two motor control systems, but also combined with the internal high-performance CPU, in addition to the motor control, energy management control, DC-DC Converter control, battery control and other EUC functions.
Diverse security features support
In order to meet the increasingly strict safety standards of modern cars, the RH850/C1X microcontroller adopts the Lockstep mode in the main CPU, that is, the same processing is performed in the two processors, and the difference in the running results is monitored at the same time, thereby greatly ensuring the system. The correctness of the operation results, while the RH850/C1X also uses the ECC function to verify and correct the stored data. In addition, the ECM function module is integrated inside the microcontroller, which can generate an interrupt or an internal reset signal for the detected error to realize the management of the error. Compared to the use of an external R / D converter, the RH850 / C1X internal integrated R / D converter can better achieve diagnostic monitoring, because the use of internal integrated R / D converter, developers can be faster and more efficient Abnormal operation is detected and the adverse effects of errors are reduced in a timely manner.
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