The shortage of automotive MCUs has triggered a thought, how to ensure the autonomy and control of the domestic automotive chip supply chain. Especially with the development of automobiles in the direction of electronization and intelligence, as the core of the internal calculation and processing of the automobile electronic system, the automotive MCU is more and more important in dozens of sub-systems such as suspension, airbag, door control and audio. In the past, this market was mostly occupied by foreign manufacturers such as NXP, Renesas Electronics, Microchip, Infineon, ST, etc., and domestic manufacturers had very few shares.

However, this situation is changing, and domestic automotive MCUs are gradually rising. Among them, Xinwang Microelectronics has successfully opened the door to domestic MCUs with more than ten years of experience in R&D, design and market delivery of automotive-grade chips. At the 2021 Shanghai Munich Electronics Show, the popularity of the Xinwang Microelectronics booth was overwhelming, and the popularity was evident.

autonomous kernel

For a long time, most domestic manufacturers in the MCU field have adopted ARM-authorized cores, while Xinwang Micro has "opened a new path" and insisted on independent research and development of MCU cores from the very beginning of the company's establishment. The biggest advantage of the self-developed core is that it can achieve differentiated innovation on the product side, and build a surrounding ecosystem to provide users with better services and value, which is the key to building industry barriers.

Xinwang Micro's self-created KungFu core is designed based on a reduced instruction set, and has become another commercial embedded processor core after ARM, MIPS and RISC-V, with complete independent intellectual property rights and a complete tool chain system. The KungFu kernel family includes KungFu8, KungFu32, digital signal controller kernel KungFu32D, and multi-core system KungFu32DA.

The development road of Xinwang Microelectronics automotive-grade MCU

It is worth mentioning that Xinwang Micro launched the 32-bit core KungFu32 based on the great success of the KungFu8 core, and the main frequency of KungFu32 is as high as 120Mhz; under the advanced process, ESD can reach 8KV (HBM), EFT can reach 4.2KV , belongs to the highest level in 32-bit MCU products; multi-I/O is also a highlight of the new product, [email protected] I/O, [email protected] I/O, the average I/O occupancy rate is as high as 94%, which is The highest ratio among similar products. In terms of security, the whole series of car-grade 32-bit MCUs have Flash/RAM ECC verification; dual watchdogs, clock failure detection and switching, data CRC32 verification unit and AES128 hardware encryption and decryption.

So far, Xinwang Micro has successfully launched KF8F, KF8L, KF8A, KF8TS, KF8S and other 8-bit MCU products and KF32A, KF32F, KF32L, KF32LS and other 32-bit MCU products to the application market. Thanks to the high-performance and high-reliability KungFu core, Xinwangwei's MCU products have entered the supply chain of many Fortune 500 and domestic well-known companies, with a cumulative shipment of more than 700 million units.

In addition to having an independent MCU core and architecture, Xinwang Micro has also developed a series of development tools that can provide independent research and development, including integrated development environments, C compilers and emulators, to achieve full autonomy from chips to tool chains. It is an important part of building its own ecology.

The research and development of domestic MCU cores can save the authorization link and avoid the risk of being banned. This is already the mainstream trend in the current domestic market, and Xinwangwei is undoubtedly the leader of this trend.

Overcome the in-vehicle MCU

According to data from IC Insights, a market research organization, automotive electronics is the downstream application market with the largest and most potential MCU share, accounting for 33% of overall sales. However, from the perspective of the competitive landscape, foreign manufacturers such as NXP and Renesas Electronics are still the "number one players" in this market.

The reason behind this is that there are high technical barriers and supporting resources for automotive-grade MCUs. It is not easy to enter the game, and most domestic manufacturers "shy away from it".

Automotive safety certifications such as IATF 16949 (compliant with zero-failure quality management), AEC-Q100 (compliant with device reliability standards), and ASIL functional safety level (compliant with ISO26262 standard safety) for automotive-grade MCUs have discouraged many domestic manufacturers. Among them, the AEC-Q100 reliability test certification is the key to the reliability certification of automotive-grade MCUs. It has a total of 41 tests in seven groups, and the test process covers the upstream and downstream industries such as Wafer Foundry, Design House and Assembly and Test Factory. These challenges have become a "chasm" that many companies find it difficult to bridge.

