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STMicroelectronics announces STM32C5 entry-level microcontrollers utilizing 40nm process technology
Friday, March 6, 2026 at 08:40 AM
STMicroelectronics has introduced the STM32C5 series, an entry-level microcontroller based on the Arm Cortex-M33 core. This new family of MCUs is manufactured using a 40nm process technology, representing a shift in the production roadmap for its general-purpose microcontroller segment.
Context
On March 5, 2026, STMicroelectronics (STM) announced the launch of the STM32C5 series, a new generation of entry-level microcontrollers designed to bridge the gap between high performance and cost-sensitive applications. Leveraging a proprietary 40nm process technology, these MCUs feature an Arm Cortex-M33 core running at 144 MHz. The series is positioned to provide up to three times the performance of competing Cortex-M0 based devices while maintaining a highly aggressive price point of under $1 per unit.
This release is a strategic move to dominate the high-volume smart device market, including industrial sensors, wearables, and home automation. By offering up to 1 MB of flash memory and integrated security features usually reserved for higher-tier chips, STMicroelectronics aims to capture demand for more sophisticated edge processing in budget-constrained hardware. To support global and regional supply chain resilience, the company previously signaled that production of these 40nm MCUs would also be bolstered through partnerships, including a strategic manufacturing agreement with Hua Hong Semiconductor slated for late 2025.
Sources (5)
STM32C5 series - STMicroelectronicsSTMicroelectronics’ new STM32 series redefines entry-level microcontroller performance and value for smart devices everywhere - ST NewsSTM32C5: This new MCU series challenges what to expect ... - BlogSTMicroelectronics partners with Hua Hong Semiconductor to boost local production in China's EV marketSTMicro MCUs Aim to Redefine Entry-Level Performance - EE Times
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