STMicro goes 'China for China'
STMicroelectronics said its STM32 microcontroller production is now in volume via a partnership with Hua Hong, cementing a "China for China" supply chain that localizes manufacturing and reduces cross‑border exposure. That move signals growing localization among chip vendors and potential implications for global distributors and cross‑market sales. (digitimes.com)
Localization of STM32 production begins with the high‑performance STM32H7 family, with performance‑and‑security STM32H5 and a new entry‑level STM32C5 slated for local volume production in 2026. (newsroom.st.com) ST says the China‑made MCUs are being produced using its 40 nm embedded non‑volatile memory (eNVM) technology and the identical design and mask set used outside China, creating what it calls an industry‑first “dual supply chain” for STM32. (newsroom.st.com) Front‑end wafer fabrication for the initiative was transferred to Huahong (HH Grace), with ST moving its 40 nm eNVM CMOS logic process to Huahong as part of the China‑for‑China plan and planned production at Huahong’s 300 mm wafer facility. (eenewseurope.com) ST’s announcement confirms packaging and testing will be handled by ST’s Shenzhen fab together with local OSAT partners, completing an end‑to‑end local supply chain from wafer to finished die for China customers. (newsroom.st.com) Industry data cited by TrendForce puts Huahong as the world’s sixth‑largest foundry by revenue with roughly a 2.5% global share as of 4Q‑2025, underlining the partner’s position among legacy‑node suppliers. (trendforce.com) ST publicly framed the move as growing its China customer base—planning to increase local customers by about 50% over five years—and the transfer followed earlier disclosures in 2024 when ST formalized the 40 nm process handover amid a microcontroller sales downturn and broader restructuring planning. (eenewseurope.com)