The development road of Xinwang Microelectronics automotive-grade MCU

However, Xinwangwei rose to the challenge and made every effort to overcome these challenges. As an early domestic manufacturer of automotive-grade MCUs, Xinwang Micro continuously improves the management and control process of automotive-grade MCUs. From chip design, manufacturing to quality control, every link meets the standards and specifications of automotive electronics. Build a reliability laboratory to ensure the reliability testing process of automotive electronics AEC-Q100, and continuously improve the performance and reliability of automotive-grade MCUs.

Active investment has brought rich returns. In 2009, Xinwang Micro launched the first industrial-grade automotive-grade standard Flash+EEPROM type 8Bit MCU in Greater China; in 2015, it released the second-generation KungFu8 core product; in 2019, it released 17 8-bit MCU, mass-produced 32-bit automotive-grade MCU with KungFu32 core in the same year.

At present, the MCU based on the independent KungFu core of Xinwang Microelectronics has been used in SAIC, Volkswagen, Dongfeng, Geely, BAIC, Shaanxi Automobile, Wuling, Foton and other models took the lead in realizing the import design and mass production application of localized MCU devices.

In addition, with its own architecture and development environment, Xinwang Micro has a great competitive advantage in developing customization and ensuring supply chain security. It can customize development, respond quickly, and avoid the risk of supply interruption or high prices.

In 2020, the company's sales of automotive-grade MCUs exceeded 30 million, and the shipment of 32-bit MCUs has also achieved sales of one million pieces; and the sales of the entire industrial + automotive MCUs exceeded 100 million yuan.

Covering every scene of the car

At present, Xinwangwei's automotive-grade MCU products have achieved a full range of layouts. Xinwangwei has a complete plan for everything from body control to automotive lighting systems, to intelligent cockpits, and then to the drive control system of motor power.

Taking automotive lighting as an example, Xinwang has developed different solutions for different lighting systems. For example, KF8A100GQT can be applied to automotive front combination lamps with its built-in LIN bus communication module, large number of I/Os, support for more LED control, and low sleep power consumption; Many brands of LED drivers have good compatibility and can be used for through-type taillights; in addition, KF8A100FTN can be used in through-type LED taillights.

At present, the smart cockpit is showing the trend of "all human-computer interaction buttons are upgraded to Touch". In this regard, Xinwang Micro has launched a vehicle-grade Touch Key MCU with built-in 4-channel LIN and 2-channel CAN peripherals to adapt to in-vehicle communication nodes. It can help users to better realize the virtual keys of the smart cockpit and form the touch key function. Such as KF32A141, KF32A151 and other products.

In addition, Xinwangwei has also launched corresponding solutions for car wireless charging, car window/sunroof, car fan/water pump control, car TBOX, and car charger.

Among them, the representative model of the car wireless charging solution is KF32A140, its main frequency is 48MHz, the Flash is up to 128KB, and it supports conventional communication interfaces such as CAN, LIN, SPI, and IIC; the KF32A140 series can be used in car windows and sunroofs. LIN CAN peripherals are adapted to in-vehicle communication nodes, 128K large-capacity Flash, and support A/B program upgrades.

Epilogue

"Without the accumulation of silicon, there will be a thousand miles", Xinwangwei insists on developing core technologies to occupy a place in the domestic MCU field. It is worth mentioning that the shortage of automotive chips that began in the third quarter of last year has not been resolved, and MCU has become the "hardest hit area". The research report of China Merchants Bank Research Institute shows that almost all MCU delivery times have increased by two years. more than a month.

Xinwang Micro has always attached great importance to the construction of supply chain partnership, and established long-term cooperation with first-class foundry and packaging and testing factories to achieve symbiosis and co-prosperity. Ensure sufficient production capacity and stable supply. At present, the company's delivery period is 3 to 4 months, maintaining the highest level in the industry.

In the future, Xinwang Micro will always be on the road of self-research and contribute to the establishment of an independent, controllable and safe domestic supply chain.

Responsible editor: tzh

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