STMicro Launches STM32C5 Series
STMicro's STM32C5 series features Cortex-M33 processors on 40nm technology targeting smart devices, while NXP's i.MX 91 processors with Arm Cortex-A55 focus on IoT and edge applications. At Embedded World 2026, Menta showcased FPGA IP for reconfigurable ASICs/SoCs in industrial applications, and the upgraded FGH200M Wi-Fi HaLow module now supports 8,191 IoT devices.
STMicroelectronics is aggressively targeting the entry-level market with the STM32C5, offering prices as low as $0.64 in 10,000-unit orders. The use of a 40nm process is key, as it is a mature and cost-efficient technology that still allows for higher clock speeds and flash memory up to 1Mbyte, which is often uncompetitive on less dense process nodes. The STM32C5's Cortex-M33 core delivers up to three times the performance of the Cortex-M0+ often found in this price bracket. This performance uplift accelerates computations like digital filters for sensor conditioning and noise suppression, enabling more sophisticated features in devices like smart thermostats, electronic locks, and industrial sensors without a cost penalty. NXP's i.MX 91 family utilizes a more powerful Arm Cortex-A55 core, a successor to the widely used Cortex-A53, offering up to 18% increased performance and 15% better power efficiency. This positions it for higher-level applications that require a full operating system like Linux, such as smart home controllers, EV chargers, and industrial gateways. Unlike the microcontroller-focused STM32, the i.MX 91 is an application processor, designed to run complex software stacks. It features the EdgeLock Secure Enclave for security features like secure boot and tamper detection, and supports modern LPDDR4 memory, dual Gigabit Ethernet, and dual USB ports for robust connectivity. Menta's technology provides embedded FPGA (eFPGA) intellectual property, which allows chip designers to integrate a block of reconfigurable logic directly into an ASIC or SoC. This provides "design insurance," enabling hardware updates, bug fixes, or adaptation to new standards after the chip has been manufactured, a critical advantage for products with long lifecycles. The key benefit of integrating eFPGA is avoiding the high non-recurring engineering costs and long development times associated with creating a new ASIC for every product variant. Menta's IP is unique as it's built from 100% standard cells, allowing it to be ported to any foundry or process node, including radiation-hardened ones for aerospace applications. The FGH200M module is based on the Wi-Fi HaLow standard (IEEE 802.11ah), which operates in the sub-1 GHz spectrum (850-950 MHz). This unlicensed band allows its signals to travel up to a kilometer and better penetrate walls and obstacles, a significant advantage over traditional 2.4 GHz and 5 GHz Wi-Fi. An upgrade to the prior FGH100M, the new module is built on a Morse Micro MM8108 SoC. While its maximum data rate is 43.3 Mbps, the HaLow standard's primary strength is its capacity, allowing a single access point to connect with a theoretical maximum of 8,191 devices, making it ideal for large-scale sensor networks in smart agriculture, warehouses, and smart cities.
