As the number one supplier of vehicle control microcontrollers and SoC products for the automotive industry, Renesas is focused on helping our customers realize their vision for the future of the automobile. With billions of SoCs and MCUs supplied to our global customers, Renesas is also a proven partner, true to our policy of “Quality First.” Our technologies address the latest trends in fuel economy, engine efficiency, driver assist systems, body control, infotainment, connectivity, security and reliability. Popular families and series are RH850 MCUs, application designs with R-Car SoC’s, or, the RL78 MCU series used in industrial and automotive applications.


The RH850 is Renesas Electronics’ latest automotive micro-controller family that offers high performance balanced with very low power consumption over a wide and scalable range of products. This family offers rich functional safety and embedded security features needed for new and advanced automotive applications.

The RH850 family is offered in a Renesas 40nm process, an industry first, and offers tremendous capability and features as cost-effective pricing. The family offers a range of CPU core structures (single, multiple, lock-step and combination thereof) to support high performance and/or high reliability requirements.

ProMik tools like the MSP family, can use the CSI interface for high speed flashing, in specific cases it is possible to program the memory via the JTAG debug interface, too.


RL78 microcontrollers greatly improve power efficiency with industry-leading low power consumption at 45.5 μA/MHz consumption during normal operation and 0.57 μA/MHz during clock operation.

Built-in features such as a high-precision (±1%) high-speed on-chip oscillator, background operation data flash capable of 1 million rewrites, temperature sensor, and interface ports for multiple power supplies help reduce system costs and size.

R-Car Gen 3

Cars have come to be called “drivable computers.” Countless LAN-connected MCUs acquire data from actuators and sensors, and perform optimal processing to create earth-friendly cars. Advanced navigation systems not only make driving more pleasant; they also provide safety with danger avoidance systems using video recognition. We support continually evolving car electronics with the latest technologies and reliability.

As an automotive computing platform for the autonomous-driving era, the R-Car H3 provides cognitive computing capabilities and an enhanced computing performance that can process large volumes of information from vehicle sensors accurately in real-time, making it ideal for driving safety support systems. The R-Car H3 enables system manufacturers to run applications that require complex processing, such as obstacle detection, driver status recognition, hazard prediction, and hazard avoidance. To further accelerate the driving safety support systems, the R-Car H3 also conforms to the ISO 26262 (ASIL-B) functionality safety for automotive. ProMik can offer Renesas customers unique flash programming solutions, from customized bootloaders to integrating cyber security features.

Renesas Application

Requisites for high performance Flashing

Initial programming of eMMC:

  • Loading ProMik bootloader into R-CAR M3 RAM
  • Flashing data into eMMC by use of ProMik bootloader in R-CAR M3
  • Communication speed via SWD up to 1,5Mbit/sec at 1,5m cable length

Initial programming of RH850:

  • Flashing data into RH850 internal memory via CSI interface
  • Communication speed up to 0,32MB/sec

Reprogramming of eMMC:

  • Loading data temporarily into internal RAM of R-CAR M3 via BroadR-Reach
  • Flashing Data in eMMC by use of initially downloaded ProMik bootloader
  • ProMik Bootloader erases itself

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