STMicroelectronics has begun supplying customers in China with its general-purpose STM32 microcontrollers that are manufactured domestically. The initial shipment comes from the first STM32 wafers produced entirely in China by Huahong on behalf of ST. The development represents an important milestone in the company’s global supply chain strategy. ST also plans to expand local production in 2026 to include additional STM32 product lines, such as high-performance, security-focused, and entry-level microcontrollers.
“Bringing STM32 MCUs to mass production in China is a core commitment of ST to its Chinese customers. In collaboration with Huahong, ST is bringing the very same market-leading products to customers with a secure, reliable, and resilient local microcontroller supply chain. ST will continue to respond to the needs of its Chinese customers with greater speed and precision,” said Henry Cao, Executive Vice President, Sales & Marketing, China Region, STMicroelectronics.
Through this collaboration, STMicroelectronics has become the industry’s first global semiconductor company with a dual supply chain, with fully processed and manufactured 40nm MCU products in China that are exact same design and technology as those made outside China. The company has established a fully localized STM32 supply chain, covering all stages from wafer manufacturing to chip packaging and testing.
In front-end wafer manufacturing, ST has strengthened its 15-year partnership with Huahong, leveraging the identical 40 nm embedded non-volatile memory (eNVM) technology and quality control standard as in ST’s global fabs, to ensure seamless compatibility of China-manufactured products with ST’s global quality standards. The packaging and testing are handled by ST’s Shenzhen fab and local semiconductor assembly and test (OSAT) partners.
This manufacturing model offers customers in China a unique dual-supply choice between MCUs manufactured locally and those produced outside China, while maintaining globally consistent quality and compatibility.
Product availability (2026-2027)
| First product with a China for China supply chain | STM32H7 series Mature, high-performance general-purpose series, for industrial systems smart home systems with more advanced graphical displays, personal electronics, and medical applications. Status: mass production has begun for initial product models of the H7 series, with additional product models scheduled to enter mass production by end of 2026. |
| Next products | STM32H5 series Performance-oriented general-purpose series boosts performance and security, with applications including pluggable optics modules in datacenters as well as a broad range of consumer and industrial systems including air conditioners, home appliances, security systems, pumps, lighting, power conversion, PC peripherals, and smartphone accessories. Status: Mass production planned by end of 2026. STM32C5 series Entry-level microcontroller series targeting applications such as industrial automation, home appliances, motor control, digital power, medical, and consumer applications such as gaming and wearables. Status: Mass production planned by end of 2026. |
